Sample SRS
Contents
1. 3 5 10 1 1 High NF Development Team US Maximum allowed execution time for Signlator is 5 seconds starting when the user requests a sign translation and ending when the audio visual output has been transmitted 3 6 10 1 1 Low NF Development Team U6 Maximum time to perform data synchronization is 10 minutes 3 6 10 3 1 High NF Development Team U6 Security protocols must be implemented to ensure that malicious programming Software Requirements Specification for nTravel Page 31 cannot pass from the computer to the device 3 7 10 1 1 High NF Development U7 Maximum allowed Team execution time for a language database change is 20 seconds 3 8 10 1 1 Medium NF Development U8 Maximum allowed Team execution time for file synchronization is 1 second per 20 MB of files being transferred Software Requirements Specification for nTravel Page 32 Appendix A Glossary SD Secure Digital A widely available format for flash memory cards USB Universal Serial Bus A serial bus standard that is used in many computer peripherals and other electronic devices2. 3 8 5 2 Alternative Flow At step 3 8 5 1 3 the user indicates lack of desire to synchronize nTravel related files 3 8 5 2 1 User disconnects device from computer 3 8 5 3 Exception Flow At step 3 8 5 1 1 user s computer is unable to identify the nTravel as being connected 3 8 5 3 1 Error message UNKNOWN DEVICE is displayed suggesting that user check nTravel software installation on computer 3 8 5 6 Includes None Software Requirements Specification for nTravel Page 23 3 8 7 Requirements 3 6 7 1 The system shall communicate via USB 2 0 using the drivers installed on the user s computer 3 6 7 5 The system shall indicate when the nTravel device is unrecognizable by the user s computer 3 8 7 1 The system shall query the user regarding desire to synchronize image and note files 3 8 7 2 The system shall transfer image and note files from the nTravel to the user s computer using USB 2 0 3 8 8 Preconditions User has installed nTravel software on user s computer 3 8 9 Post conditions User s computer has updated files stored 3 8 10 Nonfunctional requirements 3 8 10 1 Performance Requirements 3 8 10 1 1 Maximum allowed execution time for file synchronization is 1 second per 20 MB of files being transferred 3 8 10 2 Safety Requirements None 3 8 10 3 Security Requirements None 3 8 10 4 Software Quality Requirements None 3 8 11 Notes Issues None 3 8 12 Special
3. Software Requirements Specification for nTravel Version 1 1 approved Prepared by NAMMPSoft Inc 11 1 2007 Copyright O 2002 by Karl E Wiegers Permission is granted to use modify and distribute this document Software Requirements Specification for nTravel Page ii Table of Contents dg o NO AAA O Revision Hi ii EVISION HIStOLY cccscssssssssssssssssssscsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssseees II 1 INTrOdUCHON cie aL VD Purpose iii a ria 1 1 2 Document Conventions ene e ereo a N EET e E ea O ET O E ETO E Ee AEE ERE Ere 1 1 3 Intended Audience and Reading Suggestions cccccsccssscesscesseeeeesseceseceseeeseeeeeeeeeeseeneenseeeseees 1 LA Project Scope denena en e a a ea T E G E EEE a E EE 2 EA O a ar a a 2 Overall Descripti tss siisssrsssresossosestesassrsiossstesossissesss sebes so nine acia DR cenar rita 21 NS A O ER 2 27 MAA E O ON NTE 2 3 User Classes and Characteristics 2 4 Operating Environment oui css caian age ene E i A e T e eaei saa EE Ea ieas 2 5 Design and Implementation Constraints cccccscesseesscesseseceesseeeseeeseenseceseeeseeeeecnseceseceeeeereensensaes 6 2 6 User Documentation idad is 6 2 7 Assumptions and Dependencies ccccecccessecsseesseesssceseeesceeseeescecseeceaecesecsseecseecnaeensessseseaeenseeenesaes 6 3 System PH CAGUT CS oii ITA PAKS a PIC A A 6 Saye a Pic a ne Mao 8 Translate Written Lan
4. the device It would help anyone understand the foreign sign in his or her device The camera in the nTravel will take a picture of the foreign sign and returns an explanation of the sign 3 5 2 Priority This requirement is medium priority 3 5 3 Source The source of this use case is the customer 3 5 4 Actors The only actor in this part is the customer 3 5 5 Flow of Events 3 5 5 1 Basic Flow 3 5 5 1 2 The chosen sign is selected from a permanently saved or temporarily saved picture 3 5 5 1 3 The language and symbol is identified 3 5 5 1 4 Then it is compared to the downloaded database in our device 3 5 5 1 5 It is then interpreted in the desired language 3 5 5 1 6 Final result will either be displayed on the screen or will be output through the speaker depending on the user s choice of output 3 5 5 2 Alternative flow At step 3 5 5 1 2 the device does not recognize the language due to incorrect input 3 5 5 2 1 The device beeps and the message INVALID INPUT is displayed on the screen Software Requirements Specification for nTravel Page 16 3 5 5 3 Exception Flow At step 3 5 5 1 4 the device cannot find a translation in the database 3 5 5 3 1 The device beeps and the message NOT TRANSLATED is displayed on the screen 3 5 6 Includes Taking a picture of the sign comparing to database displaying interpretation 3 5 7 Requirements 3 5 7 1 The system shall identify a sign in an existing picture 3 5 7 2 The sys
5. Requirements None Software Requirements Specification for nTravel Page 24 4 External Interface Requirements 4 1 User Interfaces The nTravel s user interface has been specifically designed with their customers in mind giving them convenience while they travel The nTravel makes sure at every point that the customer spends most of the time using the device rather then figuring out how to use it The home screen offers a menu with a list of functions that the device performs The user can select one of the options on the menu and is taken to the respective screen Every screen displays the menu on the bottom The user can click on any one of the options and is taken to the screen of their choice In addition clicking on the power button displays the home screen with the menu options The device offers easy scroll options to navigate the screens efficiently To scroll down any screen simply touch the scroll bar on the screen and roll down If the user does not know how to use any functionality or has any queries the help option can be used The help screen contains a text field to enter search terms A list of search results pertaining to the query is displayed 4 2 Hardware Interfaces The nTravel contains a USB 2 0 port to connect to the user computer and download software updates It can also be used to transfer images from the device to the user s computer and vice versa The device also contains a SD card slot for extra sto
6. The device will be ready to translate after the input and output languages are selected 3 7 10 Nonfunctional requirements 3 7 10 1 Performance Requirements 3 7 10 1 1 Maximum allowed execution time for a language database change is 20 seconds 3 7 10 2 Safety Requirements None 3 7 10 3 Security Requirements None 3 7 10 4 Software Quality Requirements None 3 7 11 Notes Issues None 3 7 12 Special Requirements None 3 8 Use case name and identifier Synchronize Files U8 3 8 1 Objective The customer can connect the nTravel device to a personal computer to transfer saved pictures and notes 3 8 2 Priority This requirement is low priority 3 8 3 Source The source of this requirement is the customer 3 8 4 Actors Customer Customer s Computer 3 8 5 Flow of Events Software Requirements Specification for nTravel Page 22 3 8 5 1 Basic Flow 3 8 5 1 1 User connects the device to the computer using a USB cable 3 8 5 1 2 User s computer identifies the nTravel as being connected 3 8 5 1 3 nTravel software on user s computer queries the user for desire to synchronize nTravel related files pictures and notes 3 8 5 1 4 User indicates desire to synchronize nTravel related files such that the files on the computer will be updated with the files currently on the nTravel 3 8 5 1 5 Files on nTravel are copied to directory specified by user 3 8 5 1 6 User disconnects device from computer
7. anguage is unfamiliar 2 Accepts typed in text translates to foreign language and displays translated text or audio output of corresponding text This functionality is useful when the user wishes to translate a word from a known language to a foreign language For example somebody attempting to order soup at a restaurant could type in soup and then hear how to say the word for soup in the foreign language 3 Accepts voice input from a microphone performs recognition using a speech recognizer translation using a machine translator and generation of the translated audio output using a speech synthesizer This is useful when attempting to understand foreign radio stations or television stations or when attempting to converse with a speaker of the foreign language 4 Provides interpretation of common road signs The device s rapid translation algorithm provides a near immediate translation of road signs to ensure safe transit 5 Synchronizes to a computer to obtain databases previously downloaded from a web application developed by the company using a password protected secure login The company will frequently update the database with new language research ensuring that the customer will be have access to the most accurate language data 6 Stores pictures in either a removable SD card or internal memory 2 GB The device can then either have the SD card removed or be attached to a computer via USB 2 0 to transfer the image
8. e displaying translated text 3 3 7 Requirements 3 3 7 1 The system shall receive text input from the user 3 3 7 2 The system shall identify the language of the text entered 3 3 7 3 The system shall compare the input to the database 3 3 7 4 The system shall translate the text into the desired language 3 3 7 5 The system shall output the translated text Software Requirements Specification for nTravel Page 12 3 3 7 6 The system shall indicate when a translation cannot be found 3 3 7 7 The system shall indicate when the text s language cannot be identified 3 3 8 Preconditions The user has already typed in the text 3 3 9 Post conditions The text has been translated into the desired language and the final output has reached the user in the desired form The user understands the foreign text 3 3 10 Nonfunctional requirements 3 3 10 1 Performance Requirements 3 3 10 1 1 Maximum allowed execution time for U3 use case is 5 seconds for every 30 words being processed 3 3 10 2 Safety Requirements None 3 3 10 3 Security Requirements None 3 3 10 4 Software Quality Requirements None 3 3 11 Notes Issues None 3 3 12 Special Requirements The database needs to be updated frequently by the user by connecting the device to any computer and looking for updates There should be fast processing also 3 4 Use case name and identifier Translate spoken language U4 3 4 1 Objective The object of the U4 use case is to translate an
9. e Requirements Specification for nTravel Page 7 3 1 2 Priority This requirement is medium priority 3 1 3 Source The source of this use case is the customer 3 1 4 Actors An end user of the device a customer would be the relevant actor for this use case 3 1 5 Flow of events 3 1 5 1 Basic Flow 3 1 5 1 2 User enters picture taking mode 3 1 5 1 3 Device displays what it is looking at on screen 3 1 5 1 4 User presses button for taking picture 3 1 5 1 5 Picture is stored in temporary memory and displayed on screen 3 1 5 2 Alternative Flow At step 3 1 5 1 4 the user decides not to take a picture 3 1 5 2 1 User presses cancel button 3 1 5 2 2 Device exits picture taking mode 3 1 5 3 Exception Flow At step 3 1 5 1 4 the device encounters a problem 3 1 5 3 1 Device provides error message indicating need for repair 3 1 5 3 2 Device exits picture taking mode 3 1 6 Includes None 3 1 7 Requirements 3 1 7 1 The system shall provide the option to take a picture 3 1 7 2 The system shall display the currently viewed image 3 1 7 3 The system shall store the image in temporary memory 3 1 7 4 The system shall indicate a need for repair if broken Software Requirements Specification for nTravel Page 8 3 1 8 Preconditions User is logged in optical hardware is operational 3 1 9 Post conditions An image is shown on the device s screen available for permanent saving or deletion 3 1 10 Nonfunctional requir
10. ements 3 1 10 1 Performance Requirements 3 1 10 1 1 Maximum allowed execution time for Ul use case is 3 seconds starting at the time when the user presses the take picture button and ending when the image has been saved and displayed 3 1 10 2 Safety Requirements None 3 1 10 3 Security Requirements None 3 1 10 4 Software Quality Requirements None 3 1 11 Notes Issues Ul is often followed by the U2 use case 3 1 12 Special requirements Always keep enough memory available so that the current picture can be temporarily saved in case the user decides to permanently save it 3 2 Use case name and identifier Save a picture U2 3 2 1 Objective The purpose of the U2 use case is to enable the user to permanently store images captured during the Ul use case on the device s internal memory 3 2 2 Priority This requirement is low priority 3 2 3 Source The source of this use case is the customer 3 2 4 Actors An end user of the device a customer would be the relevant actor for this use case 3 2 5 Flow of events Software Requirements Specification for nTravel Page 9 3 2 5 1 Basic flow 3 2 5 1 1 User is queried as to whether to save current picture 3 2 5 1 2 User presses save button to indicate desire to save picture 3 2 5 1 3 Picture is saved to device s internal memory 3 2 5 2 Alternative flow At step 3 2 5 1 2 the user decides not to save the picture 3 2 5 2 1 User presses the cance
11. end user of the device a customer would be the relevant actor for this use case 3 7 5 Flow of Events 3 7 5 1 Basic Flow Software Requirements Specification for nTravel Page 20 3 7 5 1 1 The user sets the input language and the system gets ready to store the input 3 7 5 1 2 The user sets the language in which the translation is needed and the system retrieves the corresponding database 3 7 5 2 Alternative Flow At step 3 7 5 1 1 the user does not find the required language 3 7 5 2 1 Device s language settings remain in current state 3 7 5 3 Exception Flow At step 3 7 5 1 1 the language database information on nTravel device is corrupted and cannot be read 3 7 5 3 1 Device displays a message indicating error in language database and a suggestion to download the language database again 3 7 6 Includes Update device software U6 3 7 7 Requirements 3 7 7 1 The system shall allow the user to select input language 3 7 7 2 The system shall allow the user to select output language 3 7 7 3 The system shall check the updated database to find required language 3 7 7 4 The system shall get ready to translate via chosen output 3 7 7 5 The system shall indicate when a database file is corrupt and cannot be read Software Requirements Specification for nTravel Page 21 3 7 8 Preconditions User must download the language database to the device before selection 3 7 9 Post conditions
12. files Software Requirements Specification for nTravel Page 5 2 3 User Classes and Characteristics 2 3 1 Customer Remote customers most frequently use the device for language translation and sign interpretation purposes The customers are not expected to have a high educational and proficiency level or technical expertise Hence the user interfaces in available in eight popular international languages such as English French German Spanish Mandarin Japanese Arabic and Hindi 2 3 2 DBA The DBA is expected to have a field appropriate college degree and experience of at least 2 years as a DBA and an additional 5 years in the IT field He She has the privilege to update information in the database and technical expertise in database management The DBA does not directly interact with the nTravel device 2 3 3 Data Entry Level Personnel They must have at least a high school diploma or equivalent certification They do not have privileges to directly access or modify the database without the permission of the DBA The Data Entry Level Personnel do not directly interact with the nTravel device 2 4 Operating Environment The software will operate with the following software components and applications The software being developed will be running under MontaVista Mobilinux v5 0 embedded operating system The hardware that will be running these programs is being developed for this specific project and will follow the specifications that a
13. guage ese esecsecseecsseesseesseeceeeeecseecsaecaeeeseesseecaeceecseceseseseenseessaeenss 10 Translate Spoken Language iii tele E Ea aT NEE 12 Translate Signs tie a o A dd E O E Sa a eE E EENS 15 Update Device SOL Ware she cscssiesisivecelsdecsseetsguStehadaceventstuaded EAEAN ENEAN 17 Set Lan Suase cuina e a cine caian EA AE Ee AE acute von cadavesa oehneoasauaedasaves oven ative Synchronize Files External Interface Requirements sdscscccceseisiesssesseasvcdsssecucasnecansderetsvousveesuadssunteseetecsecussoecwwass ZA Ast User Interact doi ia dada suse A 24 4 2 Hardware IntertaCes a ta ittads 24 4 3 Software Interfaces 00 cccccesssssssccccccessssssssssseccesessssseesscccesseeesssssseceeeeesssssssseecceseeessssseseseeeeeeees 25 4 4 Communications Interfaces cccccccccccessssssscscccccesessssssscceceseessssesscececseessssssceceeeesesstssssececeeeeens 25 5 Other Nonfunctional Requirements e sssoossoesssesssosesoesssosssoesssosssoessoesssosssoesssosesoesssossssees ZO AAA A A 20 7 System Requirements Char oi naar CeO Appendix A Glossary onnan dastsuansenuaeestavasececbassoocouassesuaaecemaGeatsaen 2 Appendix Bs Analysis WIOGEIS A A OS Appendix C Issues Distinciones dO 3 oanu Revision History lt lt Person s 10 04 07 Initial Version 1 0 name gt gt lt lt Person s 10 18 07 Functional Nonfunctional Requirements and 1 1 name gt gt others errors Software Requirements Specificati
14. ion 3 System Features Each feature has its requirements listed alongside the feature information There are no additional Non Functional Requirements Software Requirements Specification for nTravel Page 26 6 Other Requirements For information regarding functional requirements refer to section 3 System Features Each feature has its requirements listed alongside the feature information Special requirements for each system feature are also mention in section 3 There are no additional Functional requirements 7 System Requirements Chart Fleck Description column should be wider and some other columns narrower to make it look better ID Priority Type Source Used in Description NF Nonfunctional Use F Functional Case s 3 1 7 1 Medium F Customer Ul The system shall John Doe provide the option to take a picture 3 1 7 2 Medium F Customer Ul The system shall John Doe display the currently viewed image 3 1 7 3 Medium F Customer Ul The system shall John Doe store the image in temporary memory 3 1 7 4 Medium F Customer Ul The system shall John Doe indicate a need for repair if broken 3 2 7 1 Low F Customer U2 The system shall John Doe ask the user whether to save a picture AA Low F Customer U2 The system shall John Doe store the picture in internal memory 3 2 7 3 Low F Customer U2 The system shall John Doe notify the user if insufficient Software Requirement
15. l button to indicate desire to not save picture 3 2 5 2 2 The current picture is not saved to the device s internal memory 3 2 5 2 3 The device goes back to picture taking mode 3 2 5 3 Exception flow At step 3 2 5 1 2 the device encounters problem due to insufficient memory 3 2 5 3 1 Device provides error message indicating insufficient memory remaining 3 2 5 3 2 Device prompts user to go to file management mode to make memory available 3 2 6 Includes None 3 2 7 Requirements 3 2 7 1 The system shall ask the user whether to save a picture 3 2 7 2 The system shall store the picture in internal memory 3 2 7 3 The system shall notify the user 1f insufficient memory to store the picture remains Software Requirements Specification for nTravel Page 10 3 2 8 Preconditions User has taken a picture in Ul use case sufficient memory is available to store a picture 3 2 9 Post conditions Picture is saved to device s internal memory 3 2 10 Nonfunctional Requirements 3 2 10 1 Performance Requirements 3 2 10 1 1 Maximum allowed execution time for U2 use case is 3 seconds starting when user presses the save button and ending when the picture has been saved in memory and the user has been notified of this event 3 2 10 2 Safety Requirements None 3 2 10 3 Security Requirements None 3 2 10 4 Software Quality Requirements None 3 2 11 Notes Issues Check on use case identifier for removing pictures from memo
16. o select input language 3 7 7 2 High F Customer U7 The system shall John Doe allow the user to select output language 3 7 7 3 High F Customer U7 The system shall John Doe check the updated database to find required language 3 7 7 4 High F Customer U7 The system shall John Doe get ready to translate via chosen output 3 7 7 5 High F Customer U7 The system shall John Doe indicate when a database file is corrupt and cannot be read 3 8 7 1 Low F Customer U8 The system shall John Doe query the user regarding desire to synchronize image and note files 3 8 7 2 Low F Customer U8 The system shall John Doe transfer image and note files from the nTravel to the user s computer using USB 2 0 3 1 10 1 1 Medium NF Development U1 The system shall Team Software Requirements Specification for nTravel Page 30 3 2 10 1 1 3 3 10 1 1 Medium High NF NF Development Team Development Team U2 U3 Maximum allowed execution time for PictureSaver is 3 seconds starting when user presses the save button and ending when the picture has been saved in memory and the user has been notified of this event Maximum allowed execution time for Textlator is 5 seconds for every 30 words being processed 3 4 10 1 1 High NF Development Team U4 Maximum allowed execution time for Speechlator is 5 seconds for every 30 words being processed
17. on for nTravel Page 1 1 Introduction 1 1 Purpose The product we have is the Universal Translator nTravel revision or release number being 1 0 1 1 1 Vision Statement The aim of this product is to create a device that will remove barriers to global communication Many people ranging from tourists to relief workers will be able to use this device to facilitate their international activities 1 1 2 Scope The scope of this project includes the development of visual and audio translation algorithms user interface software for the nTravel device and maintenance of a database containing global language information The algorithms work with the information in the language database to allow the user of the nTravel to translate written or spoken language 1 2 Document Conventions This document follows MLA Format Bold faced text has been used to emphasize section and sub section headings Highlighting is to point out words in the glossary and italicized text is used to label and recognize diagrams 1 3 Intended Audience and Reading Suggestions This document is to be read by the development team the project managers marketing staff testers and documentation writers Our stakeholders company manufacturing associated Software Requirements Specification for nTravel Page 2 hardware company providing embedded operating system shareholders of NAMMPSoft Inc and distributors who markets the finished product may review the document to lea
18. pdate is required 3 6 7 3 The system shall allow software updates to be transferred to it via USB 2 0 from the user s computer 3 6 7 4 The system shall indicate when no software updates are available 3 6 7 5 The system shall indicate when the nTravel device is unrecognizable by the user s computer 3 6 8 Preconditions Update software given with the device should be installed on the computer Software Requirements Specification for nTravel Page 19 3 6 9 Post conditions Updates are installed on the device 3 6 10 Nonfunctional requirements 3 6 10 1 Performance Requirements 3 6 10 1 1 Maximum time to perform data synchronization is 10 minutes 3 6 10 2 Safety Requirements None 3 6 10 3 Security Requirements None 3 6 10 3 1 Security protocols must be implemented to ensure that malicious programming cannot pass from the computer to the device 3 6 10 4 Software Quality Requirements None 3 6 11 Notes Issues For optimal performance device s database should be updated at least once per month 3 6 12 Special Requirements The computer should have an Internet facility available to install updates 3 7 Use case name and identifier Set Language U7 3 7 1 Objective The customer can set the text audio input language and language to which the text audio input is to be converted 3 7 2 Priority This requirement is high priority 3 7 3 Source The source of this requirement is the customer 3 7 4 Actors An
19. ppear in this document in section 3 The synchronization procedures will be written to interface with Windows XP Windows Vista and Mac OS Software Requirements Specification for nTravel Page 6 2 5 Design and Implementation Constraints 1 Synchronization uses USB 2 0 connects only to Windows XP Windows Vista and Mac OS X 2 Memory device will have 2GB internal hard drive Software and database cannot exceed this amount Device will have a SD card slot and the software must be able to read and write to that slot 3 Language requirements software must be multilingual including the following languages English French German Spanish Mandarin Japanese Arabic and Hindi 2 6 User Documentation For user documentation and information please consult section 4 External Interface Requirements and attached user manual 2 7 Assumptions and Dependencies It is assumed that the hardware designed will work correctly with the third party operating system MontaVista Mobilinux v5 0 and the developed software Because the device acquires database updates through USB2 0 the customer must have a computer with a USB2 0 port and have a USB2 0 cable 3 System Features 3 1 Use case name and identifier Take a picture U1 3 1 1 Objective The purpose of the U1 use case is to use the device s optical hardware to produce the image detected by the optical hardware This image is displayed on the device s screen Softwar
20. rage Software Requirements Specification for nTravel Page 25 4 3 Software Interfaces The nTravel software runs on MontaVista MobiLinux v5 0 embedded operating system The OS is altered specifically to the meet needs of nTravel The nTravel features revolutionary touch screen software that makes it convenient to use The nTravel also offers a touch screen QWERTY keyboard that helps users type text to translate into different languages The nTravel uses synchronization software that is compatible with Windows Linux amp Mac operating systems The device contains an in built language database containing image text and audio files The database can be updated with additional languages by downloading them on the user s computer and synchronizing them to the device 4 4 Communications Interfaces User s can connect their device to their computer s using a USB 2 0 cable Once connected to the computer user s can easily transfer images text files and the other files between the device and computer User s can easily update their nTravel device software when connected to the computer User s can download updates from nTravel s website at anytime using secured login and password provided to them Whenever the user connects the device to the computer the device updates itself The update should not take any longer then 10 minutes 5 Other Nonfunctional Requirements For information regarding nonfunctional requirements refer to sect
21. rn about the project and to understand the requirements The SRS has been organized approximately in order of increasing specificity The developers and project managers need to become intimately familiar with the SRS Others involved need to review the document as such Overall Description Marketing staff have to become accustomed to the various product features in order to effectively advertise the product System features Testers need an understanding of the system features to develop meaningful test cases and give useful feedback to the developers External Interface Requirements The hardware developers need to know the requirements of the device they need to build The marketing staff also needs to understand the external interface requirements to sell the product by describing the user friendly features of the nTravel Nonfunctional and Functional Requirements The hardware developers 1 4 Project Scope The nTravel has features that enable any one person to communicate with anyone whether they speak the same language or not It also lets people be more familiar with their surroundings if they are in a foreign place Refer to the project scope document for further information Software Requirements Specification for nTravel Page 3 1 5 References Please consult the attached project scope document for further information regarding project scope A use case diagram has been attached to accompany sections 2 1 Product Pe
22. rspective and 2 2 Product Features A user manual is included to accompany section 2 6 User Documentation Product mock ups and Requirements Validation Plan have also been included for general reference 2 Overall Description 2 1 Product Perspective The software product being developed is for a new portable stand alone device which functions as a camera and language translation device for text audio input and common signs The product works with other software products like an Embedded Operating System Databases for text and speech Recognition and Translation Software The product uses hardware specially designed for this purpose The hardware is a 4 5 inches x 2 5 inches x 0 5 inches rectangular device equipped with a microphone a camera speakers SD Card Slot USB 2 0 port a touch screen and a physical button control panel Currently there is no device which combines all functionalities the way the nTravel does Therefore it is a prototype of a new product that merges two separate device families personal translators and digital cameras Refer to the attached use case diagram for further information 2 2 Product Features The nTravel contains the following key features Software Requirements Specification for nTravel Page 4 1 Captures an image containing text recognizes text from it and translates it to required language An exemplary use of this functionality is translating a restaurant menu or a sign at a market when the l
23. ry 3 2 12 Special Requirements Memory must be available for picture to be saved 3 3 Use case name and identifier Translate written text U3 3 3 1 Objective The object of the U3 use case is to translate any chosen text in the device to any desired language It would help anyone understand the foreign text in his or her device The foreign text would be typed into the device 3 3 2 Priority This requirement is high priority 3 3 3 Source The source of this use case is the customer 3 3 4 Actors The only actor in this part is the customer Software Requirements Specification for nTravel Page 11 3 3 5 Flow of Events 3 3 5 1 Basic Flow 3 3 5 1 2 The chosen text is read 3 3 5 1 3 The language is identified 3 3 5 1 4 Then it is compared to the downloaded database in our device 3 3 5 1 5 The text is then translated into the desired language 3 3 5 1 6 Final result will be either displayed on the screen or will be output through the speaker depending on the user s choice of output 3 3 5 2 Alternative flow At step 3 3 5 1 2 the device does not recognize the language due to incorrect input 3 3 5 2 1 The device beeps and the message INVALID INPUT is displayed on the screen 3 3 5 3 Exception Flow At step 3 3 5 1 4 the device cannot find translations in the database 3 3 5 3 1 The device beeps and the message NOT TRANSLATED is displayed on the screen 3 3 6 Includes Typing in the text comparing to databas
24. s Specification for nTravel Page 27 memory to store the picture remains 3 3 7 1 High Customer U3 The system shall John Doe receive text input from the user 3 3 7 2 High Customer U3 The system shall John Doe identify the language of the text entered 3 3 7 3 High Customer U3 U4 The system shall John Doe U5 compare the input to the database 3 3 7 4 High Customer U3 The system shall John Doe translate the text into the desired language 3 3 7 5 High Customer U3 The system shall John Doe output the translated text 3 3 7 6 High Customer U3 U4 The system shall John Doe U5 indicate when it cannot translate the input 3 3 7 7 High Customer U3 U4 The system shall John Doe indicate when the text s language cannot be identified 3 4 7 1 High Customer U4 The system shall John Doe record speech using the microphone 3 4 7 2 High Customer U4 The system shall John Doe identify the language of the spoken words 3 4 7 3 High Customer U4 The system shall John Doe compare the input to the database 3 4 7 4 High Customer U4 The system shall John Doe output the spoken language as text 3 4 7 5 High Customer U4 The system shall John Doe output the spoken language as Software Requirements Specification for nTravel Page 28 speech 3 5 7 1 Medium Customer US The system shall John Doe identify a sign in an existing pict
25. s software applications and database 3 6 2 Priority This requirement is low priority 3 6 3 Source The source of this requirement is the developers 3 6 4 Actors Customer Customer s Computer Master Database 3 6 5 Flow of events 3 6 5 1 Basic Flow 3 6 5 1 1 User connects the device to the computer using a USB 2 0 cable 3 6 5 1 2 The computer identifies the nTravel as being connected 3 6 5 1 3 The software on the computer asks the user if it can search online for updates 3 6 5 1 4 User says yes 3 6 5 1 5 Software looks for update Software Requirements Specification for nTravel Page 18 3 6 5 1 6 If updates are found they are downloaded to the device amp installed 3 6 5 1 7 User disconnects the device from the computer 3 6 5 2 Alternative Flow At step 3 6 5 1 3 the user says no 3 6 5 2 1 The software exits without updating 3 6 5 2 2 The user can now remove the device from the computer 3 6 5 3 Exception Flow At step 3 6 5 1 1 the computer does not detect the nTravel device 3 6 5 3 1 Error message UNKNOWN DEVICE is displayed suggesting that the user check nTravel software installation on computer 3 6 6 Includes None 3 6 7 Requirements 3 6 7 1 The system shall communicate via USB 2 0 using the drivers installed on the user s computer 3 6 7 2 The system shall relay information regarding current software version information such that it can be determined whether a software u
26. tem shall identify the language in a sign 3 5 7 3 The system shall compare the sign to signs that exist in the database 3 5 7 4 The system shall translate any text on the sign 3 3 7 3 The system shall query the user as to the format of output to use text or speech 3 5 7 5 The system shall output the sign information as text 3 5 7 6 The system shall output the sign information as speech 3 3 7 6 The system shall indicate when a translation of the sign cannot be found 3 5 7 7 The system shall indicate when the sign s language cannot be recognized 3 5 8 Preconditions None 3 5 9 Post conditions The sign has been interpreted into the desired language and final output has reached the user in his desired language 3 5 10 Nonfunctional requirements 3 5 10 1 Performance Requirements Software Requirements Specification for nTravel Page 17 3 5 10 1 1 Maximum allowed execution time for U5 use case is 5 seconds starting when the user requests a sign translation and ending when the audio visual output has been transmitted 3 5 10 2 Safety Requirements None 3 5 10 3 Security Requirements None 3 5 10 4 Software Quality Requirements None 3 5 11 Notes Issues None 3 5 12 Special Requirements The database needs to be updated frequently by the user by connecting the device to any computer and looking for updates 3 6 Use case name and identifier Update device software U6 3 6 1 Objective Update is used to update product
27. the language of the spoken words 3 4 7 3 The system shall compare the input to the database 3 3 7 3 The system shall query the user as to the format of output to use text or speech 3 4 7 4 The system shall output the spoken language as text 3 4 7 5 The system shall output the spoken language as speech 3 3 7 6 The system shall indicate when a translation cannot be found 3 4 7 6 The system shall indicate when the speech s language cannot be identified 3 4 8 Preconditions The user has recorded the speech into the device 3 4 9 Post conditions The speech has been translated into the desired language and final output has reached the user in his her desired form The user understands the foreign speech 3 4 10 Nonfunctional requirements 3 4 10 1 Performance Requirements 3 4 10 1 1 Maximum allowed execution time for U4 use case is 5 seconds for every 30 words being processed 3 4 10 2 Safety Requirements None 3 4 10 3 Security Requirements None 3 4 10 4 Software Quality Requirements None 3 2 11 Notes Issues None 3 4 12 Special Requirements The database needs to be updated frequently by the user by connecting the device to any computer and looking for updates Fast processing is an Software Requirements Specification for nTravel Page 15 additional special requirement 3 5 Use case name and Identifier Translate signs U5 3 5 1 Objective The object of the US use case is to interpret any chosen sign with or without text in
28. ure 33 1 2 Medium Customer U5 The system shall John Doe identify the language in a sign 3 5 7 3 Medium Customer U5 The system shall John Doe compare the sign to signs that exist in the database 3 5 7 4 Medium Customer U5 The system shall John Doe translate any text on the sign 39 10 Medium Customer US The system shall John Doe output the sign information as text 3 5 7 6 Medium Customer US The system shall John Doe output the sign information as speech EN Medium Customer US The system shall John Doe indicate when the sign s language cannot be recognized 3 6 7 1 Low Development U6 U8 The system shall Team communicate via USB 2 0 using the drivers installed on the user s computer 3 6 7 2 Low Development U6 The system shall Team relay information regarding current software version information such that it can be determined whether a software update is required 3 6 7 3 Low Development U6 The system shall Team allow software updates to be transferred to it via Software Requirements Specification for nTravel Page 29 USB 2 0 from the user s computer 3 6 7 4 Low F Development U6 The system shall Team indicate when no software updates are available 3 6 7 5 Low F Development U6 U8 The system shall Team indicate when the nTravel device is unrecognizable by the user s computer 3 7 7 1 High F Customer U7 The system shall John Doe allow the user t
29. y chosen speech in the device to any desired language It would help anyone understand the foreign speech in his or her device The foreign speech would be recorded into the device by the in built Software Requirements Specification for nTravel Page 13 microphone 3 4 2 Priority This requirement is high priority 3 4 3 Source The source of this use case is the customer 3 4 4 Actors The only actor in this part is the customer 3 4 5 Flow of Events 3 4 5 1 Basic Flow 3 4 5 1 1 Speech is recorded by microphone 3 4 5 1 2 Language being used is identified 3 4 5 1 3 Speech is compared to database 3 4 5 1 4 Speech is translated to the desired language 3 4 5 1 5 Final result will either be displayed on the screen or will be output through the speaker depending on the user s choice of output 3 4 5 2 Alternative flow At step 3 4 5 1 2 the device does not recognize the language due to incorrect input 3 4 5 2 1 The device beeps and the message INVALID INPUT is displayed on the screen 3 4 5 3 Exception Flow At step 3 4 5 1 4 the device cannot find translations in the database 3 4 5 3 1 The device beeps and the message NOT TRANSLATED is displayed on the screen 3 4 6 Includes Recording speech comparing to database displaying translated speech 3 4 7 Requirements 3 4 7 1 The system shall record speech using the microphone Software Requirements Specification for nTravel Page 14 3 4 7 2 The system shall identify
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