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1. FIG 4A illustrates an example for controlling the location of the cursor by employing a predetermined contact means for contacting the touch panel of a remote controller Refer ring to FIG 4A reference numeral 34 denotes a predeter mined contact means for example a finger or pen in the drawings a finger is depicted At this time the contact location of the contact means on the touch panel is trans mitted to an image apparatus as for example here a tele vision in the form of an infrared signal FIG 4B illustrates an example of selecting a function on the screen of an image apparatus such as a television by controlling the position of a cursor 42 according to the contact location of the contact means i e the finger shown in FIG 4A Referring to FIG 4B reference numeral 36 denotes an image apparatus screen such as a television Screen and reference numeral 38 denotes a main screen displaying an image such as that reproduced from a video cassette recorder or received from a predetermined broad cast program Reference numeral 40 denotes a menu screen displaying various functions e g function 1 to function 10 shown in FIG 4B which can be selected and 42 denotes a cursor The position of cursor 42 on the image apparatus screen 36 is controlled according to the contact location of the contact means 34 on the touch panel which is transmit ted from the remote controller shown in FIG 4A as an infrared signal to the2. a method for displaying a menu of functions on a screen of a display and selecting a function by using a cursor can be used The cursor can be moved by employing a predetermined contact means for example a finger or pen on the touch panel Referring to FIG 7 reference numeral 10 denotes a remote controller 11 denotes a touch panel 12 denotes a touch sensor 13 denotes a scan converter 14 denotes a key matrix 15 denotes a microprocessor 16 denotes a infrared signal transmitter 17 denotes a power controller 20 denotes the apparatus to be remotely controlled here for example a television 21 denotes an infrared signal receiver 23 denotes a microcomputer 25 denotes a graphics cursor controller 27 denotes a display and 29 denotes a power supply The device shown in FIG 7 can be explained as follows Touch sensor 12 senses the contact point of a contact means employing a user s finger or a pen and the character input by the contact means onto the touch panel 11 In other words touch sensor 12 senses the current location by the 5 545 857 7 contact of a point having a location value corresponding to the X axis and Y axis of touch panel 11 Scan converter 13 converts the contact point or the input character to data which is recognizable by microprocessor 15 and outputs the result to microprocessor 15 Microprocessor 15 drives infrared signal transmitter 16 for transmitting the infrared signal according to the contact
3. cursor are used to select a function shown on a menu screen 345 169 173 175 157 158 displayed on the image apparatus The selection is made according to the movement of the cursor causing the image 56 References Cited apparatus to perform the function corresponding to either the character input onto the touch panel or the function selected U S PATENT DOCUMENTS by the cursor The result of employing a touch screen is to 4 293 734 10 1981 Pepper Jt 178 18 reduce the number of keys of the remote controller and thus 4 825 209 4 1989 Sasaki 340 825 72 perform the desired function more easily 4 933 660 6 1990 Wynne Jr 338 114 5 038 401 8 1991 Inotsume 345 173 16 Claims 7 Drawing Sheets CURSOR FU CONTROL SENSE CONTACT LOCATION 110 DIGITIZE CONTACT LOCATION GENERATE REMOTE CONTROL SIGNAL CORRESPONDING TO 120 DIGITIZED CONTACT POINT END NCTION CHARACTER INPUT SENSE CHARACTER INPUT 140 DIGITIZE SENSED CHARACTER 150 GENERATE REMOTE CONTROL SIGNAL CORRESPONDING TO DIGITIZED CHARACTER 160 END 5 545 857 Sheet 1 of 7 Aug 13 1996 U S Patent 091 0S1 Ori YALOVYVHO Q3SN3S 3ZLLI9IQ LAdNI QN3 H3 L0VHVHO Q32ZI LISIG Ol OINIGNOdS3YYOD IVNOIS 1O41NOO JLOWSY 3lV33N39 YILOVYVHD 3SN3S YILOVYVHO 0 011 QN3
4. 7 Aug 13 1996 U S Patent 33 3938 VN9IS Q38V33NI 5 545 857 1 REMOTE CONTROL METHOD AND APPARATUS THEREOF BACKGROUND OF THE INVENTION The present invention relates to a remote control method and apparatus thereof More particularly it relates to a remote control method and apparatus which includes a touch panel on the remote control apparatus so as to perform a remote control operation of equipment by means of input ting a character for controlling a relevant function of the equipment or selecting a function of the equipment by means of a cursor A remote controller generally has numerous keys provid ing several tens of functions thereby enabling the selection of such functions at a location remote from the equipment to be controlled Such a remote control function greatly con tributes to user convenience when operating the equipment for example a television or videocassette recorder How ever the many keys a number proportional to the number of selectable functions require users to remember by asso ciation all the functions corresponding to each key when a desired function is to be performed However this is con trary to the original intention of enhancing the convenience of selecting the various functions Moreover if a user fails to recall a given key function a user manual must be consulted which further burdens the user SUMMARY OF THE INVENTION Accordingly it is an object of the pre
5. key 28 for selecting a television or videocassette recorder a character cursor selection key 30 and a touch panel 32 In fact a remote controller according to the present invention does not require the power key 26 or the television video cassette recorder selection key 28 However these keys are included considering their frequent use Further other fre quently used keys for example a channel key or volume key can also be included in the remote controller FIG 3A illustrates a touch panel in a remote controller Referring to FIG 3A a location is indicated by X and Y axes Reference numeral 32 denotes a touch panel provided in a remote controller and 33 denotes a location point having a particular location value A format of the data according to the location point on the touch panel will be explained in relation to step 130 In step 130 a remote control signal i e an infrared signal is generated corresponding to the digitized contact point of step 120 This is explained with reference to FIG 3B and FIG 4B Referring to FIG 3B the basic data format of the present invention can be the same as a conventional data format However since a location value on the touch panel is expressed two dimensionally that is to say according to the X axis and Y axis of the touch panel X axis and Y axis information signals are generated respectively An example data format is shown in FIG 3B in which signal information exists for e
6. the cursor displayed on the image apparatus at a location corresponding to the sensed location of the contact point of the contact means on the touch panel and selecting a function displayed on the image apparatus according to the location of the cursor sensing a character input onto said touch panel if the character is selected in said selecting step digitizing the sensed character and generating a signal corresponding to the digitized character and transmitting the generated signal to the image apparatus in order to perform a function corresponding to the sensed character 15 20 30 45 50 55 65 2 To accomplish another object of the present invention there is provided a remote controller for remotely control ling an image apparatus according to a remote control signal the controller comprising a touch panel a touch sensor for sensing one of a contact point and a character input on said touch panel with a contact means and outputting a sensing signal a scan converter for converting the sensing signal into a digital data form a key input device having at least a character cursor selection key for indicating a selection of one of a cursor mode and a character mode a processor for recognizing an output signal of said scan converter and a key signal of said key input device and outputting a drive signal according to the recognition result and a transmitter for generating said remote control signal according to the driv
7. the location of the contact point of the contact means on the touch panel and generating a location value corresponding to the sensed location with respect to a X axis and a Y axis of the 5 touch panel the location value including X axis loca tion information and Y axis location information 3 A remote control method according to claim 2 wherein in the step of digitizing the location of the contact means on the touch panel the location of the contact point on the touch panel is digitized with respect to the X axis and the Y axis of the touch panel 4 Aremote control method according to claim 3 wherein in the step of generating a signal corresponding to the digitized location of the contact point of the contact means on the touch panel separate digitized signals are respec tively generated for the X axis location information and the Y axis location information 5 Aremote control method according to claim 1 in which the step of sensing the character input is performed by statistically recognizing the input character 6 A remote control method according to claim 1 in which said step of tracing said character input is comprised of sensing traces formed by moving the contact means over the touch panel having at least one phase characteristic and said step of sensing said character is comprised of searching and statistically sensing whether a previously stored phase characteristic value is the same as a characteristic value of the inpu
8. LNIOd LOVLNOO Q3ZI LIOIQ OL S9NIQNOdS33NOO TVN9IS TOYLNOD 310 38 31V33N39 NOI LV2O LOV LNOO 3ZI LISIQ NOILVO2O1 LOVINOD 3SN3S YOSINO Told 5 545 857 Sheet 2 of 7 Aug 13 1996 U S Patent Jl4 U S Patent Aug 13 1996 Sheet 3 of 7 5 545 857 FIG 3A Y AXIS Totoktokokokokokokokoka k e BR 4 32 tct 33 4 X AXIS X AXIS FIG 3B X AXIS SIGNAL INFORMATION Y AXIS SIGNAL INFORMATION 5 545 857 Sheet 4 of 7 Aug 13 1996 U S Patent S NOLLONQ3 NOLLONQ3 NOONA HT Ola CD GERD GHD Vy Old 5 545 857 Sheet 5 of 7 Aug 13 1996 U S Patent FIG 5A N N 44 34 S 4 T 14 pot f kL LZ o 3k q T SE FIG 5B t uS qM E M Nat FA TT U S Patent Aug 13 1996 Sheet 6 of 7 5 545 857 O N a N m 5 0 EA Pa O N CN FIG 6A TELEVISION C Coco 5 545 857 Sheet 7 of
9. SDA A UA LU United States Patent 19 11 Patent Number 5 545 857 Lee et al 45 Date of Patent Aug 13 1996 34 REMOTE CONTROL METHOD AND 5 134 388 7 1992 Murakami 178 19 APPARATUS THEREOF 5 162 783 11 1992 Moreno 345 175 5 311 207 5 1994 Kusumoto 345 173 75 Inventors Sang su Lee Suwon Chang wan OTHER PUBLICATIONS Hong Anyang both of Rep of Korea Infrared Remote Control Transcoder Jul 1983 Dp 73 Assignee Samsung Electronics Co Ltd 317 322 Kyungki Do Rep of Korea Primary Examiner Stephen Chin Assistant Examiner Vijay Shankar 21 Appl No 426 618 Attorney Agent or Firm Sughrue Mion Zinn Macpeak amp 22 Filed Apr 21 1995 Sen 30 Foreign Application Priority Data 57 ABSTRACT Jul 27 1994 KR Rep of 94170 deed control e apparatus ee con Jan 20 1995 KR Rep of Korea 95 955 toller having a touch panel as an input device performs a remote control operation of an image apparatus such as a 51 Int CL G08C 21 00 G09G 3 02 television either by inputting a character onto the touch 52 D S CE eset 178 18 178 19 178 20 panel or by controlling a cursor according to the contact 345 156 345 157 345 158 345 169 345 173 location of a finger or a pen contacting the touch panel The 345 174 345 175 input character or contacting the touch panel to control a 58 Field of Search 178 18 20 345 156
10. ach axis with a separate pulse or signal area e placed between the two information signals Each of the X axis and Y axis information signals are divided into a 15 20 25 30 35 40 45 50 55 60 65 4 plurality of signal areas denoted a d in FIG 3B The portions of signals a and b for either of the information signals are custom pulses comprised of for example 8 bits c is a data signal comprised of for example 8 bits and d is a signal representing the complement of data signal c used for preventing data transmission errors Either a high or low level can be arbitrarily assigned to each bit of the signal Furthermore signals a and b may contain for example custom information such as password and identification information for a particular electronic apparatus For example 8 bit location data c may be 00000001 for each of the X axis and Y axis information signals when the contact means contacts the touch panel at coordinates 1 1 The data is transmitted to a remote controlled appa ratus to generate a cursor at the location of a display screen of the remote controlled apparatus corresponding to coor dinates 1 1 of the touch panel The data format shown in FIG 3B is simply an example data format for transmission of the touch panel information and can be assigned arbitrarily by the manufacturer In other words the present invention is not limited to a particular data format
11. alternatively perform ing on and off operations FIG 6B illustrates an example of inputting the character M via the touch panel of remote controller 24 When an M is traced on the touch panel data correspond ing to character M is generated and the corresponding 15 20 30 35 45 50 55 65 6 infrared signal is transmitted to television 20 The function of character M is arbitrary here however it stands for MUTE Accordingly the television executes the MUTE function muting the sound output When a method for controlling a remote controlled appa ratus by means of inputting characters onto a touch panel according to the present invention is compared with the conventional method there is no difference in the transmis sion of the infrared signal for performing a predetermined function to a television However keys corresponding to each function are directly provided to a remote controller Therefore the function of the relevant key is directly rec ognized and the key is pressed in order to perform a predetermined function The infrared signal corresponding to the key is generated and transmitted to the television However in the present invention all functions which would on a conventional remote controller be input via a key are input as simple characters onto a touch panel except those frequently used In fact even these frequently used keys are unnecessary and can be replaced
12. ble and step 140 can be satisfied further if other techniques for sensing the input character are pro vided Step 150 is for putting the character sensed in step 140 into a digital data form or in other words digitizing the sensed character At this time in general the American Standard Code for Information Interchange ASCII can be employed for digitally encoding the sensed character Step 120 is in accordance with the above explained data format except that data pulse c is an ASCII code for representing a character and does not represent location data In step 160 the remote control signal corresponding to the character which is digitized in step 150 is generated for example as an infrared signal This will be explained with reference to FIG 6A and FIG 6B For example FIG 6A illustrates the inputting of the character P onto the touch panel of remote controller 24 when television 20 is turned off If television 20 is turned off remote controller 24 senses the P and generates the data corresponding thereto The data is transmitted to television 20 as an infrared signal If television 20 is turned on remote controller 24 senses character P written on the touch panel and again generates the data corresponding to P The data is similarly trans mitted to television 20 as an infrared signal and the televi sion is turned off This is the same as the conventional power key having a toggle characteristic for
13. by inputting characters via the touch panel Thus the corresponding character is sensed digitized and then transmitted to a television as an infrared signal which constitutes a signifi cant operational difference from the conventional method As a modified example the function of the remote controlled apparatus can be controlled and the desired character can be input stored and displayed onto a display by inputting characters onto the touch panel provided on a remote controller For example messages such as absent or Happy Birthday can be input and stored for display at a desired time by employing a reservation function in which the characters are stored in memory in a known manner A method for performing a control by employing a character and a method for performing a control by employ ing a cursor can be used in combination by means of properly controlling the character cursor selection key FIG 7 is a structure block diagram showing a remote controller and remote controlled image apparatus according to the present invention The remote controller of the present invention includes a touch panel 11 Touch panel 11 is utilized as predetermined input means for inputting an instruction for selecting the function of the remote controlled apparatus The function of the remote controlled apparatus can be selected and input onto the touch panel by employing the simple character input technique described above In addition
14. e signal said processor and transmitting the remote control signal to said image apparatus BRIEF DESCRIPTION OF THE DRAWINGS The above objects and other advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings in which FIG 1 is a flowchart according to an embodiment of a remote control method of the present invention FIG 2 illustrates keys and a touch panel provided on a remote controller FIG 3A illustrates each location value of a touch panel in the remote controller shown in FIG 2 and FIG 3B illustrates a data format corresponding to the location value of the touch panel shown in FIG 3A FIG 4A and FIG 4B illustrate an example of selecting a function of a display screen by controlling a cursor location over a predetermined contact means on the touch panel of the remote controller FIG 5A illustrates an example of inputting a character as a Gothic type character onto the touch panel and FIG 5B illustrates an example of inputting a character as a written type character onto the touch panel FIG 6A illustrates an example of inputting the character P onto a touch panel of a remote controller in order to apply power to a television and FIG 6B illustrates an example of inputting the character M onto a touch panel of the remote controller and FIG 7 is a block diagram showing a remote controller and a r
15. emotely controlled image apparatus according to the present invention DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT The present invention will be explained in more detail with reference to the attached drawings FIG 1 is a flowchart according to an embodiment of a remote control method of the present invention Referring to FIG 1 reference numeral 100 denotes a step of selecting either a character or a cursor as a function control input means for selecting a function step 110 denotes the step of sensing a contact point which is the point on the touch panel which depending on whether a finger or a pen contacts the touch panel if cursor is selected as the function control input means Step 120 denotes a step of digitizing the sensed contact point so as to place it into a digital data form Step 130 denotes the step of generating a remote control signal corresponding to the digitized contact 5 545 857 3 point Step 140 denotes the step of sensing a character input to the touch panel if character is selected as the function control input means Step 150 denotes the step of digitizing the sensed character so as to place it into a digital data form Finally step 160 denotes the step of generating a remote control signal corresponding to the digitized character Each step of the flowchart shown in FIG 1 will be explained with reference to FIG 2 and FIGS 3A amp 3B through FIGS 6A amp 6B In step 100 the type o
16. erein said key input device is comprised of a key matrix 11 Aremote controller according to claim 9 wherein said processor is a microprocessor 12 Aremote controller according to claim 9 wherein said image apparatus comprises a receiver for receiving the remote control signal corre sponding to said contact location of the touch panel 20 40 45 50 60 65 5 545 857 9 10 converted into the digital data form if the cursor mode having a location value with respect to the X axis and Y axis is indicated by said character cursor selection key of said touch panel and outputs the sensing signal based on a graphics cursor controller for generating a menu of the sensed location functions and a cursor I 15 A remote controller according to claim 14 wherein a microcomputer connected to said receiver and said said remote control signal transmitter transmits the remote graphics cursor controller for recognizing the received contro signal comprised of remote control signal and outputting a signal to said a X axis location information sub signal corresponding graphics cursor controller to display the menu and to to the X axis location of the sensed contact point and control the cursor according to said contact location of T the touch panel so as to select a menu function accord 10 a Y axis location information sub signal corresponding to ing to movement of the cursor the Y axis location of the sensed contact point w
17. f function control input selection is determined for selecting a function of the image apparatus That is a selection is made between using either a character as the function control input means or using a cursor for selecting a function displayed on a screen by means of displaying a menu of functions on the screen of the image apparatus If cursor is selected the cursor which is generated corresponding to the contact point on the touch panel is moved to control the image apparatus In either case the remote controlled apparatus such as a television or video cassette recorder is controlled by employing the remote controller having a touch panel First a method for controlling a remote control apparatus by employing a cursor as the function control input means is explained In step 110 a contact point is sensed by a predetermined contact means for example a finger or pen on the touch panel if cursor is selected as the function control input means A touch panel system for inputting information by applying one s finger to a touch panel is disclosed for example in U S Pat Nos 4 293 734 and 4 933 660 In step 120 the contact point on the touch panel which is sensed in step 110 is read and the result digitized placing it into a digital data form which is further explained below with respect to FIG 2 and FIG 3A FIG 2 illustrates keys and a touch panel provided on a remote controller 24 having a power key 26 a selection
18. herein 13 remote controller according to claim 12 wherein said Y axis location information subsignal is separate said microcomputer recognizes character information in the from the X axis location information sub signal remote control signal if the character mode is selected by 16 A remote controller according to claim 9 wherein said said character cursor selection key and outputting a signal to character input is encoded as ASCII data and said ASCII initiate execution of a function which corresponds to the data included in the transmitted remote control signal if a character represented by the character information character mode is selected 14 A remote controller according to claim 9 wherein said touch sensor senses the location of the contact of the point k
19. image apparatus That is to say for example the functions are displayed on a television menu screen so that the function can be selected by employing a cursor Thus a user can control the cursor 42 to select a desired predetermined function displayed on the image apparatus screen by using a contact means such as the user s finger 34 to contact the touch panel of the remote controller A method for controlling a remote controlled apparatus by employing a character as control input means is now explained In step 140 shown in FIG 1 the character input onto a touch panel is sensed if character is selected as the function control input means in step 100 This step is explained with reference to FIG 5A and FIG 5B FIG 5A and FIG 5B illustrate the case where the image apparatus is controlled by inputting a character onto the touch panel of the remote control For example a character C is input onto the touch panel 32 by tracing the shape of the character C with a user s finger or a pen for 5 545 857 5 example The character C indicates a channel change operation Further a line is drawn on the touch panel with the finger from the bottom of much panel 32 in an upward direction in order to perform a channel up operation In other words for a television the television channel can be changed to the next higher channel by tracing the character C and drawing a line in an upward direction on the touch panel of the rem
20. oller having a touch panel and a contact means said method comprising the steps of selecting one of a character and a cursor as a function control input means for selecting a function of the image apparatus sensing a location of a contact point of the contact means on the touch panel if the cursor is selected in the selecting step digitizing the location on the touch panel of the sensed contact point generating a signal corresponding to the digitized location of the contact point and transmitting the generated signal to the image apparatus positioning the cursor displayed on the image apparatus at a location corresponding to the sensed location of the contact point of the contact means on the touch panel selecting a function displayed on the image apparatus according to the location of the cursor tracing a character onto the touch panel with the contact means if the character is selected in said step of selecting one of a character and a cursor as a function control input means sensing said character traced onto the touch panel in said tracing step I digitizing the sensed character and generating a signal corresponding to the digitized char acter and transmitting the generated signal to the image apparatus in order to perform a function corresponding to the sensed character 2 Aremote control method according to claim 1 in which the step of sensing a location of a contact point comprises the steps of 8 sensing
21. ote controller Here since the inputting or writing of the character C cannot be done in absolutely the same manner every time the character is recognized statistically as is widely known in the character recognition art That is a character can be input generally according to a Gothic style font as shown in FIG 5A or in a handwritten style as shown in FIG 5B The method is performed by following a trace of the contact location of a finger or a pen contacting a point on touch panel 32 The character is determined based on a statistical comparison so as to determine whether a stored phase characteristic value according to the character type which is required for the character recognition and the characteristic value of the input character are the same The number of characters which can be stored in step 140 is unlimited As shown in above example the character C indicates the function of changing a channel Moreover the action of drawing a line from a lower portion to an upper portion of touch panel 32 means UP while the action of drawing a line from an upper portion to a lower portion of touch panel 32 means DOWN In addition the character V can stand for volume P for power such that inputting a P in a power off state turns the power on and the character H for displaying on line help instructions relating to the current state of the television Any number of additional assign ments are possi
22. point data character data and signals input from a key device such as key matrix 14 Power controller 17 provides the driving voltage needed for powering microprocessor 15 Infrared signal receiver 21 of television 20 receives the infrared signal transmitted from infrared signal transmitter 16 of remote controller 10 and transmits the result to microcomputer 22 Microcomputer 22 controls graphics cursor controller 25 to display a menu of functions on display 27 and generates a cursor according to the location of the contact means on touch panel 11 in order to select a function Microcomputer 22 can also control respective functional units not shown of the television 20 in order to perform a function according to the character input onto the touch panel Power supply 29 provides the necessary power to microcomputer 22 graph ics cursor controller 25 and display 27 As described above the number of keys of a remote controller is greatly decreased and the desired function can be performed easily according to the present invention Although the application describes the invention in accor dance with certain specific embodiments the invention is not limited thereto Applicants hereby incorporate by refer ence all of the teachings contained in the foreign priority documents whose benefit is claimed herein What is claimed is 1 A remote control method for performing a remote control operation of an image apparatus by using a remote contr
23. sent invention to provide a remote control method for performing a simple and easy remote control operation by reducing the number of function keys on a remote controller It is another object of the present invention to provide a remote controller having a touch panel in which characters are input via the touch panel of the remote controller for remotely controlling a corresponding function of an image apparatus It is another object of the present invention to provide a remote controller having a touch panel and which generates a cursor corresponding to a contact point of a contact means onto the touch panel in order to remotely control the image apparatus by selecting a function according to the move ment of the cursor To accomplish the above objects of the present invention there is provided a remote control method for performing a remote control operation of an image apparatus by using a remote controller having a touch panel The method com prises the steps of selecting one of a character and a cursor as a function control input means for selecting a function of the image apparatus sensing a location of a contact point of the contact means on the touch panel if the cursor is selected in the selecting step digitizing the location on the touch panel of the sensed contact point generating a signal cor responding to the digitized location of the contact point and transmitting the generated signal to the image apparatus positioning
24. t character 7 A remote control method according to claim 6 wherein the step of sensing the character input is further comprised of the step of specifying a character type wherein the step of statisti cally sensing is based on the stored phase characteristic of the specified character type 8 A remote control method according to claim 1 wherein the character which is sensed in said step for digitizing the character is convened into an ASCII code form 9 A remote controller for remotely controlling an image apparatus according to a remote control signal said remote controller comprising a touch panel a touch sensor for sensing one of a contact point and a character traced onto said touch panel with a contact means and outputting a sensing signal a scan converter for converting the sensing signal into a digital data form a key input device having at least a character cursor selection key for indicating a selection of one of a cursor mode and a character mode a processor for determining said character traced onto said touch panel recognizing an output signal of said scan converter and a key signal of said key input device and outputting a drive signal according to the recognition result and a transmitter for generating said remote control signal according to the drive signal output from said proces sor and transmitting the remote control signal to said image apparatus 10 A remote controller according to claim 9 wh
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