WO2006016523A1 - データ処理システム - Google Patents
データ処理システム Download PDFInfo
- Publication number
- WO2006016523A1 WO2006016523A1 PCT/JP2005/014362 JP2005014362W WO2006016523A1 WO 2006016523 A1 WO2006016523 A1 WO 2006016523A1 JP 2005014362 W JP2005014362 W JP 2005014362W WO 2006016523 A1 WO2006016523 A1 WO 2006016523A1
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- WO
- WIPO (PCT)
- Prior art keywords
- data processing
- external
- data
- processing device
- activity detection
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
Definitions
- the present invention relates to a data processing system including a data processing apparatus that processes digital data and an external device that externally controls the data processing apparatus, and a control method thereof.
- a broadcast program is recorded as data on a built-in hard disk drive device as a storage device for 24 hours. Any program can be selected from the displayed programs and viewed.
- the program data recorded in the built-in hard disk drive can be selectively copied (copied) or moved to a recording medium such as DVD according to the input operation by the user.
- the recording / reproducing apparatus stops the external control state and gives priority to the reserved recording operation when, for example, the time of the reserved recording is reached.
- the recording / reproducing apparatus unilaterally shifts from the external control state to the non-external control state, the external device operates as if the recording / reproducing apparatus is in the external control state. It can happen.
- This problem is not limited to the recording / reproducing apparatus, and the same applies to the case where an external device externally controls a data processing apparatus that processes digital data such as computer data.
- the problems to be solved by the present invention include the above-mentioned problem as an example.
- the data processing device When an external device externally controls the data processing device, the data processing device is unilaterally controlled from the external control state to the non-external control. It is an object of the present invention to provide a data processing system and a method for controlling the data processing system that can immediately detect the transition by an external device when the state is shifted.
- a data processing system comprises: a data processing device that processes digital data; and an external device that communicates with the data processing device to externally control the operation of the data processing device.
- the data processing apparatus receives the activity detection control command by the receiving means in an external control state controlled by the external device and receiving means for receiving the activity detection control command.
- a reception notification is sent to the external device, and the reception means performs a non-external control state that is not controlled by the external device.
- Response means for transmitting a non-execution notification to the external device when the activity detection control command is received when the activity detection control command is received, and the external device is an external control operation of the data processing device.
- a command transmission means for transmitting the activity detection control command to the data processing device every predetermined time, and among the acceptance notification and the non-execution notification for the transmission of the activity detection control command.
- a discriminating means for discriminating which one is received.
- the data processing device of the present invention is a data processing device for processing digital data, a receiving means for receiving an activity detection control command transmitted from an external device, and an external control state controlled by the external device
- a receiving means for receiving an activity detection control command transmitted from an external device
- an external control state controlled by the external device
- an acceptance notification is transmitted to the external device
- the activity detection control command is transmitted by the reception means in a non-external control state that is not controlled by the external device.
- Response means for transmitting a non-execution notification to the external device when the activity detection control command is received when the activity detection control command is received.
- An external device is an external device that communicates with a data processing device that processes digital data to externally control the operation of the data processing device, and is an external control operation of the data processing device. And a command transmission means for transmitting an activity detection control command to the data processing device at a predetermined time, and an acceptance notification indicating that external control is in progress from the data processing device as a response to the transmission of the activity detection control command. And a non-execution notification indicating that non-external control is being performed.
- the program of the present invention is a computer-readable program for executing an external control method for externally controlling the operation of the data processing device by communicating with a data processing device for processing digital data, After starting the external control operation of the device, a command transmission step for transmitting an activity detection control command to the data processing device every predetermined time, and external control from the data processing device as a response to the transmission of the activity detection control command And a determination step for determining which one of the reception notification indicating non-external control and the non-execution notification indicating non-external control is received.
- a control method for a data processing system of the present invention comprises: a data processing device that processes digital data; and an external device that communicates with the data processing device to externally control the operation of the data processing device.
- the data processing device includes a reception step for receiving an activity detection control command, and the activity in the reception step in an external control state controlled by the external device.
- a detection control command is received, an acceptance notification is sent to the external device, and a non-external control state that is not controlled by the external device!
- FIG. 1 is a block diagram showing a data processing system to which the present invention is applied.
- FIG. 2 is a block diagram showing the configuration of the DV recorder in the system of FIG. Fig. 3 shows the title menu of the recorded video displayed on the TV monitor.
- FIG. 4 is a diagram showing a sequence of detecting the on state and off state of the PC control.
- FIG. 5 shows the structure of the command.
- Figure 6 shows the PC control screen displayed on the display of the personal computer.
- Fig. 7 is a flowchart showing the abnormality detection operation of the PC control operation by the DV recorder.
- Fig. 8 is a diagram showing the sequence of detection of abnormality in PC control operation by the DV recorder.
- 9A to 9H are diagrams showing processing when the PC control console is turned off immediately after title editing on a personal computer.
- FIG. 1 shows a data processing system to which the present invention is applied.
- This data processing system includes a DVD recorder 1 and a personal computer 2.
- DVD recorder 1 and personal computer 2 are connected to each other via cable 3 and can communicate with each other via an IEEE 1 394 interface. Has been.
- the video output and audio output terminals of the DVD recorder 1 are connected to the TV monitor 4.
- the DVD recorder 1 has a TV tuner 1 1, an AZD converter 1 2, an encoder 1 3, a program information acquisition unit 1 4, a control unit 1 5, a display unit 1 6, an operation unit 1 7, a remote Controller (hereinafter referred to as “remote controller”) 1 8, Light receiver 1 9, HD D (Hard disk drive) device 2 0, D VD drive device 2 1, Memory 2 2, Interface unit 2 3, Decoder 2 4, DZA converter 2 It consists of 5 and title menu creation section 26.
- remote controller remote Controller
- the TV tuner 1 1 is connected to the antenna input terminal 3 1, and the TV broadcast wave is selectively received through the antenna (not shown) connected thereto under the control of the control unit 15, and the received signal is demodulated. Thus, an analog video signal and audio signal are output.
- the output of TV tuner 1 1 is connected to A / D converter 1 2.
- the AZD converter 1 2 digitizes the analog video and audio signals output from the TV tuner 1 1.
- the AZD converter 12 is connected to external video and audio input terminals 3 2 and 3 3 and digitizes analog video and audio signals supplied thereto.
- the output of A / D converter 1 2 is connected to encoder 1 3.
- the encoder 13 converts the digitized video signal and audio signal supplied from the AZD converter 12 directly or from the interface unit 23 via the bus 28 into, for example, MPEG format compressed data.
- the program information acquisition unit 14 is connected to the TV tuner 11 and stores program information such as EPG (electronic program guide) contained in the received signal of a specific channel, that is, program information superimposed on the broadcast wave. The extracted program information is managed and output as data.
- the encoder 13, program information acquisition unit 14, control unit 15, HDD device 20, DVD drive device 21, memory 22, interface unit 23, decoder 24 and title menu creation unit 26 are connected to a common bus 28.
- the encoder 13 can supply the compressed data to any one of the control unit 15, the HDD device 20, the DVD drive device 21, the memory 22, the interface unit 23, and the decoder 24 via the path 28.
- the control unit 15 is composed of, for example, a microcomputer, and controls the entire DVD recorder 1 according to a predetermined program.
- the control unit 15 and the TV tuner 1 1 are connected by a control line (not shown) so that the reception channel of the TV tuner 11 is controlled by the control unit 15.
- the display unit 16, the operation unit 17, and the light receiving unit 19 are connected to the control unit 15.
- the display unit 16 displays a recording Z playback state including the reception channel of the TV tuner 11, the HDD device 20 and the DVD drive device 21, and the recording time and playback time.
- the operation unit 6 accepts a user input operation and supplies a command corresponding to the input operation to the control unit 15.
- the remote controller 18 has a plurality of buttons (not shown) to which command contents are assigned in advance. When any button is pressed by the user, the command signal of the command contents corresponding to the button is transmitted by infrared rays. Be emitted.
- the light receiving unit 19 receives the command signal by infrared rays emitted from the remote controller 18 and supplies the command to the control unit 15.
- the HDD device 20 is a storage device using a rewritable fixed disk (not shown).
- the HDD device 20 receives compressed data supplied from the encoder 3 in response to a write instruction from the control unit 15. Write to the address position indicated by the write instruction on the internal fixed disk.
- the data unit delimiter is from the beginning to the end of writing compressed data, and it becomes a compressed data file (data fragment). Also, in accordance with the read instruction of the control unit 15, the compressed data at the storage location specified by the read instruction is read from the fixed disk and output to the bus 28.
- the DVD drive device 21 is a removable-type storage device, and is a device capable of writing compressed data from the encoder 13 or the HDD device 20 to the optical disk 29 in accordance with a write instruction from the control unit 15.
- the optical disk 29 for example, DVD-R or DVD-RW is used.
- the DVD drive device 21 can also read the compressed data written on the optical disk 29 in response to a read instruction from the control unit 15.
- the decoder 24 decompresses the compressed data supplied from the encoder 13, the HDD device 20 or the DVD drive device 21 via the path 28 and restores the digital video signal and audio signal.
- the restored digital video signal and audio signal are supplied to the DZA converter 25 or supplied to the control unit 15 via the bus 28.
- the D ZA converter 25 converts digital video signals and audio signals into analog video signals and audio signals, and supplies them to video and audio output terminals 34 and 35.
- a TV monitor 4 and a VCR (video cassette recorder) (not shown) are connected to the video and audio output terminals 34 and 35.
- the HDD device 20 and the DVD drive device 21 are used by switching. In other words, which of the HDD device 20 and the DVD drive device 21 is prioritized during recording and playback operations depends on the command from the operation unit 17 or remote control 19.
- the control unit 15 sets according to the above.
- the interface section 2 3 is an input / output interface of the IEEE 1 394 standard, and is a circuit that enables data communication between the DVD recorder 1 and a device connected to the DV (digital video) terminal 3 6. is there.
- a personal computer 2 is connected as a device to the DV terminal 36 via a cable 3.
- the title menu creation unit 26 generates title menu display data according to the content recorded on the fixed disk of the HDD device 20 or the optical disk 29 set in the DVD drive device 21 according to the command of the control unit 15. create.
- the title menu is a list of reproducible titles of video recorded on the fixed disk of the HDD unit 20 or the DVD drive unit 21 and the optical disk 29 set in the 1 unit. Included as still images or moving images.
- the title menu display data is supplied as a digital video signal to the interface unit 23 via the D / A converter 25 or the bus 28.
- D ZA converter 25 is an output digital video signal of title menu creation unit 26 instead of a digital video signal from decoder 24 in response to a command from control unit 15 via a control line (not shown). To convert it to analog.
- a title menu creation unit 26 may be formed in the control unit 15.
- the personal computer 2 has a well-known configuration including a computer main body 41, a display unit 42, and an operation unit 43, the detailed configuration thereof is omitted.
- the computer main body 4 1 is provided with an input / output interface section (not shown) of the IEEE 1 394 standard, to which the cable 3 is connected.
- the video signal and audio signal of the broadcast wave received by the TV tuner 11 or the video signal supplied to the external video and audio input terminals 3 2 and 3 3 and The audio signal is converted into a digital video signal and audio signal by the AZD converter 1 2.
- the digital video signal and audio signal are compressed by the encoder 13 to become compressed data, and the compressed data is supplied to the HDD device 20 via the bus 28.
- the HDD device 20 writes the compressed data in the address position indicated by the write instruction in the main data recording area of the fixed disk in accordance with the write instruction of the control unit 15.
- management data for the compressed data written is written into the management data recording area of the fixed disk.
- the compressed data and its management data are recorded on the fixed disk of the HDD device 20 each time such recording is performed.
- Compressed data is data that is written in units of files in the main data recording area of a fixed disk and compressed video and audio signals for the actual recorded time.
- the management data is written in the management data recording area, the compressed data identification information for each recording, the writing position in the main data recording area, the recording rate, title, recording date and time, recording time, receiving channel (including external input) and Consists of information such as genre.
- the recording rate is selected by the user during recording from Fine, SP, LP, and EP modes. Fine, SP, LP, and EP are shown in order of increasing compression ratio.
- the selection of the recording rate specifies the compression rate when the compressed data is generated by the encoder 13.
- the title and genre may be classified by the content or genre specified by the user through the operation unit input operation, but may be included in the program information managed by the program information acquisition unit 14. May be used as is.
- a title menu button (not shown) of the remote controller 18 is operated.
- a command signal indicating a title menu display command from the remote controller 1 8 is received by the light receiving unit 19, and a title menu display command is supplied to the control unit 15.
- the control unit 15 instructs the title menu creation unit 26 to create title menu display data in response to the title menu display command.
- the title menu creation unit 26 reads out the management data of the HD D device 20 fixed disk for 6 titles in the order of the recording date and time, and displays the compressed data in the data recording area for each screen of 6 titles.
- the data is read and decoded, and the title menu display data is created using the read management data and screen data.
- the title menu creation unit 2 6 sends a completion notification to the control unit 15, and in response, the control unit 15 sends the D / A converter 2 5 to the decoder 2 4. Instructs the title menu creation unit 26 to input the output digital video signal instead of the digital video signal. Therefore, the output digital video signal of the title menu creation unit 26 is converted into an analog video signal by the DZA converter 25, and the video signal is converted to
- a title menu having recorded videos for six titles about the HDD device 20 is displayed on the TV monitor 4 via 4.
- the recorded video for the 6 titles is, for example, from the most recent recording to the oldest or the title name in Japanese alphabetical order.
- the title menu does not display the title of each recorded video, but the title of each recorded video, Information included in management data such as recording date and time may be displayed.
- the recorded content in which compressed data is recorded as a file in units of titles on the fixed disk of the HDD device 20 is displayed on the TV monitor 4 as a title menu.
- the operation is as follows: compressed data is filed on the optical disk 29 set in the DVD drive device 21 The same applies to the case where the recorded content is displayed on the TV monitor 4 as the title menu.
- Which title menu is displayed depends on which of the HDD device 20 and the DVD drive device 21 is given priority immediately before the operation of the title menu button of the remote controller 18.
- an application software predetermined program
- PC controller is installed in a storage device (not shown) such as an HDD device.
- the DVD recorder 1 receives a command from the personal computer ⁇ computer 2 and receives the command. It is stipulated that it responds within a specified time (for example, 100 ms ec).
- the PC control operation is an external control operation for controlling the DVD recorder 1 by a user operation on the personal computer 2.
- various notification commands issued from the control unit 15 of the DVD recorder 1 or in response to the command are transmitted from the interface unit 23 to the input / output interface unit of the computer main body 41 via the cable 3, and Pro in computer body 41 To Sessa (not shown).
- Various commands issued by the processor in the computer main body 41 are transmitted to the control unit 15 of the DVD recorder 1 through the reverse path.
- the command to be sent has a structure consisting of a header, command type, target device identification of the destination, command contents, and parameters.
- the command type the PC control on command (described later) or the active sense control command is specified. Commands such as playback are indicated in the command content.
- the parameter is a column of additional information.
- the notification has the same structure as the command.
- the processor in the computer main body 41 sends a PC control on command to the DVD recorder 1 immediately after the application software is started, as shown in FIG. 4 (step S2).
- the control unit 15 of the DVD recorder 1 receives the PC control-on command, it performs a PC control-on state transition process (step S3).
- the control unit 15 instructs the title menu creation unit 26 to create title menu display data for the HDD device 20.
- the title menu creation unit 26 creates the title menu display data as described above, and sends the creation completion notification to the control unit 15 when the creation is completed.
- the reception of commands sent from the personal computer 2 is validated, and the acceptance of commands sent from the remote control 18 via the light receiving unit 19 is invalidated.
- control unit 15 When the control unit 15 confirms the end of the PC controller on-state transition process, it sends a PC control-on success notification to the personal computer 2 (step S4).
- the title menu is added as additional data to the PC control-on success notification.
- the title menu display data created by the user creation section 26 is included. The title menu display data may be sent in a notification different from the PC control-on success notification.
- the processor in the computer main body 41 receives the PC control-on success notification, it receives the title menu display data as additional data of the PC control-on success notification and displays the title menu display data based on the title menu display data.
- a PC control screen (window) is created and displayed on the display unit 42 (step S5).
- the PC control screen is an external operation menu image, as shown in Fig. 6.
- symbol A is a title menu image based on title menu display data, and the structure of this image is the same as the title menu displayed on the TV monitor 4.
- Reference symbol B is a remote control image, and is composed of at least some of the buttons included in the remote control 18 such as a playback button necessary for a playback operation. These buttons are selected by moving the mouse pointer displayed on the screen of the display unit 42 by a mouse operation (not shown), and the selection button can be pressed.
- Symbol C is a title editing video, and this portion can be used to edit the title by mouse operation and character input operation.
- the full screen display button D as the video in the PC control screen is an operation button for displaying the recorded video selected from the 6 titles of the title menu video A in full screen.
- the title list button E is an operation button for shifting to the title list screen, and the end button F is an operation button for ending the PC control operation.
- the controller sends an active sense (activity detection) control command to the DVD recorder 1 (step S 1 1).
- the active sense control command is a command that is transmitted every predetermined time after receiving the PC control-on success notification and asks whether the DVD recorder 1 is in the PC control-on state.
- the control unit 15 of the DVD recorder 1 When receiving the active sense control command in the PC control on state, the control unit 15 of the DVD recorder 1 immediately transmits an ACCEPTED notification to the personal computer 2 (step S12).
- the acceptance notification is a notification indicating the PC controller control ON state in response to the active sense control command.
- the processor in the computer main unit 41 determines whether or not an acceptance notification has been received (step S 1 3). If the acceptance notification is received, it is determined that the DVD recorder 1 is in the PC control on state (step S14).
- Step S 20 The PC control is turned off.
- a NOT IMPLEMENTED notification is sent to the personal computer 2 (step S 15).
- the non-execution notification is a notification indicating the PC controller control off state in response to the active sense control command. If a non-execution notification is received, As a result of the determination, it is determined that the DVD recorder 1 is in the PC control off state (step S 16).
- step S 1 6 the display unit 4 2 is displayed to inform the user that the PC control port has been turned off.
- an alarm sound may be generated.
- the control unit 15 of the DVD recorder 1 uses the fact that the active sense control command is transmitted every predetermined time in the PC control ON state to check whether the PC control operation of the personal computer 2 is normal. Determine whether or not. That is, the control unit 15 of the DVD recorder 1 determines whether or not an active sense control command has been received in the PC control control ON state as shown in FIG. 7 (step S 21).
- the time counter is activated from the initial value (eg, 0) (step S 2 2), and an ACCEPTED notification is sent to the personal computer 2 (step S twenty three ) .
- the time counter in step S22 is executed by software processing, for example. Step S 23 is the same as step S 12 above.
- Step S2 4 the control unit 15 determines whether the measurement time of the time counter in step S22 is equal to or greater than the threshold time.
- the threshold time is a time slightly longer than a predetermined time which is an interval for repeatedly transmitting the active sense control command. If the measured time of the time counter is smaller than the threshold time, return to step S 2 1. If the measurement time of the time force counter exceeds the threshold time, it is assumed that the PC control operation is abnormal and PC control switch off state transition processing is performed. Perform (Step S25).
- FIG. 8 shows a sequence up to abnormality determination in the DVD recorder 1 when the PC control operation of the personal computer 2 changes from the normal state to the abnormal state.
- an ACCEPTED notification is sent to the personal computer 2.
- the time counter repeats the time measurement from the initial value, so that the DVD recorder 1 can determine that the PC control operation is normal.
- the active sense control command is not supplied from the personal computer 2 to the DVD recorder 1, so the time measured by the time counter in step S22 reaches the threshold time or more. Therefore, since the PC control operation is abnormal, the DVD recorder 1 executes the PC control-off state transition process in step S25.
- FIG. 9A to 9H show the titles of one of the 6 titles recorded on the personal computer 2 when the title is edited by the personal computer 2. This shows the processing when the editing result is in the PC control state before it is reflected in the management data held in the HDD device 20 of the DVD recorder 1.
- Fig. 9A is held in HDD 20 The title of the management data is shown.
- titles T1 to T6 are used for easy understanding.
- the personal computer 2 When the personal computer 2 starts the PC control operation, it sends a PC control Leonon command to the DV recorder 1 and puts the DV recorder 1 into the PC control on state. As a result, the DVD recorder 1 and the personal computer 2 are in communication with each other by the PC control operation, and as shown in FIG. 9B, all recorded video titles of the management data are stored in the information holding area of the personal computer 2. Is transmitted and held. Actually, not only the title but also all of the management data or a part including the title of the management data is transmitted to the personal computer 2. After that, the above PC control screen is displayed on the display unit 42, and the title edit video C button in the PC control screen C2 is operated to hold the PC control screen in the information holding area of the personal computer 2 as shown in FIG. 9C. One title from the title is copied and stored in the temporary storage area for editing work.
- the personal computer 2 is in a non-communication state, that is, DV.
- the non-execution notification is received as a response from the DV recorder 1 to the transmission of the active sense control command that the D recorder 1 is in the PC controller off state. Therefore, the personal computer 2 transmits the PC control on command again to the DVD recorder 1 to set the DVD recorder 1 to the PC control on state.
- the DVD recorder 1 and the personal computer 2 are in communication with each other by the PC control operation, and the titles T 1 and T3 to T6 of all the recorded images of the management data are transmitted to the personal computer 2.
- the transmitted titles Tl and ⁇ 3 to ⁇ 6 are compared with the titles ⁇ 1 to ⁇ 6 held in the information holding area, and the association is performed. Therefore, it is detected from the comparison result that title ⁇ 2 has been deleted. Also, title ⁇ 5 is judged to be the same. Note that the titles are not compared with each other, but are associated with information such as other recording dates and times in the management data.
- the edited title ⁇ 5 ′ held in the temporary storage area is overwritten and saved in the position of the title ⁇ 5 in the information holding area.
- the information of the title ⁇ 5 'overwritten in the information holding area is supplied to the DVD recorder 1 as shown in FIG. 9G, whereby the title T 5 of the management data held in the HDD device 20 is It is updated by the edited title T5 '. That is, the title editing work result on the personal computer 2 side is reflected in the management data held in the HDD device 20. Therefore, since the management data has been updated, as shown in FIG. 9H, the titles of all the recorded videos of the management data are transmitted and held in the information holding area of the personal computer 2. Ma The titles T1 to T6 in the temporary storage area are deleted.
- the DVD recorder 1 as a data processing device and the personal computer 2 as an external device are connected by wire using an input / output interface of the IEEE 1 394 standard. It is not limited to this. They may be connected by wire or wireless using I / O interfaces of other standards such as USB or LANA.
- the external device is not limited to a personal computer, and may be a data processing device such as another DV recorder.
- the data processing apparatus receives the activity detection control command by the receiving unit in the external control state controlled by the external device and the receiving unit that receives the activity detection control command.
- an activity detection control command is received when an activity detection control command is received by the receiving means in a non-external control state that is not controlled by the external device.
- Response means for sending an execution notification to an external device, and the external device starts commanding the data processor and then sends an activity detection control command to the data processor every predetermined time.
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Abstract
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JP2004-234192 | 2004-08-11 | ||
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001266435A (ja) * | 2000-03-23 | 2001-09-28 | Toshiba Corp | 録画再生装置及びその制御方法 |
JP2002215483A (ja) * | 2001-01-15 | 2002-08-02 | Matsushita Electric Ind Co Ltd | 機器制御システム並びに、機器制御システムにおけるコントローラ及びデバイス |
JP2003140998A (ja) * | 2001-10-30 | 2003-05-16 | Funai Electric Co Ltd | 家電機器ネットワークにおける文字データ転送システム |
JP2004186770A (ja) * | 2002-11-29 | 2004-07-02 | Toshiba Corp | 録画再生装置およびその遠隔制御方法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001266435A (ja) * | 2000-03-23 | 2001-09-28 | Toshiba Corp | 録画再生装置及びその制御方法 |
JP2002215483A (ja) * | 2001-01-15 | 2002-08-02 | Matsushita Electric Ind Co Ltd | 機器制御システム並びに、機器制御システムにおけるコントローラ及びデバイス |
JP2003140998A (ja) * | 2001-10-30 | 2003-05-16 | Funai Electric Co Ltd | 家電機器ネットワークにおける文字データ転送システム |
JP2004186770A (ja) * | 2002-11-29 | 2004-07-02 | Toshiba Corp | 録画再生装置およびその遠隔制御方法 |
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