JP4020672B2 - Digital broadcast receiver - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a digital broadcast receiver that receives digital broadcast waves and outputs video and audio.
[0002]
[Prior art]
For example, in a digital broadcast receiving system using a satellite, a video / audio signal is compressed using a digital signal compression technique, and a stream (transport stream) in which video / audio digital signals of a plurality of programs are time-division multiplexed is used as a transponder. Broadcasts via (satellite repeater). On the other hand, a broadcast receiving apparatus that receives such a digital broadcast selects one of a plurality of digital broadcast transponders received through an antenna by a tuner and selects one of a plurality of channels included in the one transponder. Is selected by a demultiplexing process, and a video / audio signal is output by decoding the digital signal of the selected channel.
[0003]
Conventionally, using a VCR or the like, when a reserved program is started, a reserved channel is automatically set and the received program is recorded. In recent years, when the broadcast receiving apparatus that receives the digital broadcast described above includes an interface (for example, IEEE 1394) for controlling an external device such as D-VHS, and when the reserved program starts, It is possible to record a received digital broadcast program by automatically operating a D-VHS or the like having the same interface.
[0004]
By the way, there is a standard such as IEC 61883-1, 4 regarding the control of the external recording device of IEEE1394, and the standard of control commands and descriptors between devices is GENERAL defined by 1394TA and each subunit. There is a standard.
[0005]
[Problems to be solved by the invention]
However, there are no clear rules regarding how to implement the above standards on devices, the order of command issuance, etc., and there are parts that are decided by the manufacturer. Due to the existence of this unique decision part, when the manufacturer connects different broadcast receiving apparatuses and external devices, there may be a problem that some commands are not executed.
[0006]
In view of the above circumstances, an object of the present invention is to provide a digital broadcast receiving apparatus capable of presenting a user with an operation response status of connectable equipment.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, a digital broadcast receiving apparatus according to the present invention is a digital broadcast receiving apparatus that receives a digital broadcast wave, demodulates it, and outputs video and audio. An interface for performing transmission / reception, a storage unit in which individual device operation correspondence information is recorded via the interface in the connectable external device and the broadcast receiving apparatus, and individual device operation correspondence information is read out from the storage unit And a means for displaying the device operation correspondence on the screen.
[0008]
If it is said structure, the separate apparatus operation | movement corresponding | compatible condition etc. of the external apparatus which can be connected can be shown to a user on a screen. Therefore, when a user purchases an external device and wants to connect to the broadcast receiving apparatus via the interface, avoid purchasing an external device that has been confirmed to be defective by checking the individual device operation support. be able to.
[0009]
Software and / or data can be downloaded for update processing, updated individual device operation correspondence information is acquired and stored in the storage means, and the updated individual device operation correspondence information can be displayed on the screen. It is good to be configured. According to this, even if an external device is considered to be defective at the time of purchase of the broadcast receiving device, it may become a fully compatible external device by a subsequent update of software etc., and the user acquires such information. You can purchase external devices.
[0010]
It is preferable that the operable content of each device is displayed on the screen pictorially. According to this, it is possible to easily grasp the operation support status of each device as compared with the textual display.
[0011]
It is preferable that the future correspondence schedule information is acquired and stored in the storage means, and the future correspondence schedule information can be displayed on the screen. If you like an external device that causes problems, instead of purchasing another external device instead, purchase that external device when you like it. It will be possible.
[0012]
The device information of the external device actually connected via the interface is acquired, and the individual device operation correspondence information and / or the correspondence schedule information is read from the storage unit based on the device information and displayed on the screen. May be.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A digital broadcast receiver according to an embodiment of the present invention will be described below with reference to FIGS.
[0014]
The antenna 1 is arranged outdoors in a predetermined direction, and receives a digital broadcast wave transmitted from a BS (Broadcasting Via Satellite). The antenna 1 generally includes a frequency converter, and supplies a received / frequency converted signal to the tuner 2.
[0015]
The tuner 2 extracts a signal having a specific frequency from the received high frequency digital modulation signal. That is, a process of selecting one from a plurality of transponders of digital broadcasting is performed. Further, the tuner 2 includes a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like, thereby demodulating the selected digital modulation signal and outputting a transport stream.
[0016]
The demultiplexer (DEMUX) 3 converts the transport stream received from the tuner 2 into MPEG2 (Moving Picture Experts Group 2) video stream, audio stream, PSI / SI (Program Specific Information / Service Information), and other information. To separate. The demultiplexer 3 supplies the video stream and the audio stream to the AV decoder 4 and supplies PSI / SI and other information to the MPU 17. The other information includes a download program (including IEEE 1394 device control unit software), update data, post-update individual device operation correspondence information, and correspondence schedule information. As described above, a plurality of channels are multiplexed in the transport stream, and processing for selecting an arbitrary channel from among these is performed in the transport stream from the PSI / SI. Thus, it becomes possible by taking out data such as which packet ID is multiplexed. In addition, transport stream selection (transponder selection) can also be performed based on PSI / SI information.
[0017]
The stream recording / playback unit 4 can write (record) the partial TS output from the demultiplexer 3 to a hard disk drive (HDD) 6 that is a built-in recording device, and can read the partial TS from the hard disk drive 6 (playback). ). Further, the stream recording / playback unit 4 also inputs / outputs a partial TS to / from an external recording device (a hard disk, an MO, etc., which is D-VHS in this embodiment) 31 through the IEEE 1394 interface 5. It is said. The number of external devices is not limited to one, and a plurality of external devices can be connected.
[0018]
The AV decoder 7 includes a video decoder that decodes a video stream and an audio decoder that decodes an audio stream. The video decoder decodes the input variable length code to obtain a quantization coefficient and a motion vector, and performs inverse DCT conversion, motion compensation control based on the motion vector, and the like. The audio decoder decodes the input encoded signal to generate audio data. The video data generated by the decoding is output to the video processing circuit 8, and the audio data is output to the audio processing circuit 9.
[0019]
The video processing circuit 8 receives video data from the AV decoder 7 and performs D / A conversion, for example, to convert it into a composite signal in the NTSC format. The audio signal processing circuit 9 receives the audio data output from the AV decoder 7 and performs D / A conversion to generate, for example, a right (R) sound analog signal and a left (L) sound analog signal.
[0020]
The video output circuit 10 and the audio output circuit 11 include an output resistor, an amplifier, and the like. The AV output terminal 12 is provided with an output unit (a set of left and right audio output terminals and a video output terminal), and a monitor 14 having a display and a speaker is connected to the output unit by a video / audio code 13. .
[0021]
An OSD (on-screen display) circuit 19 outputs bitmap data based on character information and color information instructed to be output from the MPU 17 to the adder 20. The adder 20 performs processing for incorporating a video based on the bitmap data into the received video. The OSD circuit 19 realizes an EPG (Electronic Program Guide) screen display based on the PSI / SI received by the MPU 17, a menu screen display, and display of the updated individual device correspondence information and correspondence schedule information according to the present invention. .
[0022]
The remote control transmitter 15 is a transmitter for sending a command to the broadcast receiving apparatus 30. When a key provided on the remote control transmitter 15 is operated, signal light (remote control signal) indicating a command corresponding to the key is transmitted from a light emitting unit (not shown). The remote control light receiver 16 receives the signal light emitted when the key of the remote control transmitter 15 is operated, converts it into an electric signal, and gives it to the MPU 17.
[0023]
Various information such as a boot program and a download program is stored in the nonvolatile memory 18 (for example, EEPROM). When the power is turned on, the MPU 17 executes from a boot program written in the nonvolatile memory 18 and performs initialization necessary for the system. The program in the nonvolatile memory 18 is expanded to a volatile memory (not shown), and the MPU 17 executes the program expanded in the volatile memory. Furthermore, the service information used for the program guide, the individual device operation correspondence information, the updated individual device operation correspondence information, the correspondence schedule information, and the like are stored in the nonvolatile memory 18 by the processing of the MPU 17.
[0024]
The individual device operation correspondence information is information stored at the shipping stage, and is individual device operation correspondence information via the IEEE 1394 interface 5 between the connectable external device and the broadcast receiving apparatus 30. Specifically, for an external recording device, “XX manufacturer model ΔΔ is OK for recording, playback, stop, fast forward, rewind, NG for special playback,” and so on. The updated individual device operation correspondence information is the individual device operation correspondence information after the software etc. after the update, and by this update, for example, in the individual device operation correspondence information, “ It changes as “Operation Confirmation OK” for recording, playback, stop, fast forward, rewind, and special playback. The correspondence schedule information is, for example, information such as “XX manufacturer's model ΔΔ is scheduled to be completely supported in x year x month”.
[0025]
The MPU 17 performs download information acquisition processing and control of the external recording device 31 using the IEEE 1394 interface 5 in addition to the overall control in the broadcast receiving device 30. When the broadcast receiving device 30 is turned on, it receives download transmission information (corresponding model information (model_id), version of the downloaded data (version_id), transmission schedule, etc.), and the download data is received. It is determined whether it is valid, and whether to perform download processing based on the setting conditions of the receiving device 30 is determined. If the user has instructed the receiving device 30 to download, the download is enabled. The same applies to the download process of the IEEE 1394 device control unit software and the acquisition of individual device operation correspondence information, etc. When the download data is sent (YES in step S1) as shown in the flowchart of FIG. 3, the IEEE 1394 device control unit. Software, individual device operation correspondence information, and correspondence schedule information are acquired (step S2).
[0026]
Further, in the external recording device control, the MPU 17 requests the power-on of the external recording device 31, the device state check, the connection establishment, the issuance of the recording start command, etc. in the procedure in which the operation can be confirmed in advance. Further, at the time of playback, the external recording device 31 is requested to turn on the power, check the device status, establish a connection, issue a playback start command, etc. in a procedure in which the operation can be confirmed in advance.
[0027]
Further, the MPU 17 displays items such as “individual device operation correspondence information” and “correspondence schedule information” at the first power-on after purchase, as items on the menu screen, or as the contents of the control panel. When the item is selected by the user, processing for displaying the content of the item is executed. Here, when the item “individual device operation correspondence information” is selected, the information stored in the memory 18 at the beginning of shipment as individual device operation correspondence information is read before the IEEE1394 device control unit software is updated. The character string corresponding to this information is displayed on the screen using the OSD circuit 19. If the software has been updated, the updated information is read out as individual device operation correspondence information, and a character string corresponding to this information is displayed on the screen using the OSD circuit 19. When the item “corresponding schedule information” is selected, the corresponding schedule information is read from the memory 18 and displayed on the screen. Note that “individual device operation correspondence information” and “corresponding schedule information” are not limited to being displayed separately, and the corresponding schedule information may be displayed in association with the display of the operation correspondence information for individual devices. Good.
[0028]
In this way, with the digital broadcast receiving apparatus having the above-described configuration, it is possible to present to the user on the screen the operation response status of connectable external devices. Therefore, when a user purchases an external device and wants to connect to the broadcast receiving apparatus via the interface, it is possible to avoid purchasing a defective external device by looking at the individual device operation correspondence list. it can. In addition, since the screen of the operation correspondence information after the update can be displayed, even if the external device is considered to be defective at the time of purchase of the broadcast receiving device 30, it may become a fully compatible external device by the subsequent software update. Yes, the user can acquire such information and purchase an external device. In addition, since future support schedule information can be displayed on the screen, even if a favorite external device causes a problem, instead of purchasing another external device instead of purchasing it, Can be purchased when the target device is to be supported.
[0029]
In addition, as shown to Fig.2 (a) (b), you may make it display the operable content about each apparatus pictorially on a screen. According to this, it is possible to easily grasp the operation support status of each device as compared with the textual content display.
[0030]
Further, in the above example, the operation support statuses of connectable external devices are presented to the user in a list, but the present invention is not limited to this. That is, device information of an external device actually connected via the IEEE 1394 interface 5 is acquired, and individual device operation correspondence information and / or correspondence schedule information is read from the memory 18 based on this device information and displayed on the screen. You may do it. This operation is shown in the flowchart of FIG. When a device is newly connected via the IEEE 1394 interface 5, the receiving device 30 can obtain the information. When information indicating that a new device has been connected is obtained (YES in step S3), device information of the external device is acquired (step S4), and whether the device is a fully compatible device based on the operation correspondence information in this device. It is determined whether or not (step S5). If it is determined that the device is completely compatible, the command is immediately received and the operation is executed (step S6). On the other hand, if it is determined that the device is not a completely compatible device, the operation corresponding information / corresponding schedule information in the device is displayed and, for example, an OK button is displayed (step S7).
[0031]
The download is not limited to a form obtained by digital broadcast waves, but includes a form obtained via a communication line (including wireless) such as a telephone line or a form read from a recording medium attached to the receiving device. .
[0032]
【The invention's effect】
As described above, according to the present invention, there is an effect that it is possible to present to the user the operation response status of connectable devices, future response schedules, and the like.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a digital broadcast receiving apparatus according to an embodiment of the present invention.
FIGS. 2A and 2B are explanatory diagrams showing display examples of device operation correspondence information. FIG.
FIG. 3 is a flowchart showing download processing.
FIG. 4 is a flowchart showing an example of display processing of device operation correspondence information.
[Explanation of symbols]
1 Antenna 2 Tuner 3 Demultiplexer (DEMUX)
4 Stream recording / reproducing unit 5 IEEE 1394 interface 18 Non-volatile memory 31 External recording device

Claims (5)

In a digital broadcast receiving apparatus that receives and demodulates a digital broadcast wave and outputs video and audio, a memory for storing information, and a download means for downloading software and / or data using the digital broadcast wave or communication line , an interface for transmitting and receiving data and control information with an external device, by the downloading further action schedule information for an individual appliance operation via the interface in the external device and the broadcast receiving apparatus connectable wherein a storage means for acquiring and recording the memory, further comprising a processing means for screen display future correspondence schedule of the individual devices operate further action schedule information is read from the memory of the individual equipment operation A digital broadcast receiver. 2. The digital broadcast receiving apparatus according to claim 1, wherein the memory stores information on individual device operation correspondence through the interface between the connectable external device and the broadcast receiving device, and the processing means A digital broadcast receiving apparatus , wherein the individual device operation correspondence information is read from the memory and the individual device operation correspondence is displayed on a screen. 3. The digital broadcast receiving apparatus according to claim 2 , wherein the storage unit updates the individual device operation correspondence information which is the recorded contents of the memory based on the individual device operation correspondence information which is update data obtained by the download unit. The processing means reads the updated individual device operation correspondence information from the memory and displays the updated individual device operation correspondence on the screen.   4. The digital broadcast receiving apparatus according to claim 2, wherein the processing means displays the operable contents of each device pictorially on the screen.   5. The digital broadcast receiving apparatus according to claim 1, wherein device information of an external device actually connected via the interface is acquired, and an individual device in the external device is acquired based on the device information. A digital broadcast receiving apparatus, wherein the processing means displays information on operation on a screen.

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