JP2001275069A - Digital broadcast receiving and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital broadcast receiving and reproducing device which enables digital broadcasts, differing in modulation system and format of electronic program guide information, to be viewed on itself. SOLUTION: The digital broadcast receiving and reproducing device 11 is equipped with a demodulating means which performs demodulation by running a control program 1111, a transport decoder part 114 which outputs a single program from an inputted transport stream, an MPEG2 stream reproduction part 115 which reproduces an MPEG2 stream, a D-VHS magnetic recording device 116 which records and reproduces the transport stream, an information processor 117, a storage device 118 connected to the information processor 117, and a signal processor control program 1121 recorded in transport stream format on a D-VHS tape 211 which can be reproduced by the D-VHS magnetic recording device 116.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiving / reproducing apparatus, and more particularly to a digital broadcast receiving / reproducing apparatus provided with a recording device for recording a digital broadcast.

[0002]

2. Description of the Related Art In recent years, digital broadcasting has attracted attention as a new broadcasting means, and broadcasting from satellites has already started. In addition, terrestrial broadcasting and cable broadcasting will be started.

[0003] A conventional digital broadcast receiving and reproducing apparatus will be described below. In a conventional digital broadcast receiving and reproducing apparatus, when a broadcast program is received and reproduced, a signal received by an antenna is selected by a tuner and demodulated by a demodulator. The demodulated data stream is a data stream called a transport stream, and includes video information, audio information, system information, and private data information. In the transport decoding unit, video information and audio information are obtained from the transport stream,
System information and private data information are extracted separately. The extracted video information is output to the video playback unit, and the audio information is output to the audio playback unit. The video playback unit and the audio playback unit play back the input video signal and audio signal and output them to the television receiver. On the other hand, the extracted system information and private data information are output to the analysis unit. The analysis unit controls internal devices and displays the electronic program guide as character information based on the input system information and private data information.

When recording a broadcasted program, a transport decoding section reconstructs the transport stream as it is, or extracts one piece of video information and audio information to reconstruct the transport stream. Output to the recording device. The recording device records the input transport stream.

[0005] Further, when playing back a recorded program,
The recording device reads the recorded transport stream and outputs it to the transport decoding unit. The operation after the transport stream is input to the transport decoding unit is the same as the case of receiving and reproducing a broadcasted program.

[0006]

However, in the conventional digital broadcast receiving and reproducing apparatus, even if a signal using the same band is received, the demodulation method is different if the modulation method is different. There is a problem that a digital broadcast receiving / reproducing apparatus having a demodulation method corresponding to the above must be prepared.

Also, since the format of the electronic program guide information used to display the electronic program guide using the electronic program guide information in the system information differs for each broadcaster, the format of the electronic program guide information differs for each broadcaster. However, there is a problem in that the analyzing unit must prepare a different digital broadcast receiving and reproducing apparatus.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and records a control program for demodulating means comprising a signal processing device, which performs demodulation by executing the control program in the signal processing device. A digital broadcast receiving / reproducing device that can receive and reproduce a broadcast having a different modulation method by distributing the media on a medium reproducible by the device and replacing the voluntarily by a user with a single digital broadcast receiving / reproducing device. The purpose is to do.

Further, by executing the electronic program guide information analysis program, an electronic program guide information analysis program for an information processing device for analyzing the electronic program guide information is distributed on a medium that can be reproduced by a recording device, and is distributed. Provided is a digital broadcast receiving / reproducing apparatus capable of receiving and reproducing broadcasts from a plurality of broadcasters having different formats of electronic program guide information by a single digital broadcast receiving / reproducing apparatus by user's voluntary replacement. The purpose is to:

[0010]

In order to achieve the above object, a digital broadcast receiving and reproducing apparatus according to the present invention is a digital broadcast receiving and reproducing apparatus for receiving and reproducing a digital broadcast, and records received digital broadcast data. A recording device for reproduction, a medium readable and writable by the recording device, a program that is software recorded on the medium in the same format as the digital broadcast data, and an analysis of the digital broadcast data to extract a program included therein. And analysis means for performing analysis.

In the digital broadcast receiving and reproducing apparatus, the program is a signal processing device control program which is software for a demodulation device, and the signal is executed by executing the signal processing device control program which is a program for a demodulation device. Demodulating means comprising a signal processing device for demodulating a signal, a storage device connected to the signal processing device and storing the signal processing device control program, and a signal processing device control program stored in the storage device, And a replacement means for replacing with another signal processing device control program extracted and analyzed by the means.

In the digital broadcast receiving and reproducing apparatus, the program is an electronic program guide information analysis program for an information processing apparatus, and a storage device connected to the information processing apparatus for storing the electronic program guide information analysis program. Extracting the electronic program guide information analysis program stored in the storage device by the analysis means,
And a replacement means for replacing the analyzed electronic program guide information analysis program.

[0013]

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.
FIG. 1 is a diagram showing a configuration of a digital broadcast receiving and reproducing apparatus according to Embodiment 1 of the present invention. In the figure, a digital broadcast receiving / reproducing device 11 includes a tuner unit 111 for selecting a digital broadcast, a signal processing device 112, and a storage device 1
13, a transport decoding unit 114, and an MPEG2 for reproducing an MPEG2 video stream and an MPEG2 audio stream.
It comprises a stream reproducing unit 115, a D-VHS magnetic recording device 116 for recording and reproducing a transport stream, an information processing device 117, and a storage device 118.

The signal processing device 112 executes the signal processing device control program 1111 stored in the storage device 113 to demodulate the selected signal. The transport decoding unit 114 includes a signal processing device 112
The MPEG2 video stream and the MPEG2 audio stream of a single program, the system information, and the private data information are separately extracted from the transport stream demodulated in step (1) and output. In addition, the signal processing device 1
The transport stream demodulated in step 12 may be output as it is. The information processing device 117 includes an overall control program 1112 stored in the storage device 118,
By executing the analysis program 1113 and the replacement program 1114, the transport decoding unit 11
By analyzing the system information and the private information sent from the storage device 4, the internal device is controlled or the program stored in the storage device 113 is replaced.

FIG. 2 is a diagram showing a D-type according to the first embodiment of the present invention.
A medium that can be recorded and reproduced by the VHS magnetic recording device 116, D
FIG. 3 is a diagram illustrating an appearance of a VHS magnetic recording tape 211 and a data structure to be stored. In the figure, a signal processing device control program 1121 is recorded in the form of a transport stream 221 on a D-VHS tape 211 that can be recorded and reproduced by a D-VHS magnetic recording device 116.

The data structure of the transport stream 221 is configured by collecting transport packets of 188 bytes. Each transport packet is 4
Byte header 222 and 184 byte payload 2
23, and the private section 224 includes one or more payloads 223. The signal processing device control program 1121 includes a private section 224
Is recorded as private data.

Next, the operation of the digital broadcast receiving and reproducing apparatus 11 according to the first embodiment will be described. In the digital broadcast receiving and reproducing apparatus 11 according to the first embodiment, when receiving and reproducing a digital broadcast, first, the tuner section 111 selects a carrier wave received by an antenna, and the signal processing apparatus 11
Output to 2. In the signal processing device 112, the storage device 11
3 by demodulating the input signal by executing the signal processing apparatus control program 1111 stored in the transport decoding unit 1
14 is output.

The transport decoding unit 114 converts an MPEG stream corresponding to a program from the input transport stream.
2 Extract video stream and MPEG2 audio stream,
Output to the two-stream playback unit 115.

The MPEG2 stream reproducing unit 115 reproduces the input MPEG2 video stream and MPEG2 audio stream and outputs them to the television receiver.

The transport decoding unit 114
Extracts system information and private data information from a transport stream,
7 is output.

The information processing device 117 stores the input system information and private data information in the storage device 11.
8 by executing an analysis program 1113 in the tuner 8, a tuner 111, a signal processor 112, a transport decoder 114, an MPEG
The two-stream playback unit 115 is controlled by the overall control program 111
Control according to 2.

In the digital broadcast receiving / reproducing apparatus 11 of the first embodiment, when receiving and recording a digital broadcast, the transport decoding section 114 uses the signal processing apparatus 11
2 is output to the D-VHS magnetic recording device 116,
, The transport stream is recorded on a D-VHS tape.

Here, a case will be described in which a signal processing device control program is switched to receive another broadcast using a modulation method different from the currently received broadcast.

First, in the D-VHS magnetic recording device 116, the signal processing device control program 1121 reproduces a D-VHS tape recorded in a transport stream format. The reproduced transport stream is output to the transport decoding unit 114.

The transport decoding section 114 extracts the private section 224 containing the signal processing device control program 1121 from the input transport stream and outputs it to the information processing device 117.

The information processing device 117 executes the analysis program 1113 to analyze the input private section 224 and extract the signal processing device control program 1121 having an algorithm corresponding to a different modulation method as private data information. I do.

After the extraction, the information processing device 117 executes the replacement program 1114 in the storage device 118 to convert the control program 1111 stored in the storage device 113 connected to the signal processing device 112 into the extracted signal. Replace with the processing device control program 1121. At this time, the information processing device 117 outputs an operation prohibition signal to the signal processing device 112, and stops the operation of the signal processing device 112.

After the replacement is completed, the signal processing device 112 newly executes the signal processing device control program 1121 newly stored in the connected storage device 113, thereby demodulating the input signal and converting the demodulated signal into a transport stream. And outputs it to the transport decode unit 114.

As described above, in the first embodiment, a signal processing device control program for demodulating a signal is distributed on a medium that can be reproduced by a recording device, and is extracted from digital broadcast data stored in the storage device. Since the program obtained by the analysis and the program obtained from the medium can be arbitrarily replaced, a broadcast having a different modulation system can be received and reproduced by one digital broadcast receiving and reproducing apparatus.

(Embodiment 2) Hereinafter, Embodiment 2 of the present invention will be described with reference to FIGS. FIG.
FIG. 6 is a diagram illustrating a configuration of a digital broadcast receiving and reproducing apparatus according to a second embodiment of the present invention. In the figure, a digital broadcast receiving / reproducing apparatus 31 according to a second embodiment includes a tuner section 311 for selecting a digital broadcast, and a demodulation apparatus section 31 for demodulating an input signal and outputting it as a transport stream.
2, a transport decoding unit 314, an MPEG2 stream reproducing unit 315 for reproducing an MPEG2 video stream and an MPEG2 audio stream, a D-VHS magnetic recording device 316 for recording and reproducing a transport stream, an information processing device 317, and storage. And the device 318.

The transport decoder 314 converts the transport stream demodulated by the demodulator 312 into an MPEG2 video stream of a single program and an MPE
The G2 audio stream, system information, and private data information are separately extracted and output. In some cases, the transport stream demodulated by the demodulator 312 may be output as it is. Information processing device 317
Are the overall control program 3111, the analysis program 3112, the electronic program guide information analysis program 3113, and the replacement program 31 stored in the storage device 318.
14 to analyze the system information and the private information sent from the transport decoding unit 314 to control the internal device, display the electronic program guide as character information, and store it in the storage device 318. It replaces stored programs.

FIG. 4 is a graph showing the relationship between D- and D- in Embodiment 2 of the present invention.
D is a medium that can be recorded and reproduced by the VHS magnetic recording device 316.
FIG. 3 is a diagram illustrating an appearance of a VHS magnetic recording tape 211 and a data structure to be stored. In the figure, an electronic program guide analysis program 3123 is recorded in the form of a transport stream 221 on a D-VHS tape 211 that can be recorded and reproduced by a D-VHS magnetic recording device 316.

The transport stream 221 is composed of 18
An 8-byte transport packet is collected, and each transport packet has a 4-byte header 2
The private section 224 includes one or more payloads 2 and 22 and a 184-byte payload 223.
23. The electronic program guide information analysis program 3123 is recorded as system information in the private section 224.

Next, the operation of the digital broadcast receiving and reproducing apparatus 31 according to the second embodiment will be described. In the digital broadcast receiving and reproducing apparatus 31 according to the second embodiment, when receiving and reproducing a digital broadcast, the tuner unit 311 selects a carrier wave received by an antenna and outputs it to the demodulation unit 312. The demodulation device unit 312 demodulates the input signal,
A transport stream is output to the transport decoding unit 314.

The transport decoding unit 314 converts the MPEG-2 corresponding to the program from the input transport stream.
Extract 2 video stream and MPEG2 audio stream to MPEG
Output to the two-stream playback unit 315. The MPEG2 stream reproduction unit 315 reproduces the MPEG2 video stream and the MPEG2 audio stream, and outputs the streams to the television receiver.

The transport decoding unit 314 extracts system information and private data information from the transport stream,
7 is output.

In the information processing device 317, the storage device 318
Executing the analysis program 3112 in the inside, the input system information and the private data information are analyzed, and based on the analyzed information, the tuner unit 311, the demodulation unit 312, the transport decoding unit 314, and the MPEG2
The stream reproduction unit 315 is controlled by the overall control program 3111
Control according to

In the digital broadcast receiving and reproducing apparatus 31 according to the second embodiment, when the electronic program guide is displayed as character information, the information processing apparatus 317 executes the electronic program guide analysis program 3113 in the storage device 318. Analyze the electronic program guide information which is a part of the system information input from the transport decode unit 314,
Display as character data.

In the digital broadcast receiving and reproducing apparatus 31 of the second embodiment, when receiving and recording a digital broadcast, the transport decoding section 314 converts the transport stream input from the demodulation section 312 into a D-VHS magnetic recording apparatus. 316, and the D-VHS magnetic recording device 316 records the input transport stream on a D-VHS tape.

Here, in the case where a broadcaster different from the currently received broadcast is broadcasting different electronic program guide information, the electronic program guide information analysis program is switched to receive the broadcast. Will be described.

First, in the D-VHS magnetic recording device 316, the electronic program guide information analysis program 3123 reproduces a D-VHS tape recorded in a transport stream format. The reproduced transport stream is
The data is output to the transport decode unit 314.

The transport decoder 314 extracts the private section 224 containing the electronic program guide information analysis program 3123 from the input transport stream, and outputs it to the information processing device 317.

The information processing device 317 executes the analysis program 3112 to analyze the input private section 224 and extract the electronic program guide information analysis program 3123 in the system information.

After the extraction, the information processing device 317 executes the replacement program 3114 in the storage device 318 to convert the electronic program guide information analysis program 3113 stored in the storage device 318 into the extracted electronic program guide information. Replace with the analysis program 3123.

After the replacement is completed, the information processing device 317 newly executes the electronic program guide information analysis program 3123 newly stored in the storage device 318, thereby analyzing the electronic program guide information and displaying it as character data.

As described above, in the second embodiment, the electronic program guide information analysis program is distributed on a medium that can be reproduced by the recording device, and is extracted and analyzed from the digital broadcast data stored in the storage device. Since the obtained program and the program obtained from the medium can be arbitrarily replaced, a broadcast having a different electronic program guide information format for each broadcaster can be received and reproduced by one digital broadcast receiving and reproducing apparatus. .

The first embodiment and the second embodiment
In, the recording device is a D-VHS magnetic recording device, but the recording device may be an optical disk recording device or a magneto-optical disk recording device.

[0048]

As described above, according to the digital broadcast receiving / reproducing apparatus of the present invention, the demodulation means which is a signal processing apparatus for performing demodulation by executing a control program is connected to the signal processing apparatus. A storage device that stores the control program, a recording device that records and reproduces received digital broadcast data, a medium that is readable and writable by the recording device, and a control that is recorded on the medium in the same format as the digital broadcast data. A program, analysis means for analyzing the digital broadcast data stored in the medium to extract the control program, and replacement for replacing the control program analyzed and extracted by the analysis means with a control program in the storage device With the means,
Digital broadcasts having different modulation schemes can be received and reproduced by one digital broadcast receiving and reproducing apparatus.

Also, a recording device for recording and reproducing the received digital broadcast data, a medium readable and writable by the recording device, an electronic program guide analysis program recorded on the medium in the same format as the digital broadcast data, Analyzing means for analyzing the digital broadcast data stored in the electronic program guide analysis program, and analyzing the extracted electronic program guide analysis program analyzed and extracted by the analysis means into an electronic program guide analysis program in the storage device. A replacement means for replacing the program,
Broadcasting in which the format of the electronic program guide information which is a part of the system information is different can be received and reproduced by one digital broadcast receiving and reproducing apparatus.

Further, in any case, even if the system is stopped due to a power failure during the replacement of the program, the replacement operation of the program is restarted from the beginning.
It has the advantage that the system is restored.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a digital broadcast receiving and reproducing apparatus 11 according to Embodiment 1 of the present invention.

FIG. 2 is a diagram illustrating the appearance and data structure of a D-VHS magnetic recording tape according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram showing a digital broadcast receiving and reproducing apparatus 31 according to Embodiment 2 of the present invention.

FIG. 4 is a diagram illustrating an appearance and a data structure of a D-VHS magnetic recording tape according to a second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 11 digital broadcast receiving / reproducing device 31 digital broadcast receiving / reproducing device 111 tuner unit 112 signal processing device 113 storage device 114 transport decoding unit 115 MPEG2 stream reproducing unit 116 D-VHS magnetic recording device 117 information processing device 118 storage device 211 D-VHS Magnetic recording tape 221 Data structure 222 Transport stream packet header 223 Transport stream payload 224 Private section 311 Tuner section 312 Demodulator section 314 Transport decoder section 315 MPEG2 stream reproducing section 316 D-VHS magnetic recording apparatus 317 Information processing section 318 Storage Device 1111 Signal processing control program 1112 Overall control program 1113 Analysis program 1114 Replacement program 1121 Signal processing Control program 3111 overall control program 3112 analysis program 3113 electronic program guide information analysis program 3114 replacement program 3123 electronic program guide information analysis program

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/081 H04N 7/08 Z F term (Reference) 5C018 FA04 FB03 FB05 FB09 5C025 BA27 CA09 CB09 DA01 DA04 5C053 FA20 FA22 FA24 GA11 GB11 GB38 JA05 JA16 LA06 5C063 AA20 AB03 AB07 AC01 AC06 CA11 CA12 DA03 DA13 EA01 EB33 5D044 AB05 AB07 BC01 BC06 CC03 DE23 DE43 DE49 GK07 GK12

Claims (3)

[Claims] 1. A digital broadcast receiving and reproducing apparatus for receiving and reproducing digital broadcasts, comprising: a recording apparatus for recording and reproducing received digital broadcast data; a medium readable and writable by the recording apparatus; A digital broadcast receiving / reproducing apparatus, comprising: a program which is software recorded in the same format as the above; and analysis means for analyzing digital broadcast data, extracting and analyzing a program included therein. 2. The digital broadcast receiving / reproducing device according to claim 1, wherein the program is a signal processing device control program that is software for a demodulation device, and executes the signal processing device control program that is a program for a demodulation device. Demodulation means comprising a signal processing device for demodulating a signal by performing the above operation; a storage device connected to the signal processing device for storing the signal processing device control program; and a signal processing device control program stored in the storage device. And a replacing means for replacing the signal with another signal processing device control program extracted and analyzed by the analyzing means. 3. The digital broadcast receiving and reproducing apparatus according to claim 1, wherein the program is an electronic program guide information analysis program for an information processing device, and the electronic program guide information analysis program connected to the information processing device is A storage device for storing, and a replacement unit for replacing the electronic program guide information analysis program stored in the storage device with another electronic program guide information analysis program extracted and analyzed by the analysis unit. Digital broadcast receiving and reproducing apparatus.