JP2003319280A - Digital broadcasting reception system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiver which does not give a sense of temporal incongruity to a viewer in reproduction even in the case that dropout of information occurs when receiving digital broadcasting to record it in a recording and reproducing device and which easily recognizes the dropout of information. <P>SOLUTION: A digital broadcasting reception system includes a reception part 20 for receiving a digital broadcasting signal to restore a desired stream signal, a recording and reproducing device 50 connected to the reception part 20, a display device 60 for displaying images on the basis of data from the reception part 20, and an audio output device 62 for outputting sounds. The reception part 20 detects the occurrence of dropout during signal recording with the recording and reproducing device 50, discriminates a dropout time, generates a dropout information signal corresponding to the dropout time to make the recording and reproducing device 50 record the dropout information signal and, with respect to the dropout part of the signal, output at least one of images and sounds based on the dropout information signal corresponding to the dropout time to the display device 60 and the audio output device 62 in reproduction. <P>COPYRIGHT: (C)2004,JPO

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 system (hereinafter referred to as a digital receiver) for receiving a digital broadcast, and particularly when receiving a digital broadcast signal and recording it in a recording / reproducing apparatus. The present invention relates to a recording and reproducing method when a dropout occurs in the signal.

[0002]

2. Description of the Related Art Currently, at home or the like, a program broadcast from a broadcasting station is viewed in real time, or once recorded using a video device and then reproduced and viewed again. With the progress of digital technology, not only analog signals but also digital signals are used for broadcasting programs from broadcasting stations. If a digital signal is used, the signal to be transmitted can be highly compressed, and more channels can be broadcast than an analog signal. However, when an abnormal weather condition such as heavy rain or snow occurs, the broadcast signal may not be transmitted correctly. In digital broadcasting, an error correction code is transmitted, and the error correction code is used to correct the error in the signal. However, if the signal cannot be restored by such an operation, the signal was not received correctly. Become. Also, if the digital receiver stops working due to a power failure, the signal will not be recorded correctly.

In digital broadcasting, not only is it viewed in real time, but broadcast signals are stored in a magnetic disk device or the like and reproduced at a time preferred by the viewer for viewing.
It is possible to select various viewing methods such as simultaneously recording while watching in real time and performing chasing playback. For this purpose, it is particularly necessary to record the broadcast signal in a recording / reproducing device that can be randomly accessed. However, when recording a program broadcast from a broadcasting station on a magnetic disk device or the like that can be randomly accessed,
When a trouble such as a radio wave failure or a power failure occurs, it becomes difficult to correctly receive a broadcast signal, and a transport stream (TS) partially lost on the disk medium is recorded continuously in time. In this way, when a record having a part of missing information is played back, the missing part is skipped and the part is played back, so that the time suddenly advances in this part, and the viewer often feels a sense of discomfort. this is,
If a dropout occurs during recording, the DIT (Dis
continuity Information Ta
ble) is inserted, and when this DIT is read during reproduction, the missing part is skipped and reproduction is performed.

When such a dropout occurs, at least the receiver side actively operates and records a signal that cannot be correctly recorded among the rebroadcast signals when the broadcast that was not correctly recorded is rebroadcast. A device having a function of complementing the above is also shown (Japanese Patent Laid-Open No. 2001-69444).
Issue).

[0005]

In the above-mentioned example, if the information that is missing due to the rebroadcast can be correctly received and complemented, the viewer will be able to watch the complete broadcast, and will not be dissatisfied. However, a broadcast recorded with a missing portion is not always re-broadcast immediately thereafter, and it may be reproduced and viewed as the missing recording. In that case, the viewer feels that time has suddenly advanced in the missing part, and it is impossible to eliminate the feeling of strangeness.

According to the present invention, even when a recording loss occurs due to a radio disturbance or a power failure while a digital broadcast is being received and a broadcast signal is being recorded in a recording / reproducing apparatus, it is possible for a viewer to temporally reproduce it. It is an object of the present invention to provide a digital receiver having excellent operability by making it possible to recognize that there is no discomfort and is missing.

[0007]

In order to solve the above-mentioned problems, a digital receiver of the present invention comprises a receiving section for receiving a digital broadcast signal and restoring it to a desired stream signal, and a receiving section connected to this receiving section. A system including a recording / reproducing apparatus for inputting and recording and reproducing at least a part of the stream signal restored by the recording section, a display apparatus for displaying an image based on the data signal from the receiving section, and an audio output apparatus for outputting audio. The receiving unit detects that a loss has occurred during recording the stream signal in the recording / reproducing apparatus and determines the missing time, generates a missing information signal corresponding to the missing time, and outputs the missing information to the recording / reproducing apparatus. At the time of recording and reproducing the signal, the missing part of the stream signal is at least one of video and audio based on the time missing information signal corresponding to the missing time. It has a configuration to output the display device and the audio output device.

With such a structure, even when there is a missing portion when the broadcast recorded in the recording / reproducing apparatus is reproduced, the viewer can recognize that there is a missing portion, and the time can be suddenly increased. Since advanced reproduction does not occur, it is possible to view without feeling discomfort.

Further, in the digital broadcast receiving system of the present invention, the error correction unit of the receiving unit notifies the receiving unit of the lack of a stream signal during recording of the stream signal in the recording / reproducing device at a predetermined frequency. It has a configuration for detecting when an uncorrectable error has occurred. With this configuration, it is possible to easily detect the occurrence of a drop in the broadcast signal being received without adding a new circuit.

Further, the digital broadcast receiving apparatus of the present invention stores the last recorded sector position in the memory when the recording / reproducing apparatus records the stream signal, and when power is supplied to the digital broadcast receiving system, The receiving unit has a configuration in which the recording data at the sector position recorded in the memory is read from the recording / reproducing apparatus to detect that a dropout has occurred during recording of the stream signal. With this configuration, even when the power supply is stopped due to a power failure or the like, and the recording / reproducing apparatus cannot record, it is possible to detect the occurrence of the loss from the record data recorded in the memory when the power supply is started. .

In the digital broadcast receiving system of the present invention, the missing information signal has a missing occurrence time, a normal reception restart time, recording target service information, a complementary stream start sector number, a complementary start sector end sector number and a missing factor. At least one selected from is recorded. With this configuration, when the information is reproduced, these pieces of information are displayed in the missing portion, so that the viewer can easily recognize the missing portion.

Further, the digital broadcasting system of the present invention further comprises a user input section in the receiving section, and when reproducing based on the stream signal recorded in the recording / reproducing apparatus,
When at least one of video and audio based on the missing information signal is output to the display device or audio output device in the missing part, the viewer operates the user input unit, and the receiving unit interrupts the output based on the missing information signal. Then, the stream signal recorded in the recording / reproducing apparatus is reproduced after the loss recovery.

With this configuration, when the viewer recognizes the missing portion, he / she can directly watch the video or audio based on the missing information signal by his / her selection.
It is also possible to operate the user input unit to watch the original broadcast.

Further, in the digital broadcast receiving system of the present invention, the receiving section is provided with a processor which executes according to a program, a program memory which stores a program for operating the processor, and a program which operates the processor. The processor has a control means, and the processor reads the program and executes a predetermined operation to detect the occurrence of the loss during recording the stream signal in the recording / reproducing apparatus, determine the loss time, and correspond to the loss time. There is a program for generating the missing information signal, recording the missing information signal in the recording / reproducing apparatus, and outputting the video or audio based on the time missing information signal corresponding to the missing time of the missing portion of the stream signal during reproduction. It is composed of

With this configuration, the operation of detecting missing information and recording the missing information signal in the recording / reproducing apparatus is performed by the processor, so that it is not necessary to provide a new circuit.

Further, the program of the present invention includes at least a processor that a receiving section for receiving a digital broadcast signal executes according to the program and a control means including a program memory for storing the program for operating the processor. And a recording / reproducing apparatus connected to the recording section, inputting and recording at least a part of the stream signal restored by the receiving section, and reproducing the recorded stream signal, and a display apparatus for displaying an image based on the data signal from the receiving section. For controlling and processing a digital broadcast receiving system including a voice output device for outputting a voice, and for detecting loss of a stream signal, determining a loss time, and loss information corresponding to the loss time by a processor. Signal generation, recording / reproducing device records missing information signal, and stream during reproduction. It is configured to output to the display device an image or sound based on the time the missing information signal corresponding to the missing time for missing part of the signal.

By using the program of this configuration, the processor can cause the operation function units such as the tuner and the TS decoder in the receiving unit, the recording / reproducing device, the display device, and the audio output device to perform necessary operations. it can.

The storage medium of the present invention is a machine-readable storage medium storing the above program.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram of a digital receiver according to a first embodiment of the present invention. The receiver comprises a receiver 20, a recording / reproducing device 50, a display device 60, and an audio output device 62.

First, the structure of the receiving section 20 will be described. The tuner 21 receives a digital broadcast wave received by the antenna 10 from a CPU (Central Procedures).
Sing Unit) 33 selects a target broadcast, performs demodulation processing, error correction processing, etc., and outputs it as a transport stream (TS). TS decoder 2
2 separates and extracts a packet unit signal from the TS in accordance with a command from the CPU 33, and supplies it to the data bus 40 as a video packet, an audio packet and information data. The video packet and the audio packet are supplied to the video decoder 24 and the audio decoder 25 via the data bus 40, respectively.

The video decoder 24 decodes the video packet, and thereby the video data is restored. The video data is supplied to the video output unit 27 via the synthesis unit 26. The video output unit 27 converts the video data into a video signal that can be displayed on a monitor or the like, and drives the display device 60. The program guide image data for displaying the program guide and the like is written in the VRAM 31, which is a video memory. When displaying the program guide, the program guide image data is stored in the VRAM 31.
Read out from the program table, and the synthesizing unit 26 synthesizes it with the video data or selects the program guide image data and outputs it. As a result, the program guide is displayed on the monitor or the like.

The audio decoder 25 decodes the audio packet, thereby recovering the audio data. The audio data is supplied to the audio output unit 28. The audio output unit 28 converts the audio data into an audio signal that can be driven by the audio output device 62, and drives the audio output device 62. Furthermore, IEEE
The E1394 control unit 29 connects and controls a device compatible with a digital interface standard for connecting electronic devices established in IEEE. The memory 23 is also used as a work buffer memory.

The CPU 33 is a processor for controlling the entire digital receiver, processing for restoring received and reproduced streams, and the like. The CPU 33 sequentially reads the programs stored in the program memory 34 as a machine-readable recording medium, and controls the processing related to the restoration of video packets and audio packets, the processing related to the restoration of information data, and the restored information data. The program information is displayed on the screen as an image, and processing for controlling the digital receiver is performed based on the information data. Further, the CPU 33 controls the viewer such as the interruption of the display of the missing portion, the tuning operation, the display of the program guide, the recording / playback of the program, the parental control processing, etc. according to the instruction information of the viewer from the user input unit 35. It also controls each part according to the program according to the command. That is, the CPU 33 and the program memory 34 constitute the control means 32 that performs each control of the digital receiver and the processing associated with the control. Further, commands for control and low-speed data transfer for processing are performed between the CPU 33 and each unit via the control bus 42.

The recording / reproducing apparatus 50 controls a recording unit 50a for recording on a recording medium on a disc, a recording control unit 50b for controlling the recording unit 50a and exchanging data with the CPU 33 of the receiving unit 20, and a final recording. It is composed of a memory 50c for storing which sector on the disk is recorded, and digitally records the content of the desired program from the received digital broadcast signal in response to a recording command from the CPU 33 provided in the receiving section 20. The present embodiment shows an example in which the recording / reproducing apparatus 50 is connected to the TS via the digital I / F 36 which is a digital interface such as IEEE1394 to record and reproduce the program. That is, the received TS is output from the TS decoder 22, and this TS is a digital I / F.
36. The digital I / F 36 selects a stream to be recorded from the TS, that is, a partial transport stream (P-TS), and supplies the P-TS to the recording / reproducing device 50. Also, the program information of the programs included in this P-TS is SIT (Selection).
It is recorded in the recording / reproducing device 50 as an Information Table). The recording / reproducing device 50 uses, for example, a hard disk device or an optical disk device capable of recording and reproducing on a disk-shaped recording medium.

The operation of recording the TS in the recording / reproducing apparatus 50 in the digital receiver configured as described above will be described with reference to FIG.

When recording in the recording / reproducing apparatus 50 during reception in the normal state, it is performed as follows.
That is, the signal received through the antenna 10 is input to the tuner 21 and subjected to demodulation processing, error correction processing, etc.
The TS is output to the TS decoder 22. This TS
Is recorded in the recording / reproducing apparatus 50 in the form of P-TS from the TS decoder 22 through the digital I / F 36. In this recording, the recording unit 50a is controlled by the recording control unit 50b to record the P-TS in a predetermined sector, and the recording control unit 50b stores the sector position information in which the P-TS was last recorded in the memory 50c. .

The cause of the loss of the TS during the reception in the normal state is a reception failure due to heavy rain or heavy snow, or a power failure during the recording. When a reception failure occurs due to heavy rain or the like and the TS is missing, the error correction unit attached to the tuner 21 detects whether or not an uncorrectable error has occurred, and determines whether or not the missing occurs. That is, the data detected by the error correction unit during reception is input to the CPU 33, and the CPU 33 determines whether or not the TS is missing. If it is determined that the TS is missing, the creation of the missing information is started, and the TS decoder 22 In response to the notification that normal data is input, the recording control unit 50b is operated to record the missing information in the recording unit 50a. FIG. 3 is a diagram for explaining the recording of this missing information. The stream before loss is composed of a TS packet of 188 bytes and a time stamp of 4 bytes. If the TS is lost during recording, the CPU 33 similarly controls the recording controller 50b to record the stream in which the time stamp and the missing information are recorded in the form of a TS packet in which the sync byte is not 0x47, and causes the recording unit 50a to record the TS packet. At this time, as shown in FIG. 3, during reproduction, recording is performed so that the missing information is sandwiched between the end of the missing stream and the beginning of the stream for which recording has been resumed. The missing information includes recording target service information, missing start time, missing end time, interpolation stream start sector number, interpolation stream end sector number, and missing factor.

When a power failure occurs during reception and the TS is lost, the recording / reproducing apparatus 50 is recording from the data recorded in the memory 50c when power is supplied to the digital receiver again. It is detected whether or not there is, and when recording is in progress, it is determined that a dropout has occurred. Based on this determination, the creation of missing information is started, and the TS decoder 22
When the data indicating that the TS is normally obtained is received from the recording control unit 50b, the missing information is recorded in the recording unit 50.
Let a record. The operation after this is the same as the above, and the description thereof is omitted.

Next, the procedure for reproducing the stream will be described with reference to FIG. In normal reproduction, the recording control unit 50b controls the recording unit 50a based on a command from the CPU 22, and outputs the P-TS from the recording unit 50a. This P-
TS is TS decoder 22 through digital I / F 36
Are input to the TS decoder 22 into a video packet and an audio packet according to a command from the CPU 33, and these are supplied to the video decoder 24 and the audio decoder 25, respectively. The video decoder 24 decodes the video packet, and thereby the video data is restored. The video data is supplied to the video output unit 27 via the synthesis unit 26. The video output unit 27 converts the video data into a video signal that can be displayed on the display device 60, and outputs the video signal to the display device 60. As a result, the viewer views the desired program on the display device 60. Further, the audio decoder 25 decodes the audio packet, and thereby the audio data is restored. The audio data is supplied to the audio output unit 28. The audio output unit 28 converts the audio data into an audio signal that can be driven by the audio output device 62, and outputs the audio signal to the audio output device 62. As a result, the viewer can hear the sound of the desired program. Furthermore, when simultaneously recording to an external device, for example, a video cassette recorder or the like, these devices are recorded by the IEEE 1394 control unit 29.
Connect to.

When the CPU 33 detects the missing information in the P-TS, it instructs the recording control unit 50b to stop the reading of the recording unit 50a. The CPU 33 stores the detected missing information in the memory 23, and further generates an interpolation stream corresponding to this missing period to generate the TS decoder 22.
To the video decoder 24 from the TS decoder 22 and outputs the interpolated data. At the same time, the CPU 33 generates display information for notifying the viewer that there is a dropout, synthesizes it by the synthesizer 26 to create video data that can be displayed by the video output unit 27, and displays it on the display device 60.
Further, the CPU 33 acquires the missing start time and the missing end time in the missing information, and simultaneously starts the time measurement.

As the display contents, for example, "5 minutes from 12:00 to 12:05, based on missing information and time measurement,
Could not record due to radio interference. Currently, 1 minute has passed, so it will take 4 minutes to return to normal playback. If such a display is made, the viewer can easily determine the missing content, and eliminate the anxiety and discomfort.

When it is determined that the time corresponding to the missing period has elapsed, the generation of the interpolation stream in the missing period is stopped, and at the same time, the recording control unit 50b is instructed of the sector position when the recording is restarted, and the recording unit 50a The output of the P-TS after the end of the missing period is restarted. As a result, the video information after the missing period is restarted and the normal reproduction is started. Also,
When the viewer inputs a request to skip by viewing the display screen from the user input unit 35, the generation of the interpolation stream in the missing period is stopped regardless of the elapse of the time corresponding to the missing period, and at the same time, the same as above. An operation is performed to restart the output of the P-TS after the missing period from the recording unit 50a and shift to normal reproduction.

If an interpolation stream is created in the missing information, the recording control section 50b is instructed of the start sector number and the end sector number, and the recording section 50a outputs the interpolation stream between them. TS decoder 22
Through the video decoder 24, the video output unit 27 creates interpolation data and outputs it to the display device 60. Also in this case, if the viewer requests to skip by viewing the display screen, the viewer inputs the instruction through the user input unit 35, and based on this signal, the CPU 33 causes the recording control unit 50b.
Is operated to stop the output of the interpolation stream, indicate the sector position when the recording is restarted, and restart the output of the P-TS after the missing period from the recording unit 50a. By performing the operation described above, even if a dropout occurs during reception, the playback does not occur like a rapid progress in the dropout portion as in the conventional case during playback, and the viewer does not feel uncomfortable. In addition, since it can be recognized that there is a dropout, an operation such as skipping can be performed.

In the present embodiment, the receiving section, the recording / reproducing apparatus, the display apparatus, and the audio output apparatus have been described as being separately configured, but these are integrated and the whole is integrated.
It may be in the form of one digital broadcast receiving device. In this case, the function of the recording control unit in the recording / reproducing apparatus may be performed by the CPU in the receiving unit. In addition, IE
Although the description has been made in the form in which the IEEE 1394 control unit is added, the present invention may be in a form in which the IEEE 1394 control unit is not provided.

Further, in the present invention, the missing portion is displayed based on the complementary data for a period corresponding to the missing period, but the missing portion may be complemented when rebroadcasting is performed. In this case, the sector position information in which the supplemented stream is recorded and the length information thereof are inserted in the missing information, and when the reproducing operation reaches the missing portion, the sector position information and the length information are read. ,
When the stream at that position is played back and the playback of the complementary stream is completed, the stream playback after the missing portion is resumed, and it is possible for the viewer to recognize that there is no missing.

[0037]

The digital receiver of the present invention comprises a receiving section for receiving a digital broadcast signal and restoring it to a desired stream signal, and a recording / reproducing apparatus for inputting and recording at least a part of this signal. In a system including a video display device and an audio output device, a recording / reproducing device detects a loss of a stream signal during recording and determines a loss time, and outputs a loss information signal corresponding to the loss time. When the generated information is recorded on the recording / reproducing apparatus and reproduced, the missing portion of the stream signal is displayed based on the time missing information signal corresponding to the missing time.

As a result, even if there is a missing portion when the broadcast recorded in the recording / reproducing apparatus is reproduced, the reproduction that suddenly progresses in time does not occur, so that it can be viewed without any discomfort.
In addition, since the viewer can quickly recognize that there is a gap, it is easy to give a skip instruction, and in this case, even if there is a playback that suddenly advances in time, it is instructed by itself, so it feels strange. It has a great effect that it can provide a digital receiver which is easy to operate without being remembered.

[Brief description of drawings]

FIG. 1 is a block diagram of a digital receiver according to an embodiment of the present invention.

FIG. 2 is a block diagram of a main part for explaining an operation when recording is performed on the recording / reproducing apparatus by the digital receiver according to the embodiment of the present invention.

FIG. 3 is a TS recording image diagram when recording missing information in a recording / reproducing apparatus with a digital receiver according to an embodiment of the present invention.

FIG. 4 is a block diagram of a main part for explaining an operation when reproducing a record having missing information in the digital receiver according to the embodiment of the present invention.

[Explanation of symbols]

10 antennas 20 Receiver 21 tuner 22 TS decoder 23,50c memory 24 video decoder 25 audio decoder 26 Composition Department 27 Video output section 28 Audio output section 29 IEEE 1394 control unit 31 VRAM 32 control means 33 CPU 34 Program memory 35 User Input Section 36 Digital I / F 50 Recording / reproducing device 50a recording unit 50b Recording control unit 60 display device 62 audio output device

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5C025 AA30 BA14 BA27 BA28 CA02                       CA19 CA20 CB10 DA01 DA10                 5C053 FA20 GB11 GB15 HA21 HA33                       HB04 JA01 JA12 LA06                 5C059 RF01 RF07 RF09 SS11 SS20                       SS26 SS30 UA05 UA38 UA39

Claims (8)

[Claims] 1. A receiving unit that receives a digital broadcast signal and restores it to a desired stream signal; and a recording unit that is connected to the receiving unit and inputs and records and reproduces at least a part of the stream signal restored by the receiving unit. A digital broadcast receiving system including a recording / reproducing device that performs the above, a display device that displays an image based on a data signal from the receiving unit, and an audio output device that outputs audio, wherein the receiving unit is a recording / reproducing device. Detecting that a dropout has occurred during recording of the stream signal and determining the dropout time, generating a dropout information signal corresponding to the dropout time, causing the recording / playback apparatus to record the dropout information signal, and playing it back. Sometimes the missing part of the stream signal has a time corresponding to the missing time, and at least one of video and audio based on the missing information signal. Is output by the display device and the audio output device. 2. The receiving unit cannot correct, at a predetermined frequency, the received digital broadcast signal in the error correction unit of the receiving unit that a dropout occurs during recording of the stream signal in the recording / reproducing apparatus. The digital broadcast receiving system according to claim 1, wherein the digital broadcast receiving system is detected when an error occurs. 3. The recording / reproducing apparatus stores the last recorded sector position in a memory when recording a stream signal, and when power is supplied to the digital broadcast receiving system, the receiving section is operated by the recording / reproducing apparatus. The digital broadcast receiving system according to claim 1 or 2, wherein the recording data at the sector position recorded in the memory is read to detect that the stream signal is lost during recording. 4. The missing information signal is recorded with at least one selected from a missing occurrence time, a time at which reception is normally resumed, recording target service information, a complementary stream start sector number, a complementary start sector end sector number, and a missing factor. The digital broadcast receiving system according to claim 1, wherein the digital broadcast receiving system is provided. 5. The receiving unit further comprises a user input unit, and at the time of reproducing based on the stream signal recorded in the recording / reproducing apparatus, at least one of video and audio based on the missing information signal is displayed or audio in the missing portion. When output to the output device, the viewer operates the user input unit so that the receiving unit interrupts the output based on the missing information signal, and the stream signal recorded in the recording / reproducing device after the missing recovery. The digital broadcast receiving system according to any one of claims 1 to 4, wherein 6. The receiving unit has a control unit including a processor that executes in accordance with a program, a program memory that stores a program for operating the processor, and a program for operating the processor. By the processor reading the program and executing a predetermined operation, the recording / reproducing apparatus detects a loss during recording of the stream signal, determines a loss time, and a loss information signal corresponding to the loss time. And a program for performing recording of the missing information signal on the recording / reproducing apparatus and outputting of video or audio based on the missing information signal for a time corresponding to the missing time for the missing portion of the stream signal during reproduction. The digital broadcast according to any one of claims 1 to 5, wherein the digital broadcast is provided. Receiving system. 7. A receiving unit for receiving a digital broadcast signal has at least a processor that executes according to a program and a control unit that includes a program memory that stores a program for operating the processor, and is connected to the receiving unit. A recording / reproducing apparatus for inputting and recording at least a part of the stream signal restored by the receiving section and reproducing the recorded stream signal; and a display apparatus for displaying an image based on the data signal from the receiving section, A program for controlling and processing a digital broadcast receiving system including an audio output device for outputting audio, wherein the processor is configured to detect a loss of the stream signal, and determine a loss time,
Generation of a missing information signal corresponding to the missing time, recording of the missing information signal in the recording / reproducing device, and time or video corresponding to the missing time of the missing portion of the stream signal at the time of reproduction, video or audio based on the missing information signal. A program for causing the display device to output. 8. A machine-readable storage medium storing the program according to claim 7.