JPH11112897A - Digital broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To judge whether or not a bit stream to be recorded can be recorded in a recording medium in terms of a capacity. SOLUTION: A transport stream PID filter/section filter 2 outputs video data, audio data and section data which are display control information specified in a system control circuit 4 from input transport stream signals 101. The system control circuit 4 obtains the capacity 104 of the bit stream to be recorded from a bit stream capacity for each program in the section data stored in a section data storage part 8 and inputs it to a transport stream residual amount judgement processing circuit 5. Also, a recording medium equipment control circuit 6 performs communication with a recording medium equipment, obtains the free capacity of the recording medium and inputs the free capacity signals 113 to the transport stream residual amount judgement processing circuit 5. The transport stream residual amount judgement processing circuit 5 compares the capacity 104 of the bit stream with the free capacity signals 113 and judges whether or not the entire bit stream to be recorded can be put in the recording medium.

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 apparatus for receiving a digital broadcast.

[0002]

2. Description of the Related Art At present, digital broadcasting for transmitting and receiving digital data has been started. VCRs (Video Cassette Recorders), digital video discs, and the like, which can record the broadcast programs in the form of digital signals, are being put into practical use, and these have enabled high-quality recording and reproduction.

Here, such a digital signal is represented by MP
Since compression such as the EG method is performed, the bit stream capacity of the program depends on the bit rate at the time of encoding.

Therefore, in order to digitally record a program, recording has been performed using a recording medium having a certain capacity. FIG. 7 shows the operation from digital reception to recording.

First, an input digital signal is input in the form of a transport stream 101.
The transport stream is a bit stream format for multiplexing and transmitting a plurality of video, audio, and other additional data, and is standardized in the MPEG system.

The MPEG system is described in, for example, "ISO / IEC 13818-1 Internet
onal Standard ". And the input transport stream 10
1 is input to the transport stream decoding circuit 1. This circuit comprises a transport stream PID filter and section filter 2 described below, a system control circuit 4, and a section data storage section 8.

First, the transport stream 101
Is input to the transport stream PID filter and the section filter 2, and the EPG (Electri
c Program Guide), section data 102 including display control information on a program selected by the user, a bit stream of video data, and a bit stream of audio data.

Here, PID (Packet Iden)
“tifier” indicates an ID of video data, an ID of audio data, and an ID unique to other data. The section data is display control information such as program information (including the end time and the current time of the program) and stream information. Regarding these bit stream formats, for example, “ARI
B STD-B10 ".

Here, this transport stream P
The ID filter and the section filter 2 are controlled by a system control circuit 4 which receives user requests and the like. Next, the bit stream of the video data and the bit stream of the audio data are input to the MPEG decoding circuit 3, where the video and audio are decoded, and the output signal 106 is obtained.

On the other hand, the digital recording bit stream is selected by the recording transport stream PID filter 7, and its output signal 108 is output to the digital recording medium device. Further, a control signal 110 for selecting a bit stream to be recorded is provided from the system control circuit 4.

The above is the operation of recording a conventional digital signal. However, the following problem will occur if the operation is performed as it is. That is, since the bit rate of the bit stream to be recorded is not known at all, the remaining amount of the bit stream is not known, and it is unclear whether the bit stream can fit on the recording medium.

[0012]

As described above, as described above,
In the conventional digital broadcast receiving apparatus, there is a problem that it is not known whether or not it is possible to record on a recording medium in terms of capacity since the remaining amount of the bit stream to be recorded is not known.

It is therefore an object of the present invention to provide a digital broadcast receiving apparatus capable of determining whether a bit stream to be recorded can be recorded on a recording medium in a capacity-wise manner. Another object of the present invention is to provide a digital broadcast receiving apparatus capable of displaying the remaining amount of a bit stream to be recorded.

[0014]

Means for Solving the Problems (First Configuration Example) In a digital broadcast receiving apparatus for receiving digital broadcast, a transport stream is
Transport stream decoding processing means for dividing at least video data, audio data, and section data as display control information; decoding means for decoding the video data and the audio data; and a transport stream to be recorded. Recording stream PID filter means, recording medium device control means for controlling a recording medium device for recording the selected transport stream, and the section data of the output of the transport stream decoding means. The bit stream capacity of the program is obtained and compared with the free space of the recording medium of the recording medium device obtained by the recording medium device control means, and whether or not the selected transport stream can be recorded on the recording medium is determined. Transport stream remaining to be determined Constant processing means, a remaining amount determination display generating means for generating display data indicating a determination result of the transport remaining amount determining processing means, and a display for displaying the display data, I do.

(Second configuration example) In a digital broadcast receiving apparatus for receiving digital broadcast, a transport stream decoding processing means for dividing a transport stream into at least video data, audio data, and section data as display control information; Decoding means for decoding the video data and the audio data; recording transport stream PID filter means for selecting a transport stream to be recorded; and bits for measuring a bit rate of the selected transport stream. Rate measurement processing means, the end time and the current time of the program in the section data output from the transport stream decoding means, and the bit rate measurement value from the bit rate measurement processing means, Transport stream remaining amount calculation processing means for calculating the amount, remaining amount display generating means for generating display data indicating the remaining amount of the transport stream, and a display for displaying the remaining amount display data. It is characterized by having.

(Third Configuration Example) In a digital broadcast receiving apparatus for receiving digital broadcast, a transport stream decoding processing means for dividing a transport stream into at least video data, audio data, and section data as display control information; Decoding means for decoding the video data and the audio data; recording transport stream PID filter means for selecting a transport stream to be recorded; and bits for measuring a bit rate of the selected transport stream. Rate measurement processing means, recording medium equipment control means for controlling the recording medium equipment for recording the selected transport stream, and the end time of the program in the section data of the output of the transport stream decoding means and Current time And the bit rate measurement value from the bit rate measurement processing means, calculates the remaining amount of the selected transport stream, and calculates the remaining amount of the transport stream and the recording medium acquired by the recording medium device control means. A transport stream remaining amount determination processing unit that determines whether or not the selected transport stream can be recorded on the recording medium by comparing with a free space of a recording medium of the device; and a determination result of the transport remaining amount determination processing unit. And a display for displaying the display data.

[0017]

FIG. 1 shows the configuration of a digital broadcast receiving apparatus according to a first embodiment of the present invention. In the configuration of FIG. 1, the input transport stream signal 1
No. 01 is processed by the transport stream decoding circuit 1, the MPEG decoding circuit 3, and the recording transport stream PID filter 7, as in FIG. 7 shown in the conventional example.

That is, from the input transport stream 101, a bit stream of video data, a bit stream of audio data, and a section data (display information such as program information and stream information) specified by the system control circuit 4 are displayed. ) To get. Bit stream of video data and bit stream of audio data 1
03 is decoded by the MPEG decoding circuit 3. The section data 102 is temporarily stored in the section data storage unit 8 and used for display control and the like as needed.

Next, the capacity 104 of the bit stream to be recorded is obtained from the bit stream capacity of each program in the obtained section data in the section data storage unit 8 and the transport stream remaining amount determination processing circuit 5 To enter.

Further, the recording medium device control circuit 6 communicates with a recording medium device (not shown) to acquire the free space 107 of the recording medium, and transmits the free space signal 113 to a transport stream remaining amount determination processing circuit. 5 is input.

The transport stream remaining amount determination processing circuit 5 compares the bit stream capacity 104 with the free space signal 113 of the recording medium to determine whether the bit stream to be recorded can be stored in the recording medium. Then, a binary free space determination signal 105 is output.

The remaining amount determination display generation circuit 11 determines whether or not recording is possible on a recording medium based on the free space determination signal 105, generates a character string or image for display, and determines it on the display 13. Display the result. For example, the display 13 indicates that the bit stream to be recorded can or does not fit on the recording medium.

The system control circuit 4 receives an external signal 120 such as a user request, and controls the transport stream remaining amount determination processing circuit 5 and the recording medium device control circuit 6.

More specifically, the transport stream remaining amount determination processing circuit 5 inputs the PID of the bit stream to be recorded and the data for obtaining the section data as the control signal 111, and outputs the bit of the section data corresponding to the control signal 111. The stream capacity 104 is obtained from the section data storage unit 8.

When it is desired to obtain the free space 107 of the recording medium, the command signal 1
12 and controls the recording operation itself of the recording medium device.

Further, the system control circuit 4 obtains a desired bit stream for recording by giving the PID 110 of the bit stream to be recorded to the recording transport stream PID filter 7.

By the above processing, it is possible to determine whether or not the bit stream to be recorded can be recorded on the recording medium and to display the bit stream.

FIG. 2 shows the configuration of a digital broadcast receiving apparatus according to a second embodiment of the present invention.

In this embodiment, an example is shown in which, when the bit stream capacity for each program is not described in the section data, the remaining bit stream of the program to be recorded is calculated and displayed.

In order to realize this operation, the output signal 108 of the recording transport stream PID filter 7 is input to the bit rate measurement processing circuit 8 in FIG. The bit rate measurement processing circuit 8 measures the bit rate of the transport stream to be recorded, and inputs the bit rate value 114 to the remaining transport stream calculation processing circuit 9.

In order to realize this operation, the system control circuit 4 supplies a high-level control signal, for example, to the bit rate measurement processing circuit 8 at each time interval to be measured.

In the section data stored in the section data storage section 8, the end time and the current time 116 of the program are input to the transport stream remaining amount calculation processing circuit 9.

The transport stream remaining amount calculation processing circuit 9 calculates the remaining amount of the bit stream of the program from the bit rate value 114 to be recorded, the program end time and the current time 116, and outputs the remaining amount signal 115. .

The remaining amount display generation circuit 12 outputs the remaining amount signal 1
A character string or image for displaying the remaining amount is generated based on No. 15 and displayed on the display 13.

With the above processing, the remaining amount of the bit stream to be recorded can be displayed.

FIG. 3 shows a digital broadcast receiving apparatus according to a third embodiment of the present invention.

In this embodiment, similarly to the embodiment of FIG. 2, the bit rate of the bit stream to be recorded is measured, and the free space of the recording medium is obtained by the recording medium device control circuit 6 shown in FIG. In this embodiment, it is determined whether or not a bit stream to be recorded can fit on a recording medium.

That is, the bit rate of the output signal of the recording transport stream PID filter 7 is measured by the bit rate measurement processing circuit 8 and the bit rate value 114
Is input to the transport stream remaining amount determination processing circuit 10.

The recording medium device control circuit 6
The free space 107 of the recording medium is obtained, and the free space value 113 is input to the transport stream remaining amount determination processing circuit 10.

The remaining transport stream determination processing circuit 10 determines the remaining bits of the program from the bit rate value 114 and the end time and current time 117 of the program in the section data stored in the section data storage unit 8. The stream capacity is calculated, the bit stream capacity is compared with the free space value 113 of the recording medium, and it is determined whether the bit stream to be recorded can be accommodated in the recording medium. Is output.

Based on the free space determination signal 118, the remaining amount determination display generation circuit 11 determines whether recording is possible on a recording medium, generates a character string or image for display, and displays the determination result on the display 13. Is displayed. For example, the display 13 indicates that the bit stream to be recorded can or does not fit on the recording medium.

In order to realize these operations, the system control circuit 4 performs the same control as in the embodiment of FIGS. 1 and 2 by using the transport stream PID filter, the section filter 2, the recording medium device control circuit 6, The recording transport stream PID filter 7, the bit rate measurement processing circuit 8, and the transport stream remaining amount determination processing circuit 10 are provided.

By the above processing, it is possible to determine whether or not the bit stream to be recorded can be recorded on the recording medium and to display the bit stream.

Here, in addition to the binary free space determination signal, the transport stream remaining amount determination processing circuit shown in FIG. 1 and FIG. An output configuration is also conceivable. In this case, the remaining amount determination display generation circuit 11 also generates data indicating the free space of the recording medium or the insufficient capacity, and displays the data on the display 13.

Further, if there is not enough free space on the recording medium, the transport stream remaining amount determination processing circuit 10 generates confirmation display data as to whether to overwrite already recorded data. Then, the system control circuit 4 acquires the user confirmation signal 120 selected by the user, and then causes the recording medium device control circuit 6 to perform recording control.

FIG. 4 shows an example in which the bit rate measurement processing circuit 8 in FIGS. 2 and 3 is embodied.

First, the bit stream 108 to be recorded is input to the comparison circuit 50. The comparison circuit 50 compares a comparison reference value 156 such as a synchronization byte of a transport stream from the comparison reference value circuit 56 with the input signal 108, and outputs a binary signal 150 which becomes a high level only when they match. Is output.

Next, the binary signal 150 is input as a clock signal of the counter circuit 51. Further, a control signal 110 which becomes high level for one clock time at a certain time interval from the system control circuit 4 is input as a reset signal of the counter circuit 51, and the counter circuit 51 is reset at a certain time interval. I do.

The counter output value 151 counted within this certain time is input to the terminal 1 of the selection circuit 53 and the comparison circuit 52. The comparison circuit 52 uses the output signal 154 of the latch circuit 54 at the subsequent stage as another input signal, and outputs a larger value of the two input signals to input to the terminal 2 of the selection circuit 53.

The selection circuit 53 is controlled by a control signal 155 input from the system control circuit 4. When the terminal 1 is selected, the counter circuit 151 outputs the counter value 151 being measured and the terminal 2
If you select, the largest counter value 1
52 is output.

That is, the control signal 155 to the selection circuit 53 allows the user to select whether to output the currently received bit rate or to output the maximum bit rate so far. However, there may be a case where it is not necessary to output the maximum bit rate so far, and in such a case, there may be a configuration in which the selection circuit 53 is omitted.

The output signal 15 of the selection circuit 53
3 is input, and the control signal 110 is input to the latch circuit 54 as an enable signal. This latch circuit 54
Latches and outputs an input signal only when the control signal 110 is at a high level. And this latch circuit 5
The counter value 154, which is the output signal of No. 4, is input to the bit rate conversion circuit 55, and the bit rate value 114 is output.

By the above processing, the bit rate value 114 of the bit stream to be recorded can be calculated.

FIG. 5 shows a specific example of the transport stream remaining amount calculation processing circuit 9 shown in FIG. That is, the program end time 160 and the current time 161 in the section data stored in the section data storage unit 8 and the bit rate value 114 are input signals. And the subtractor 6
1 subtracts the current time 161 from the program end time 160. Then, the multiplier 63 multiplies the output signal 162 of the subtracter 61 by the bit rate value 114 and outputs a remaining bit stream value 115 of the program.

FIG. 6 shows a specific example of the remaining transport stream determination processing circuit 10 shown in FIG. That is, the program end time 160 and the current time 161, the bit rate value 114, and the recording medium free space signal 113 in the section data 8 are input signals. Then, the subtracter 61 subtracts the current time 161 from the program end time 160 as in the transport stream remaining amount calculation processing circuit 9 shown in FIG. Then, the multiplier 63 multiplies the output signal 163 of the subtracter by the bit rate value 114 and outputs a remaining bit stream value 115 of the program. Further, the bit stream remaining amount value 115 is compared with the recording medium free space signal 113 by the comparison circuit 65, and a binary signal 118 is output.

By the above processing, the remaining amount of the bit stream to be recorded can be compared with the free space of the recording medium.

(Supplementary Note) (1) The bit rate measurement means determines that the input signal of the bit rate measurement processing means matches the synchronization signal of the transport stream packet, and outputs a predetermined level signal only during that period. A comparison unit, a counter unit that uses an output of the comparison unit as a clock signal, and a binary signal input from the system control unit at a certain time interval as a clear signal, Selection means controlled by a control signal input from the system control means, latch means to which an output signal of the selection means is input and the clear signal is an enable signal, and an output of the latch means is a bit rate value A bit rate conversion means for converting the output from the latch means; and an output from the counter means circuit. Digital broadcasting receiver according to any one of claims 5 or 6, characterized in that and comparator means for the other input of the selection means the larger value by comparing the.

(2) The transport stream remaining amount calculation processing means includes a subtraction means for subtracting a current time from a program end time in the section data output from the transport stream decoding means, and an output of the subtraction means. 6. The digital broadcast receiving apparatus according to claim 2, further comprising a multiplying means for multiplying the bit rate measurement value from said bit rate measuring processing means.

(3) The transport stream remaining amount determination processing means subtracts a current time from a program end time in the section data output from the transport stream decoding means, and outputs the subtraction means. Multiplying means for multiplying the bit rate measurement value from the bit rate measurement processing means, and comparing means for comparing the output of the multiplying means with the free space signal of the recording medium from the recording medium device control means. 7. The digital broadcast receiving apparatus according to claim 3, wherein the digital broadcast receiving apparatus is a digital broadcast receiving apparatus.

(4) The remaining capacity determination display generating means, based on the output of the transport stream remaining capacity determination processing means, displays the free space indicating data of the recording medium when the capacity can be recorded on the recording medium. The digital broadcast receiving apparatus according to (3), wherein, when the capacity is not recordable on the recording medium, display data for displaying the insufficient capacity is generated.

(5) When the transport stream remaining amount determination processing means determines that the bit stream cannot be recorded on the recording medium in a capacity manner, the remaining amount determination display generating means already stores the bit stream in the recording medium. By generating confirmation display data as to whether or not to overwrite the recorded data, the system control means obtains a user confirmation signal as to whether or not to overwrite, and by controlling the recording medium device control means, 7. The digital broadcast receiving apparatus according to claim 4, wherein the recording medium device control means controls the recording medium device.

[0062]

As described above, according to the present invention, it is possible to determine whether a bit stream to be recorded can be recorded on a recording medium in a capacity-wise manner. Further, according to the present invention, it is possible to display the remaining amount of the bit stream to be recorded.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a digital broadcast receiving apparatus according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a digital broadcast receiving apparatus according to a second embodiment of the present invention.

FIG. 3 is a block diagram illustrating a configuration of a digital broadcast receiving apparatus according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a specific example of the bit rate measurement processing circuit 8 of FIGS. 2 and 3;

FIG. 5 is a diagram showing a specific example of a transport stream remaining amount calculation processing circuit 9 of FIG. 2;

6 is a diagram illustrating a specific example of a transport stream remaining amount determination processing circuit 10 of FIG. 3;

FIG. 7 is a diagram showing a configuration of a conventional digital broadcast receiving device.

[Explanation of symbols]

1 ... Transport stream decoding circuit, 2 ...
-Transport stream PID filter, section filter, 3 ... MPEG decoding circuit, 4 ... system control circuit, 5, 10 ... transport stream remaining amount determination processing circuit, 6 ... recording medium device control Circuit, 7: PID filter for recording transport stream, 8: Section data storage unit, 9: Circuit for calculating remaining amount of transport stream, 12 ...
Remaining amount display generation circuit, 13, display, 50, 5
2 ... Comparator circuit, 51 ... Counter circuit, 53 ...
A selection circuit, a latch circuit, a bit rate conversion circuit, a subtractor, a multiplier, and a comparison circuit.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 5/781 H04N 5/781 510K 7/08 7/08 Z 7/081

Claims (6)

[Claims] 1. A digital broadcast receiving apparatus for receiving a digital broadcast, comprising: a transport stream decoding processor for dividing a transport stream into at least video data, audio data, and section data as display control information; Decoding means for decoding the audio data; recording transport stream PID filter means for selecting a transport stream to be recorded; and recording medium equipment for recording the selected transport stream. Recording medium device control means, and acquiring the bit stream capacity of the program in the section data of the output of the transport stream decoding means, and freeing the recording medium of the recording medium device obtained by the recording medium device control means. Compare with capacity and select Transport stream remaining amount determination processing means for determining whether or not the transport stream obtained can be recorded on the recording medium, and remaining amount determination for generating display data indicating the determination result of the transport remaining amount determination processing means A digital broadcast receiving apparatus comprising: a display generating unit; and a display for displaying the display data. 2. A digital broadcast receiving apparatus for receiving a digital broadcast, comprising: a transport stream decoding processor for dividing a transport stream into at least video data, audio data, and section data as display control information; Decoding means for decoding the audio data; recording transport stream PID filter means for selecting a transport stream to be recorded; bit rate measurement processing means for measuring a bit rate of the selected transport stream; Calculating the remaining amount of the selected transport stream from the end time and the current time of the program in the section data output from the transport stream decoding means and the bit rate measurement value from the bit rate measurement processing means. Transport stream remaining amount calculation processing means, remaining amount display generating means for generating display data indicating the remaining amount of the transport stream, and a display for displaying the remaining amount display data. Digital broadcast receiver characterized by the following. 3. A digital broadcast receiving apparatus for receiving a digital broadcast, comprising: a transport stream decoding processor for dividing a transport stream into at least video data, audio data, and section data as display control information; Decoding means for decoding the audio data; recording transport stream PID filter means for selecting a transport stream to be recorded; bit rate measurement processing means for measuring a bit rate of the selected transport stream; Recording medium device control means for controlling a recording medium device for recording the selected transport stream; end time and current time of a program in the section data of the output of the transport stream decoding means; Bi The remaining amount of the selected transport stream is calculated from the bit rate measurement value from the bit rate measurement processing unit, and the remaining amount of the transport stream and the recording medium of the recording medium device obtained by the recording medium device control unit. Transport stream remaining amount determination processing means for determining whether or not the selected transport stream can be recorded on the recording medium, and display data indicating the determination result of the transport remaining amount determination processing means And a display for displaying the display data. 4. The transport stream decoding unit includes: a transport stream PID filter unit and a section filter unit for acquiring at least the video data, the audio data, and the section data; and the transport stream PID filter unit. And section data storage means for storing the section data from the section filter means, the transport PID filter means and section filter means, the transport stream PID filter means for recording, the transport stream remaining amount determination processing circuit, 2. The digital broadcast receiving apparatus according to claim 1, further comprising system control means for controlling a recording medium device control means. 5. The transport stream decoding unit includes: a transport stream PID filter unit and a section filter unit for acquiring at least the video data, the audio data, and the section data; and the transport stream PID filter unit. And section data storage means for storing the section data from the section filter means, the transport stream PID filter means and section filter means, the transport stream remaining amount calculation processing means, and the recording transport stream PID filter means. 3. The digital broadcast receiving apparatus according to claim 2, further comprising system control means for controlling said bit rate measurement processing means. 6. The transport stream decoding processing means, wherein the transport stream decoding processing circuit comprises: a transport stream PID filter means and a section filter means for acquiring at least the video data, the audio data, and the section data; Section data storage means for storing the section data from the transport stream PID filter means and section filter means; the transport stream PID filter means and section filter means; the recording transport stream PID filter means; A system control unit for controlling the bit rate measurement processing unit, the recording medium device control unit, and the transport stream remaining amount determination processing unit; Digital broadcasting receiver according to claim 3, characterized.