JPH11275475A - Digital broadcast receiving method and digital broadcast recording and/or reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a large number of functions while maintaining convenience by disabling the selection of the channel of a digital broadcast receiver when no digital broadcast signal is inputted to the receiver. SOLUTION: It is set or detected whether a digital broadcasting antenna 101 is connected or not, and when the antenna is connected, tuning of digital broadcasting is possible, but when the antenna is not connected, tuning is performed except for digital broadcasting. Therefore, in the case of tuning while using the up/down key of a channel when the antenna is connected, tuning is performed in the order of ground wage, BS, digital broadcasting and ground wave, but when the antenna is not connected, tuning can be performed in the order of ground wave, BS and ground wave. Thus, when no digital broadcasting signal is inputted, tuning of the channel of the digital broadcast receiver can not be conducted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital video signal receiving method and a recording and / or reproducing method for receiving, recording and / or reproducing digital video signals.
More particularly, the present invention relates to a digital video signal receiving method and a recording and / or reproducing method for receiving, recording and / or reproducing a digital compressed video signal.

[0002]

2. Description of the Related Art Digital broadcasting using satellites has been put to practical use. On the transmitting side, the video signal and the audio signal compressed by a compression method such as MPEG are converted into a packet format digital signal, which is multiplexed on a plurality of channels and transmitted. The digital broadcast receiver on the receiving side realizes a high-quality multi-channel program service by selecting only the packets of the selected channel and expanding the video signal and the audio signal. At present, a service of 100 channels or more has been realized, and services such as program information, pay broadcasting, and e-mail are provided in addition to video and audio. The program information is to transmit the title, broadcast time and detailed information of the program as digital information and display the program guide on the digital broadcast receiver, and the user selects the program in the program guide without pressing the channel number. You can tune in just by yourself. In a pay-broadcasting service, an IC card and a telephone are built in a digital broadcast receiver, so that user management can be performed finely and a viewing fee can be collected for each program. In an electronic mail, for example, information such as a viewing fee for each user can be converted into a digital signal from the transmitting station and sent, and can be displayed on a digital broadcast receiver. As described above, digital broadcasting realizes multifunctional services not available in analog broadcasting.

On the other hand, as a technique for digitally recording and reproducing these digital broadcasts, there is a technique described in Proceedings of 1997 Annual Conference of the Institute of Image Information and Television Engineers, pp. 78-79. By using this technology, high-quality digital broadcasts can be recorded and reproduced in digital form, and at the same time, compatibility with conventional analog video can be maintained.

[0004]

As in the case of a BS tuner built in a VTR, an integrated VTR combining the digital broadcast receiver described in the above-mentioned prior art and a digital recording / reproducing function can be considered. However, in digital broadcasting, various services and functions not provided by analog broadcasting are realized, and the digital recording / reproducing function also supports them. For this reason, it is a challenge in realizing an integrated VTR to simplify many functions without compromising the usability of the conventional VTR and to combine them in an easy-to-understand manner.

An object of the present invention is to provide a new digital broadcast receiving method and a digital broadcast recording and / or reproducing method which solve the above problems.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus provided with a receiver for digital broadcasting, BS broadcasting, and terrestrial broadcasting by recognizing connection / disconnection of a digital broadcasting antenna terminal to select digital broadcasting. It can be realized by controlling the station operation.

In addition to the packet selecting means for selecting a packet to be decoded, a packet to be output to the digital signal bus is selected and output to the digital broadcast receiver. This can be realized by providing an interface means for outputting to the means.

An automatic digital recording mode in which digital recording is automatically performed when a digital broadcast or a digital input / output terminal is selected and a recording operation is performed on a digitally recordable recording medium. By providing an analog recording mode for performing analog recording, selection between digital recording and analog recording can be easily realized.

[0009] Further, when program information transmitted by digital broadcasting is extracted and program reservation is performed using the same, if a recordable recording medium is set, recording reservation can be performed at the same time. .

Further, the present invention can be realized by extracting time information transmitted by digital broadcasting and using the extracted time information to control the time of programmed recording of the recording / reproducing apparatus.

[0011] Further, the present invention can be realized by using a digital broadcast mail function to display a malfunction when a malfunction that occurs during recording and reproduction of a digital broadcast is detected.

Further, when performing variable speed reproduction during digital reproduction, it can be realized by outputting the immediately preceding video frame as a still image and outputting it.

When performing variable-speed playback during digital playback, variable-speed playback data is detected. If no variable-speed playback data is detected, the last video frame immediately before is output as a still image and output. realizable.

[0014]

Embodiments of the present invention will be described below with reference to the drawings based on embodiments.

FIG. 1 shows an example of the configuration of an integrated VTR incorporating a digital broadcast receiver and a digital signal recording / reproducing device. In FIG. 1, 100 indicates the whole, 101 indicates a digital broadcast antenna, 102 indicates a satellite broadcast antenna,
3 is a terrestrial antenna, 104 is a digital tuner, 1
05 is a BS tuner, 106 is a terrestrial tuner, 107
Is a switching circuit, 108 is a digital recording / reproducing circuit, 109
Is an analog recording / reproducing circuit, 110 is a switching circuit, 110 is a recording medium, 112 is a switching circuit, 113 is a system controller, 114 is an interface circuit, and 115 is a receiver.

First, the basic operation of the analog VTR will be described. During recording, digital tuner 104, BS
The switching circuit 107 selects an analog video signal and an audio signal of the tuner 105 and the terrestrial tuner 106, and outputs the analog video signal and the audio signal to the analog recording / reproducing circuit 109 and the switching circuit 112. Here, the channel selection operation will be described. When selecting digital broadcasting, BS broadcasting, or terrestrial broadcasting, digital broadcasting cannot be received or not received if the digital broadcasting antenna 101 is not installed or a digital broadcasting reception contract is not signed. There are cases. Since digital broadcasting has a significantly larger number of channels and takes longer to select a channel, if a user selects a channel by mistake when digital broadcasting is not received, the user knows that the channel cannot be selected, It is troublesome to wait until the result that the station cannot be obtained.

In such a case, as shown in FIG.
01 detects or sets the presence / absence of the connection of the digital broadcast antenna 101. If there is an antenna connection, it is possible to select a digital broadcast in step 502. If there is no antenna connection, in step 503 the digital broadcast is selected. Select a channel other than. By doing so, when selecting a channel using the up / down key of the channel, if there is an antenna connection, select in the order of terrestrial, BS, digital broadcast, terrestrial, and if there is no antenna connection,
You can tune in the order of terrestrial, BS, and terrestrial. Furthermore, the same effect can be obtained for a digital broadcast receiver that receives a plurality of digital broadcasts by controlling channel selection according to conditions such as antenna connection and reception contract as described above.

The analog recording / reproducing circuit 109 performs signal processing for recording an analog signal,
0 is recorded on the recording medium 111. At this time, the receiver 1
The switching circuit 107 and the switching circuit 112 can receive a video signal being recorded or another video signal. At the time of reproduction, a signal from the recording medium 111 is transmitted to the analog recording / reproduction circuit 109 via the switching circuit 110.
And performs a reproduction signal process, outputs an analog video signal and an audio signal to the switching circuit 112, and sends it to the receiver 115.

Next, before describing the basic operation for performing digital recording, the operation of the digital tuner 104 will be described with reference to FIG. In FIG.
1 is a demodulation circuit, 202 is a packet selection circuit, 203 is I
The F circuit, 204 is a decoder, and 205 is a controller.

A received signal received by the digital broadcasting antenna 101 is demodulated by a demodulation circuit 201 to be converted into a digital signal, which is input to an IF circuit 203. IF circuit 203
Then, at the time of recording, the input digital signal is output as it is to the packet selection circuit 202, and the digital recording / reproducing circuit 108 is selected from among packets of a plurality of programs which are time-division multiplexed as digital recording packets. The video signal and the audio signal packet of the program, the program information and the information indicating the configuration of the packet are selected and output. The packet selection circuit 202 also extracts packets of the video and audio signals of the selected program from among the packets of the plurality of time-division multiplexed programs and sends them to the decoder 204. The program information such as the title of the program and the time information are , Controller 20
Send to 5. As described above, the circuit for selecting the packet is duplicated, but the packet to be digitally recorded, the packet required for the decoder, and the packet required for the controller are different, and the packet selection circuit and the decoder are closely connected. Since the two circuits operate at the same timing, it is easier to construct the system by considering the two circuits, that is, the packet selection circuit and the decoder, as one.

The decoder 204 converts the compressed digital video signal and digital audio signal in the packet into an analog video signal and an analog audio signal.
07. The program information such as the program title sent to the controller 205 is transmitted to the system controller 113.
Multiplexes with video signals while communicating with
5 is displayed. The time information is sent to the system controller 113 through communication, and is set in an internal time counter and used as a clock for program reservation and recording reservation. As a result, the time adjustment that has been performed manually until now becomes unnecessary when digital broadcasting is received. However, when a digital broadcast is not received, the time is manually adjusted as in the conventional case.

In the IF circuit 203, a packet to be digitally recorded is placed on a digital signal bus and sent to the digital recording / reproducing circuit 108. The control of the bus at this time is performed, for example, as shown in FIG. The bus direction is the IF circuit 20 only during playback.
The three inputs are the output of the digital recording / reproducing circuit 108, and the others are the output of the IF circuit 203 and the input of the digital recording / reproducing circuit 108. The recording start process starts after the digital recording / reproducing circuit 108 starts the recording process in step 301.
In step 302, a packet is output from the IF circuit 203 of the digital tuner 104, and digital recording is performed in step 303. Similarly, the recording stop process is performed in step 30.
After the output of the packet from the IF circuit 203 of the digital tuner 108 is stopped in 4, the recording process is stopped in the digital recording / reproducing circuit 108 in step 305. By doing so, packets can be recorded from the first packet to the last packet without missing. As described above, the digital recording / reproducing circuit 10
The digital signal input to 8 is subjected to recording signal processing,
The data is digitally recorded on the recording medium 111 via the switching circuit 110. At this time, a high-performance tape is used for the recording medium 111 to secure an error rate.

Here, FIG. 4 is supposed to simplify the selection between digital recording and analog recording.
In FIG. 4, an automatic digital recording mode is provided to facilitate user selection. In step 401, it is determined whether or not the automatic digital recording mode is ON. If it is ON, in step 402, it is confirmed whether or not the recording target is a digital broadcast. If it is a digital broadcast, the recording medium is checked in step 403, and if the recording medium is a high performance tape, digital recording is performed in step 404. Digital recording is performed only when all of the conditions of steps 401, 402, and 403 are satisfied. If at least one of the conditions is not satisfied, analog recording is performed in step 405. By providing the automatic digital recording mode in this way, the user can select digital recording or analog recording with almost no consciousness. If it is desired to record a digital broadcast in analog on a high-performance tape, the automatic digital recording mode may be turned off.

On the other hand, other than the combination of digital broadcasting and high-performance tape, control for preventing digital recording can prevent erroneous operation of erroneous digital recording. At this time, digital recording can be selected by using a key for selecting a recording speed of, for example, standard, triple, or the like, using an existing key. Further, a dedicated key may be used.

Next, recording reservation will be described. Digital broadcasting has a function for easily reserving a program. This is performed by displaying a program guide from program information sent from a broadcasting station and selecting a desired program by a user.
FIG. 6 shows a procedure for making a recording reservation using this. Whether or not to make a recording reservation depends on whether or not a recordable tape has been detected in step 601. A recordable tape is detected as to whether or not a nail for preventing erroneous erasure has been broken. If a recordable tape is detected in step 601, recording reservation is performed together with program reservation in step 603. If there is no tape or a tape that cannot be recorded is detected in step 601, only program reservation is performed in step 602.

Next, a method of displaying an error message when an erroneous operation has occurred, such as when the recording reservation has not been executed for some reason, will be described. In digital broadcasting,
There is a function to display a message to the user by e-mail, such as changing the contract channel. E-mail messages can be received as program information in digital broadcasts,
You may receive it directly from the telephone line. In each case, a fairly long message can be displayed. Also, because it is an email, you can check the content at any time you want. By using this mail function, if an error message is displayed, it is possible to make it a polite message that is easy for the user to understand.

FIG. 7 is a diagram showing the configuration of the mail circuit, which is composed of a part of the controller 205 inside the digital tuner 104 of FIG. 7, reference numeral 701 denotes a switching circuit; 702, a mail buffer;
Reference numeral 3 denotes a controller. The message from the broadcasting station is written to the mail buffer 702 via the switching circuit 701, and the error message detected by the system controller 113 is written via the controller 703 by communication, and the error message detected by the controller 703 is written to the mail buffer 702 as it is. It is. The message written in the mail buffer 702 is displayed on the screen in the same manner as the method of displaying a mail from a broadcasting station.

Next, digital reproduction will be described. A signal reproduced from the recording medium 111 of FIG.
The signal is input to the digital recording / reproducing circuit 108 via 0, and is subjected to reproduction signal processing to reproduce a packet. The packet is loaded on a digital signal bus and input to the digital tuner 104. At this time, control of the digital signal bus is performed, for example, as shown in FIG. In the reproduction start process, the direction of the digital signal bus is switched in step 801 and the IF of the digital tuner 104 is changed.
The circuit 203 is input and the digital recording / reproducing circuit 108 is output. In step 802, the digital recording / reproducing circuit 1
Data output is started from 08, and digital reproduction is started in step 803. In the reproduction stop processing, step 80
In step 4, the data output of the digital recording / reproducing circuit 108 is stopped, and in step 805, the direction of the digital signal bus is switched to return to the original direction. By controlling in this way, the reproduced first packet can be input to the digital tuner 104. The packet input to the IF circuit 203 is sent to the packet selection circuit 202, packets of video and audio are sent to the decoder 204, and program information is sent to the controller 205. The decoder 204 converts the video signal or audio signal packet into an analog video signal and audio signal.

Here, the variable speed reproduction of the VTR will be described. When a video signal and an audio signal are converted into digital signals, and data is compressed by a method such as MPEG, the track position for recording does not match the position on the screen of the video, and the correlation between frames is used. There are many parts, and video cannot be reproduced even if data is partially processed. For this reason, even if the data is reproduced at variable speed reproduction, it is not possible to display one screen of video. Therefore, when performing variable speed reproduction from normal reproduction, processing such as turning a video into a still image is required. The processing at this time is as shown in FIG. In step 901, it is detected whether variable-speed reproduction or normal reproduction is performed. If variable-speed reproduction is detected, in step 903, for example, a reproduced image is converted into a still image by variable-speed reproduction processing. Step 90 during normal playback
In step 2, a normal reproduced image is output. By performing the switching in this manner, it is possible to display to the user that the variable speed reproduction is being performed.

Further, for example, a display as shown in FIG. 10 may be made. In FIG. 10, reference numeral 1001 denotes a variable speed reproduction symbol, 1002 denotes a time display, 1003 denotes a reproduction mode,
04 indicates a receiver. These displays are output in the screen display mode. However, in the variable speed reproduction of digital reproduction, by displaying the screen regardless of the screen display mode, it is possible to indicate to the user that the variable speed reproduction is being performed. Further, these displays are only examples, and any display indicating that variable speed reproduction is being performed may be used.

Here, in order to perform variable speed reproduction, data for variable speed reproduction may be additionally recorded. In this case, the variable-speed reproduction process in step 903 is, for example, a process as shown in FIG. First, a still image is output in step 1101, and it is detected in step 1102 whether or not variable speed playback data exists. If it is detected, in step 1103, a variable speed playback image is output by variable speed playback processing. If the variable speed reproduction data cannot be detected in step 1101, the output of the still image is continued without performing any processing.
By performing such processing, it is possible to cope with the case where variable speed reproduction data is recorded. The detection of whether or not there is variable speed reproduction data may be performed in advance during normal reproduction, and it may be determined what processing is to be performed during variable speed reproduction. At this time, it may be displayed to the user that variable speed reproduction is possible.

[0032]

According to the digital broadcast receiving method and the digital broadcast recording and / or reproducing method of the present invention, the digital broadcast tuning operation is controlled by recognizing the connection / disconnection of the digital broadcast antenna terminal. Thus, when digital broadcasting is not received, the trouble of erroneously selecting a channel can be prevented.

In addition to the packet selecting means for selecting a packet to be decoded, a packet to be output to the digital signal bus is selected and output to the digital broadcast receiver. By providing the interface means for outputting to the means, a conventional packet selection circuit and decoder can be used.

An automatic digital recording mode in which digital recording is automatically performed when a digital broadcast or a digital input / output terminal is selected and a recording operation is performed on a digitally recordable recording medium. By providing an analog recording mode for performing analog recording, the user can easily determine the selection between digital recording and analog recording.

Further, when program information transmitted by digital broadcasting is extracted and program reservation is performed using the extracted program information, if a recordable recording medium is set, recording reservation is also performed at the same time. Can easily make a recording reservation.

Further, by extracting the time information transmitted by digital broadcasting and using the extracted time information to control the time of the scheduled recording of the recording / reproducing apparatus, the user does not need to adjust the time.

Also, when a malfunction that occurs during the recording and reproduction of a digital broadcast is detected, a message that is easy to understand can be transmitted to a user by displaying the digital broadcast using a mail function of the digital broadcast. Can be seen in time.

When performing variable speed playback during digital playback, the user can be informed that variable speed playback is in progress by outputting the immediately preceding video frame as a still image.

When performing variable-speed playback during digital playback, variable-speed playback data is detected. When no variable-speed playback data is detected, the last video frame immediately before is output as a still image and output. It is possible to cope with the case where the variable speed reproduction data is not recorded.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a digital broadcast receiving and recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing details of the digital tuner of FIG. 1;

FIG. 4 is a flowchart showing the operation of automatic digital recording.

FIG. 5 is a flowchart showing a channel selection operation.

FIG. 6 is a flowchart showing a recording reservation operation.

FIG. 7 is a diagram showing a configuration of a mail circuit.

FIG. 8 is a flowchart showing the operation of the IF circuit.

FIG. 9 is a flowchart showing the operation of variable speed reproduction.

FIG. 10 is a diagram showing an example of a screen display during variable speed playback.

FIG. 11 is a flowchart showing the operation of variable speed reproduction.

[Explanation of symbols]

100: Digital broadcast recording / reproducing device, 101: Digital broadcast antenna, 102: Satellite broadcast antenna, 103
... Antenna, 104 ... Digital tuner, 105 ... B
S tuner, 106 terrestrial tuner, 107 switching circuit, 108 digital recording / reproducing circuit, 109 analog recording / reproducing circuit, 110 switching circuit, 111 recording medium, 113 system controller, 114 interface, 115 image reception Machine 201 demodulation circuit 202
... Packet selection circuit, 203 ... IF circuit, 204 ... Decoder, 208 ... Controller, 701 ... Switching circuit, 70
2 ... mail buffer, 703 ... controller, 1001
... variable speed symbol, 1002 ... time display, 1003 ... mode display, 1004 ... receiver.

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 1, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a digital broadcast receiving and recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing details of the digital tuner of FIG. 1;

FIG. 3 is a flowchart showing the operation of the digital signal bus of FIG. 1;
FIG.

FIG. 4 is a flowchart showing the operation of automatic digital recording.

FIG. 5 is a flowchart showing a channel selection operation.

FIG. 6 is a flowchart showing a recording reservation operation.

FIG. 7 is a diagram showing a configuration of a mail circuit.

FIG. 8 is a flowchart showing the operation of the IF circuit.

FIG. 9 is a flowchart showing the operation of variable speed reproduction.

FIG. 10 is a diagram showing an example of a screen display during variable speed playback.

FIG. 11 is a flowchart showing the operation of variable speed reproduction.

[Description of Signs] 100: Digital broadcast recording / reproducing device, 101: Digital broadcast antenna, 102: Satellite broadcast antenna, 103
... Antenna, 104 ... Digital tuner, 105 ... B
S tuner, 106 terrestrial tuner, 107 switching circuit, 108 digital recording / reproducing circuit, 109 analog recording / reproducing circuit, 110 switching circuit, 111 recording medium, 113 system controller, 114 interface, 115 image reception Machine 201 demodulation circuit 202
... Packet selection circuit, 203 ... IF circuit, 204 ... Decoder, 208 ... Controller, 701 ... Switching circuit, 70
2 ... mail buffer, 703 ... controller, 1001
... variable speed symbol, 1002 ... time display, 1003 ... mode display, 1004 ... receiver.

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

Claims (11)

[Claims] 1. A digital broadcast receiving method comprising: a digital broadcast receiver for receiving a digital broadcast; and an analog broadcast receiver for receiving an analog broadcast, wherein one of the broadcast channels is selected and received. A digital broadcast receiving method, wherein a channel of the digital broadcast receiver cannot be selected when a digital broadcast signal is not input to the digital broadcast receiver. 2. A digital broadcast receiving method for selecting and receiving any one of a plurality of digital broadcasts from a plurality of digital broadcasts, and selecting a channel, wherein the digital broadcast which cannot be received among the digital broadcasts is provided. Is a method for receiving a digital broadcast, wherein the channel cannot be selected. 3. A digital signal recording method in which an input digital signal and a first analog signal obtained by converting the digital signal into analog are selected and recorded on a recording medium, wherein the digital signal or the first analog A digital signal recording method, comprising: a first mode in which a signal is selected and recorded on the recording medium; and a second mode in which the first analog signal is always recorded on the recording medium. 4. The digital signal recording method according to claim 3, further comprising the first mode for selecting the digital signal or the analog signal according to the type of the recording medium. . 5. A digital signal input from a digital broadcast receiving apparatus, a first analog signal obtained by converting the digital signal into analog, and a second analog signal input from the analog broadcast receiving apparatus are selected and recorded. In the digital broadcast recording method for recording on a medium, when the digital broadcast receiving apparatus is selected, a first mode for selecting the digital signal or the first analog signal according to a type of the recording medium; A second mode for selecting the first analog signal when the digital broadcast receiver is selected, and selecting the second analog signal when the analog broadcast receiver is selected. Digital broadcast recording method. 6. A digital broadcast recording method comprising: a digital broadcast receiver having a program reservation function; and recording a signal output from the digital broadcast receiver on a removable recording medium. A digital broadcast recording method characterized in that at the time of program reservation, only program reservation is performed when the recording medium does not exist, and recording reservation is also performed at the same time when the recording medium exists. 7. A digital broadcast receiver having a time receiving function, and a digital clock having at least a clock used for recording reservation, and recording a signal output from the digital broadcast receiver under the control of the clock on a recording medium. In the broadcast recording method, when a digital broadcast can be received, the time received by the digital broadcast receiver is set in the clock, and when the digital broadcast cannot be received, an arbitrary time is set in the clock. A digital broadcast recording method, characterized in that: 8. A digital broadcast recording / playback method comprising a digital broadcast receiver having a mail receiving function, wherein a signal output from the digital broadcast receiver is recorded / reproduced on a removable recording medium. A digital broadcast receiver using the mail function of the digital broadcast receiver to indicate that a malfunction has occurred. 9. The system according to claim 8, wherein when the reproduction is being performed at the set time of the recording reservation, the fact that the recording reservation has not been executed is displayed by using the mail function of the digital broadcast receiver. The digital broadcast recording / reproducing method described in the above. 10. A digital signal reproducing method for reproducing a digital signal recorded on a recording medium, decoding a digital expansion, converting the signal into an analog video signal, and outputting the analog video signal, wherein a predetermined reproduction speed of the recording medium can be changed. A digital signal reproduction method comprising: when performing variable-speed reproduction, converting the analog video signal decoded at the predetermined reproduction speed to a still image immediately before the variable-speed reproduction, and displaying a reproduction time on the still image. Method. 11. A digital signal reproducing method for reproducing a digital signal recorded on a recording medium, decoding a digital expansion, converting the digital signal into an analog video signal, and outputting the analog video signal. When the digital signal for variable-speed reproduction is detected and the digital signal for variable-speed reproduction cannot be detected, when performing the variable-speed reproduction for changing the predetermined reproduction speed, the predetermined reproduction is performed immediately before the variable-speed reproduction. A digital signal reproducing method, wherein the analog video signal decoded at a speed is converted into a still image.