JP2675457B2 - Information playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is a digital audio tape recorder (hereinafter referred to as DAT) relates to an information reproducing apparatus, such as, more particularly, relates to an information reproducing apparatus adapted to play back a still image together with audio is there.

[0002]

2. Description of the Related Art In recent years, DAT has been developed to improve the sound quality of a magnetic recording / reproducing apparatus for audio.

This DAT converts a voice signal into a digital signal and records it on a magnetic tape, and also converts the digital signal recorded on the magnetic tape into a read voice signal and reproduces it to recover data such as error correction. It becomes possible to provide functions and record / reproduce voice with extremely low noise.

Further, the DAT is capable of recording not only voice but also other information such as a still image because of its large recording capacity.

In the DAT capable of recording a still image, for example, different recording modes are adopted in two modes of 2 channels and 4 channels. In the 2-channel mode, one set of information is formed by pairing a still image and the corresponding sound, and a plurality of such sets of information is recorded on the magnetic tape. In the 4-channel mode, a plurality of still images are recorded on a magnetic tape in a 2-channel recording area, and voices such as music that do not correspond to the individual still images are recorded on the other 2 channels.

Some of such DATs have a program reproducing function. This function is designed such that the image number assigned to each still image is programmed in advance, a search is performed, and the still images are reproduced in the programmed order.

[0007]

However, in the above-described structure, most of the still images recorded on the magnetic tape are reproduced in the program reproduction, and the reproduction is performed in the ascending order of the image numbers. In this case, there has been a problem that as the number of programs increases and the number of still images recorded increases, a great deal of labor is required for inputting the programs.

The present invention has been made in view of the above circumstances, and is required for a program when a still image other than the programmed still image is output and there are few still images that need not be reproduced. The purpose is to reduce the effort.

[0009]

Means for Solving the Problems According to claim 1 of the present invention.
The information reproducing device is provided with a still image and each still image.
Information that is played back from the recording medium on which the image numbers are recorded
In order to solve the above problems , the information reproducing apparatus is characterized in that it is configured as follows.

That is, the information reproducing apparatus according to the above-mentioned claim 1 compares the designated image number with the reproduced image number, and when both image numbers match, the information including the still image of the image number is compared. While stopping the reproduction, the information reproduction selecting means for reproducing the information including the still image of the image number when the both image numbers do not match, and the specified image number.
Compared with the reproduced image number, both image numbers match
Sometimes when you want to stop the output of the still image of that image number
On the other hand, when both image numbers do not match, the image number is still
An image output selection means for outputting an image and the above information reproduction selection
Selecting means or the image output selecting means,
And a selection executing means for executing the above.

An information reproducing apparatus according to a second aspect of the present invention is the information reproducing apparatus according to the first aspect, which is configured as follows in order to solve the above problems. There is.

That is, the selection executing means is the recording medium.
Body recording format is still image and audio paired with this
The above information is re-created when and form a set of information.
Select live means and play paired still images and audio,
Stops the playback, and the recording format of the above recording medium
Recorded and reproduced but in parallel and a plurality of still images and sound
Select the image output selecting means
Output or stop outputting the still image with the specified image number.
The voice is continuously played as it is performed.

[0013]

In the information reproducing apparatus according to the above-mentioned claim 1, the selected reproducing device
When selecting and executing the information reproduction selection means by the line means
The information reproduction selection means allows the information including the still image of the image number to be reproduced only when the designated image number and the reproduced image number do not match.
When this configuration is applied to DAT, for example, when both image numbers do not match, the magnetic tape is fast-forwarded and the still image and sound of that image number are not reproduced, and the above image numbers do not match. Information containing the still image of that image number
Operates to play information .

Further, the image output selection process is performed by the selection executing means.
When selecting and executing steps, the image output selecting means
The specified image number matches the played image number.
The still image with that image number is output only when
Will be able to When this configuration is applied to DAT,
Image data obtained from the digital tape is once stored in the image memory.
However, for example, both image numbers are
Do not load the image data into the image memory when doing
Therefore, the image is not output and both image numbers match.
The still image of that image number is stored in the image memory
Operates to output. At this time, the playback operation
Is continuous, so other information is
It can be reproduced regardless of whether it is raw or not.

As described above, according to the information reproducing apparatus of the first aspect, since the designated still image is not reproduced or output , most of the recorded still images are reproduced in ascending order of image number. In this case, the number of image numbers to be designated can be reduced, and the labor required for the designation can be reduced.

On the other hand, in the information reproducing apparatus according to the second aspect, the recording format of the recording medium corresponds to a still image and a still image.
When forming a set of information with the voice
To, real and select the information reproduction selection means by the selected execution means
Run. When this operation is applied to DAT,
The recording format has a recording area for 2 channels
This is the so-called 2-channel mode, and the recording medium is
Number of image data and audio data paired with each
And are recorded as a set of information. And DAT
Play or stop playback of this information on the recording medium.
It has become so.

Further , the recording medium has a plurality of recording formats.
It records and plays back still images and audio in parallel.
At some time, the image output selection means is selected by the selection execution means.
Select and execute. When this operation is applied to DAT,
The recording format of the recording medium is the recording area for 4 channels.
Is a so-called 4-channel mode having a recording medium
Contains multiple image data in the recording area for 2 channels.
These images are recorded and recorded in the recording areas for the other two channels.
Audio data is recorded in parallel with the data. And
DAT implements the output or non-output of this information on the recording medium.
I'm supposed to go. Also in 2 channel mode
Image data individually for each information even in 4-channel mode
The image number assigned to is recorded.

As described above, the information reproducing apparatus according to the above-mentioned claim 2 explains each still image in the 2-channel mode.
It is possible to reproduce the information on the recording medium recorded in correspondence with
It is possible, and in the 4-channel mode, an image is displayed on music.
It is possible to reproduce the information on the recording medium that also recorded the image.
Wear.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a DAT capable of recording and reproducing still images will be described below with reference to FIGS. 1 to 6.

The DAT according to this embodiment is, as shown in FIG. 2, A / D converters (A / D in the figure) 1 to 3, a data bus 4, image memories 5 and 6, a P / S converter. (P / S in the figure)
7, input changeover switch 8, recording signal processing circuit 9, reproduction signal processing circuit 10, output changeover switch 11, S / P converter (S / P in the figure) 12, D / A converters 13 to 15, clock generation Circuit 16 and system control circuit 17
It has.

The A / D converters 1 and 2 have a voice input terminal 18
A circuit for converting analog voice signals respectively input from 19 into digital voice data. The A / D converter 3 is a circuit that converts an analog video signal (still image) input from the video input terminal 20 into digital image data.

The data bus 4 is a signal line for transferring image data, and includes an A / D converter 3, image memories 5 and 6, and P /
S converter 7, S / P converter 12 and D / A converter 15
Is connected.

The image memory 5 is used by the A / D converter 3 during recording.
Is a memory for storing one screen of image data transferred from the data bus 4 through the data bus 4, and the image memory 6 is one screen transferred from the S / P converter 12 through the data bus 4 during reproduction. This is a memory for storing minute image data. Further, the image memory 5, like the image memory 6, is also adapted to capture and store image data from the S / P converter 12 during reproduction. Furthermore, the above memory 5 and 6
Is are I Do to perform writing and reading of image data alternately at the time of reproduction.

The P / S converter 7 is a circuit that serially converts parallel image data transferred from the image memory 5 via the data bus 4.

The input changeover switch 8 has input terminals 8a to 8a.
c and an output terminal 8d, and A / D converters 1 and 2
It is a switch for selecting one of the audio data output from the P / S converter 7 and the image data output from the P / S converter 7 to be input to the recording signal processing circuit 9. In this input selector switch 8, the input terminals 8a and 8b are A / D
It is connected to the converters 1 and 2, the input terminal 8c is connected to the P / S converter 7, and the output terminal 8d is connected to the recording signal processing circuit 9.

The recording signal processing circuit 9 modulates input data so as to be suitable for recording, performs interleaving processing, adds an error correction code, etc. to the input data,
This is a circuit for converting the above data into a recording signal. The recording signal processing circuit 9 outputs the image numbers generated by the system control circuit 17, which will be described later, one by one corresponding to the image data of one screen.

The recording signal output from the recording signal processing circuit 9 is applied to a magnetic head (not shown) and recorded on the magnetic tape 21 by this magnetic head. In addition, the signal taken out from the magnetic tape 21 by the magnetic head is reproduced as a reproduced signal processing circuit 10.
To be entered.

The reproduced signal processing circuit 10 is a circuit that demodulates the reproduced signal, performs deinterleaving processing, error correction processing, and the like to convert the reproduced signal into the original data. The reproduction signal processing circuit 10 takes out a subcode including image number data from the demodulated signal and sends it to the system control circuit 17.

The output changeover switch 11 has an input terminal 11a.
And output terminals 11b to 11d, and outputs the data output from the reproduction signal processing circuit 10 to the D / A converter 13
A switch for selecting and outputting to 14 and the S / P converter 12. This output selector switch 11 has an input terminal 11a.
Is connected to the reproduction signal processing circuit 10, and the output terminal 11b
11c are connected to the D / A converters 13 and 14, respectively,
The output terminal 11d is connected to the S / P converter 12.

The S / P converter 12 has an output changeover switch 1
1 is a circuit for converting serial image data input via 1 in parallel. The image data output from the S / P converter 12 is transferred to the image memories 5 and 6 via the data bus 4 as described above.

The D / A converters 13 and 14 are circuits for converting the audio data output from the output terminals 11b and 11c of the output changeover switch 11 into analog audio signals. The D / A converter 15 is a circuit that converts the image data transferred from the image memories 5 and 6 via the data bus 4 into an analog video signal. D / A converter 13
The audio signal output from 14 is the audio output terminal 22.2.
The video signal output to the D.A.3 and output from the D / A converter 15 is output to the video output terminal 24.

The clock generation circuit 16 has a video input terminal 2
Based on the sync signal of the video signal input from 0, A /
It is a circuit that generates a sampling clock supplied to the D converter 3 and the D / A converter 15, and a write clock and a read clock supplied to the image memories 5 and 6.

The system control circuit 17 has a structure including a microcomputer, and includes the image memories 5 and 6, the input changeover switch 8, the recording signal processing circuit 9, the reproduction signal processing circuit 10, the output changeover switch 11 and the like. In addition to the control function for controlling the operation of the DAT circuit and mechanism, it also has various functions such as subcode processing. For example, the system control circuit 17 generates an image number and sends it to the recording signal processing circuit 9 every time a still image is recorded for one screen. Further, the system control circuit 17 uses the image number to be reproduced,
It has a function for performing program reproduction as described below.

In the 2-channel mode, which will be described later, the system control circuit 17 sets one image number reproduced from the magnetic tape 21 to all image numbers programmed by an operation unit (not shown) when performing program reproduction. A comparison is made and this comparison is executed for all image numbers to be reproduced. Then, as a result of the above comparison, the system control circuit 17 sends the magnetic tape 21 at a high speed until the next image number is reproduced when the two image numbers match, while the two image numbers do not match when the two image numbers do not match. The still image and the sound to be paired with the still image are reproduced, and have a function as information reproduction selecting means.

In addition to this, the system control circuit 1
In the case of a 4-channel mode, which will be described later, 7 compares both image numbers in the same manner as above, and as a result of comparison, when both image numbers match, the image data of that image number is not output, and both image numbers do not match. At this time, the image memories 5 and 6 are controlled so as to output the image data of the image number, while the sound is continuously reproduced regardless of the result of the above comparison. It has the function of. If both image numbers match,
Other than the above method, the image data may not be taken into the image memories 5 and 6.

Next, the recording format of this DAT will be described.

In the 2-channel mode, the sampling frequency is 48 kHz and there is a recording area for 2 channels. As shown in FIG. 3A, the image data V _{1 to} V _N
A plurality of sets of information are continuously recorded, with the audio data A _{1 to} A _N paired with each other as one set of information. Further, the image numbers 1 to _N individually given to the image data (still images) V _{1 to} VN for each information are recorded in a sub signal area (not shown) of the magnetic tape 21. In such a 2-channel mode, it is possible to record a still image in correspondence with each description, and it is used for presentations and the like. Also, each information unit can be rewritten with another information unit after recording by so-called after recording.

On the other hand, the 4-channel mode has a recording area for 4 channels at a sampling frequency of 32 kHz, and as shown in FIG. 3B, image data V ₁ to V _N recorded and the other 2
So that the audio data A are recorded in parallel <br/> the recording area of the channels in the image data V ₁ ~V _N. In the 4-channel mode as well, as in the 2-channel mode, the image numbers 1 to _N individually given to the image data V _{1 to} VN are recorded for each information. Such a 4-channel mode is suitable for the case where an image image is recorded together with music.

Now, with the above-mentioned configuration, in the case of performing program reproduction, a processing procedure for programming an image number of a still image which does not need to be reproduced and shifting to a reproducing operation will be described with reference to a flowchart of FIG. To do. In addition,
In this DAT, the upper limit of the number of image number programs is set to 100.

First, if there is a key input to program the image number from the above-mentioned operation unit, the program number P
Is set to 1 (S1), and it is determined at this stage whether or not to start the reproduction by inputting the reproduction key (S2). S
If the reproduction is not started in 2, it is determined whether or not the image number of a still image that does not need to be reproduced is designated (S
3) If the image number is specified here, the image number is once stored in the memory built in the system control circuit 17 (S4). In the memory, each address is assigned to the program number P one by one, and the image number associated with the program number P is individually written.

When one program of the image number is finished as described above, 1 is added to the program number P (S
5) It is determined whether the program number P has reached 101 (S6). In S6, the program number P
When the program number P has reached 101, it is determined whether or not to start the reproduction (S).
7). In S7, the standby state is continued until the reproduction key is input, and when the reproduction key is input, the reproduction operation is performed (S7).
8). Also, in S2, when starting the reproduction,
The processing shifts to S8.

Next, the processing procedure during program reproduction will be described with reference to the flowchart of FIG.

First, when reproduction is started, the magnetic tape 21
The image number M is reproduced from (S11). At this time, the reproduction signal processing circuit 10 extracts the subcode from the signal obtained from the magnetic tape 21, and the image number included in the subcode is taken into the system control circuit 17.

Next, at this stage, it is judged whether or not the reproduction is to be ended by the input of the stop key (S12). If the reproduction is not ended here, the program number P is set to 1 (S13). Then, the image number N _P corresponding to the program number P is read from the memory of the system control circuit 17 (S14), and this image number N _P is compared with the reproduced image number M to see if they are equal. It is determined whether or not (S15).

If it is determined in S15 that both image numbers are the same, the reproduction mode is determined (S1).
6). When it is determined in S16 that the reproduction mode is the 2-channel mode, the magnetic tape 21 is fast-forwarded until the next image number M is reproduced (S17), and the process returns to S12. On the other hand, if it is determined in S16 that the reproduction mode is the 4-channel mode, the output of the still image of that image number is stopped while maintaining the reproduction operation (S18), and the same processing as above is performed. S12
Return to When it is determined in S15 that the image numbers are not the same, it is determined whether the program number P is the final program number _PLAST set (S19).

In S19, the program number P is P
_{When the result is LAST} , the still image of the image number M which is the comparison target in S15 is regarded as not corresponding to any programmed still image and is reproduced (S20). After that, it is judged whether or not the reproduction of the still image is completed (S
21) If the reproduction is finished here, the next image number M, that is, the previous image number M to which 1 is added is reproduced (S22), and the process returns to S12. Also,
In S19, if the program number P is not in the P _LAST, 1 is added to the program number P (S2
3), the process returns to S14.

As described above, in the above processing, the image number M is individually compared with all the image numbers N _P , it is determined whether or not each still image is programmed, and it is determined that the still image is not programmed. Only the captured still image is reproduced.

Now, the operation of program reproduction based on the above-mentioned processing will be described. In the 2-channel mode and the 4-channel mode, the data recorded on the magnetic tape 21 are sequentially given image numbers from 1 in the order of recording. Further, prior to the program reproduction, the image numbers of the still images that do not need to be reproduced are programmed as 4 to 7 and 10, for example.

In such a setting, in the 2-channel mode, as shown in FIG.
When the image number of is recognized, the reproduction operation is started, and the image data V _{1 to} V ₃ · V ₈ · V ₉ · V on the magnetic tape 21 is detected.
₁₁ to the audio data _{A 1 ~A 3 · A 8 ·} A 9 · A 11 ~ and is reproduced, respectively still image _{v 1 ~v 3 · v 8 ·} v 9
・ V ₁₁ and voices a _{1 to} a ₃ a ₈ a ₉ a ₁₁ are output.

When the image numbers 4 to 7 and 10 are recognized, the fast-forwarding operation is performed, and during this period, the image data V _{4 to} V ₇ are sent.
Since · V ₁₀ and the audio data A ₄ ~A ₇ · A ₁₀ is not played, the still image v ₄ ~v ₇ · v ₁₀ and voice a ₄ ~a
₇ · a ₁₀ is not output, but instead still image v ₃ ·
v ₉ is continuously displayed.

On the other hand, in the 4-channel mode, as shown in FIG. 6, when the image numbers 1 to 3, 8, 9, and 11 are recognized, the operation for outputting the image is performed, and the magnetic tape 2 is operated.
Image data _{V 1 ~V 3 · V 8 ·} V 9 · V 11 ~ on 1 is reproduced and outputted as a ~ still image _{v 1 ~v 3 · v 8 ·} v 9 · v 11.

When the image numbers 4 to 7 and 10 are recognized, the operation for stopping the image output is performed. During this period, the image data V _{4 to} V ₇ and V ₁₀ are stored in the image memories 5 and 6. also, although not outputted as a static image v ₄ ~v ₇ · v _10, but instead still image v ₃ · v ₉ are displayed subsequently.

Further, in the 4-channel mode, since the reproducing operation is continuously performed, the audio data A is reproduced normally and is output as the audio a without interruption even during the period when the image output is stopped.

As described above, in this embodiment, the image number of a still image that does not need to be reproduced is programmed in advance so that the still image is not output during reproduction. When most of them are reproduced in order from the smallest image number, the labor required for programming the image number can be reduced.

[0055]

In the information reproducing apparatus according to the first aspect of the present invention, a still image and an image number given to each still image are recorded.
An information reproducing device for reproducing these from the recorded recording medium
When the specified image number and the reproduced image number are compared, the reproduction of the information including the still image of that image number is stopped when the both image numbers match, while the two image numbers do not match. Information reproduction selection means for reproducing information including a still image of that image number, and the specified image number
And the reproduced image number are compared, and both image numbers match.
Stop the output of the still image of that image number
On the other hand, when both image numbers do not match, the image number is still
An image output selection means for outputting an image and the above information reproduction selection
Selecting means or the image output selecting means,
And a selection executing means for executing the above.

As a result, only when the designated image number and the reproduced image number do not match, the information including the still image of that image number is reproduced or output . When most of them are reproduced in ascending order of image numbers, the number of image numbers to be designated can be reduced.

Therefore, if the information reproducing apparatus according to the above-mentioned claim 1 is adopted, there is an effect that the labor required for designating the image number can be reduced.

An information reproducing apparatus according to claim 2 of the present invention is the information reproducing apparatus according to claim 1, wherein
The selection execution means makes the recording format of the recording medium still.
An image and a pair of voices form a set of information.
When the above information reproduction means is selected,
Play back or stop playback of still images and audio, and
The recording format of the recording medium is multiple still images and audio.
The above image when recorded and reproduced in parallel
A still image with the image number specified by selecting the output selection means
Output or stop the output and restart the audio continuously.
It is a composition that makes it live.

As a result, in the 2-channel mode,
Information on the recording medium in which each image is associated with a description
Can be played in 4 channel mode
The information of the recording medium that recorded the image image along with the music
The effect that it can be reproduced is exhibited.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a processing procedure in program reproduction by DAT according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a DAT according to an embodiment of the present invention.

3 is an explanatory diagram showing a recording format by DAT of FIG. 2. FIG.

FIG. 4 is a flowchart showing a processing procedure in a program of a still image which does not need to be reproduced by DAT in FIG.

5 is an explanatory diagram showing an operation during program reproduction in the 2-channel mode of the DAT of FIG.

FIG. 6 is an explanatory diagram showing an operation at the time of program reproduction in the 4-channel mode of the DAT of FIG.

[Explanation of symbols]

5.6 Image memory 9 Recording signal processing circuit 10 Reproduction signal processing circuit 17 System control circuit (information reproduction selection means, image output selection means , selection execution means )

Continuation of front page (56) Reference JP-A-1-268278 (JP, A) JP-A-2-235486 (JP, A) JP-A-3-14378 (JP, A) JP-A-63-213143 (JP , A) Japanese Unexamined Patent Publication No. 2-143953 (JP, A) Japanese Unexamined Patent Publication No. 2-333788 (JP, A) Actual Development No. 2-354388 (JP, U)

Claims (2)

(57) [Claims] 1. A still image and an image provided for each still image
Playing back information from the recording medium on which the numbers are recorded
In the raw device, compare the specified image number with the reproduced image number,
Information reproduction selection means for stopping reproduction of information including a still image of the image number when both image numbers match, and reproducing information including still image of the image number when both image numbers do not match , Compare the specified image number with the played image number,
When both image numbers match, the still image of that image number
When the output is stopped but the image numbers do not match,
Image output selecting means for outputting a still image of that image number
And either the information reproduction selection means or the image output selection means
It is provided with a selection execution means for selecting and executing one of them.
An information reproducing apparatus characterized by the above-mentioned. 2. The selection executing means is a recording medium of the recording medium.
The format consists of a still image and a pair of voices.
When the information is to be formed, the above information reproducing means is selected.
Selective paired still image and audio playback or playback stop
The recording format of the recording medium is
A still image and sound are recorded and reproduced in parallel.
The image specified by selecting the image output selection means
Output or stop outputting the still image of the image number
The sound is reproduced continuously, according to claim 1.
Information reproducing apparatus described.