JP2596551B2 - Still image playback device with sound - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a recorded information reproducing apparatus capable of reproducing a still image with sound.

2. Description of the Related Art A recording medium, for example, a video memory having a video memory capable of storing at least one field of video information obtained from a video disk, outputs audio information read from the video disk sequentially as reproduction audio information, and outputs a predetermined image. A method of reproducing a still image with sound by writing corresponding video information to a video memory and repeatedly reading out the written video information and outputting the reproduced video information as reproduction video information has been proposed by the present applicant in Japanese Patent Application No. 61-1.
Proposed in 97619.

FIG. 3 shows a schematic configuration of a recording information reproducing apparatus to which such a reproducing method is applied. In the figure, a video disk 1 is driven to rotate by a spindle motor 2, and its recorded information is read by an optical pickup 3. The read output of the pickup 3 is amplified by a preamplifier 4, an audio component of the amplified output is demodulated by an audio demodulation circuit 5 and supplied to an audio output terminal 6, and a video component is demodulated by a video demodulation circuit 7 to obtain a video signal. It is supplied to a video output terminal 9 via a memory (field memory or frame memory) 8. The write clock generation circuit 10 generates a clock locked to, for example, a horizontal synchronizing signal or a color burst signal in a video signal which is a demodulated output of the video demodulation circuit 7, and controls the timing of writing video information to the video memory 8. The write clock is used. On the other hand, the reading of the video information written in the video memory 8 is performed in the read clock generation circuit 11 based on a read clock generated in synchronization with the reference signal from the reference signal generation circuit 12. Note that writing of video information to the video memory 8 is performed only during a period in which a write command signal is supplied from a control circuit (not shown) via the input terminal A.

In such a configuration, video information is written into the video memory 8 by a write clock synchronized with the video signal while the write command signal is being supplied, and when the supply of the write command signal is stopped, the writing of the video information is stopped. On the other hand, the reading of the video information written in the video memory 8 is always performed by the fixed frequency read clock regardless of the supply / stop of the write command signal. As a result, the video information read from the video memory 8 is continuously output to the monitor 13 via the video output terminal 9 as reproduced video information, and an image is displayed on the monitor 13.

Reading of recorded information from the video disk 1 is performed in a normal reproducing operation. When a viewer stops watching a screen of the monitor 13 and stops writing at a desired image, the video memory 8 stores the subsequent video information. The writing is not performed, and the video information corresponding to the desired image finally written in the video memory 8 is repeatedly read, so that it is displayed on the monitor 13 as a still image.
On the other hand, as for the audio information, since the reproducing operation of the video disc 1 is the normal reproduction, the read audio information is demodulated as it is, and the speaker 14 outputs the normal reproduced audio information through the audio output terminal 6.
And played as usual. If the write command is given again, a moving image by normal reproduction from that time is obtained after the still image.

That is, by the above-described operation, a special reproduction effect such as inserting a still image in the middle of a moving image by normal reproduction can be obtained without interrupting sound reproduction.

In the still image playback device with audio configured as described above, still image playback is performed when the write command is stopped. However, since playback of the disc is continued during the still image playback period,
The image of the still image to be obtained next cannot be seen on the monitor, and to obtain the next still image, a write command is given once, the moving image is reproduced by normal reproduction, and the write command is stopped while watching this As a result, the operation of shifting to still image reproduction must be repeated. Therefore, only the repetitive reproduction effect of still image / moving image / still image / moving image... Can be obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a still image reproduction apparatus with sound that can reproduce a desired image continuously as an arbitrary number of still images with sound. Aim.

In the still image playback device with sound according to the present invention, the image numbers corresponding to the desired images among the images obtained from the recording medium are sequentially stored in advance in the storage means in accordance with the reproduction order, and the video information read from the recording medium is stored. The video information corresponding to the image number stored in the storage means is written into the video memory in accordance with the storage order, and the written video information is sequentially and repeatedly read out as playback video information. It is configured as information. In order to selectively reproduce only the video information of the video information and the audio information which are simultaneously obtained by reading the recording medium in this manner, as a writing control means of the video memory, an image is read from the video signal read from the recording medium. Extraction means for extracting a number, and a match detection means for detecting that the extracted image number matches the image number stored in the storage means, provided in response to a detection output of the match detection means. The writing to the video memory is performed.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention, in which parts equivalent to those in FIG. 3 are indicated by the same reference numerals. The video signal read from the video disc 1 includes an image number such as a frame number assigned to each playback screen, and this image number is an address for searching and playing back an arbitrary screen. Becomes A data memory 15 capable of storing an arbitrary number of the image numbers is provided. The data memory 15 includes, for example, a series of images attached to a disc to be reproduced by an input unit 16 such as a numeric keypad. Based on the number, an image number corresponding to a desired image is input as a target image number in the order of reproduction. The data memory 15 stores the image numbers in order of input from the first address.

The video signal which is the demodulated output of the video demodulation circuit 7 is also supplied to the data separation circuit 17. The data separation circuit 17 separates and extracts data corresponding to the image number from the video signal. This data is decoded by the decoder 18 into an image number that changes every moment as the reproduction progresses, and is supplied to the match detection circuit 19. The match detection circuit 19 includes, for example, a register for storing a target image number given from the data memory 15, a register for storing a playback image number obtained from the disk 1, and a match circuit for monitoring whether the values of both registers match. The target image number and the reproduced image number are always compared, and if they match, a write command is issued for a time corresponding to one field period or one frame period (determined by whether the video memory 8 is a field memory or a frame memory). It is configured to emit a signal. This write command signal is supplied to the video memory 8 via the mode changeover switch 20 and also to the data memory 15 so that after the writing of the video memory 8 is completed, the data storage address is advanced by one address. This allows
The next image number is automatically sent from the data memory 15 to the match detection circuit 19. Mode switch
Switching to the N side results in a reproduction mode similar to that of the conventional apparatus shown in FIG. 3, and switching to the S side results in a special reproduction mode according to the present invention.

Next, a description will be given of a reproducing operation in the still image reproducing apparatus with sound having the above-described configuration.

First, based on a series of image numbers attached to a disc to be reproduced, an arbitrary number of image numbers corresponding to a desired image are input from the input unit 16 in the reproduction order and stored in the data memory 15 in advance. Keep it.

Subsequently, the mode changeover switch 20 is switched to the S side to start the reproduction of the disk, whereby the audio information read from the disk 1 is demodulated by the audio demodulation circuit 5 and sequentially supplied to the speaker 14 as reproduced audio information. And output as a normal playback sound. On the other hand, the video information read from the disk 1 is demodulated by the video demodulation circuit 7 and sequentially supplied to the video memory 8, and the reproduction image number obtained from the video signal by the match detection circuit 19 is provided from the data memory 15. Since the write command signal is not supplied to the video memory 8 until it is detected that the video information matches the image number, the video information is not written into the video memory 8.

The playback operation proceeds, and the playback image number is
When the coincidence detection circuit 19 detects that it matches the target image number stored at the address, the circuit 19 outputs a write command signal. By this write command signal, video information corresponding to the target image number is written into the video memory 8 for one field or one frame. Thereafter, the video information is repeatedly read out and output as reproduced video information, so that the video information is stopped on the monitor 13. The image will continue to be displayed. At the same time, when the write command signal output from the match detection circuit 19 disappears, that is, when the writing of the video memory 8 is completed, the data storage address of the data memory 15 is advanced by one address, whereby the next target image number matches. The signal is sent to the detection circuit 19, and enters a standby state for the next target screen.

When the reproduction operation further proceeds and a reproduced image number that matches the new target image number is obtained, the match detection circuit 19 generates a write command signal again to write the video information corresponding to the new screen into the video memory 8. At the time when the writing is completed, the writing instruction is stopped, and control is performed so that the address of the data memory 15 is advanced by one address. During this time, a new still image is continuously displayed on the monitor 13. If the first image number of the disc is stored in the first address of the data memory 15, the still images can be displayed continuously on the monitor 13 from the beginning to the end.

The above series of operations is performed by setting the target image number to the data memory 15
The desired still images are displayed on the monitor 13 in an arbitrary number one after another by repeating the number stored in the monitor 13. In addition, since the normal reproduction operation is continued from the beginning to the end, it goes without saying that a normal reproduction sound can be obtained from the speaker 14.

In the above embodiment, when the target image number is stored in the data memory 15, an image number corresponding to a desired image is input to the input unit based on a series of image numbers attached to a disk to be reproduced. Although it is assumed that the input is performed in an arbitrary number from 16 in the playback order, it is most preferable that the viewer monitors the disc while the disc is reproduced in advance.
This is a method of sequentially storing the image numbers included in the corresponding video information by issuing a storage command each time a desired image is reproduced while watching the moving image displayed on 13. FIG. 2 shows the configuration of a still image reproducing apparatus with audio to which this method is applied.

In FIG. 2, a data separation circuit 21 for separating and extracting data corresponding to an image number from a video signal output from a video memory 8,
Decoder 22 that decodes the extracted data into image numbers
And a gate circuit 23 for supplying the image number from the decoder 22 to the data memory 15 in response to a storage command from the input unit 16 '. It is the same as that of FIG.

Although the data separation circuit 21 and the decoder 22 are separately provided, a configuration is also possible in which these are also used as the data separation circuit 17 and the decoder 18, and the output of the decoder 18 is used as the input of the gate circuit 23.

In such a configuration, first, the mode switch 20
To the N side to start the normal reproduction operation. Then, the moving image displayed on the monitor 13 is monitored, and when a desired screen is reproduced, a storage command is issued from the input unit 16 '. As a result, the gate circuit 23 is opened, the image number of the screen is stored in the data memory 15 as a target image number, and thereafter, a storage command is issued when a desired screen is reproduced in the same manner. The number of target image numbers is sequentially stored in the data memory 15 in accordance with the order of reproduction of the disks. Of course, unrelated parts may be skipped by fast-forward etc. to reach the desired screen, or in order to capture the desired screen accurately, set the frame forward playback or still image playback mode before storing the target image number. It does not matter.

When the target image number is stored in the data memory 15 in this way, the mode changeover switch 20 is switched to the S side, and the normal reproduction of the disc is started from the beginning. You get it.

In each of the above embodiments, the writing process of the video memory 8 is performed by hardware using the data memory 15 and the match detection circuit 19, but the writing process can be performed by software using a microcomputer.

In the above embodiment, the case where the present invention is applied to a video disc player has been described. However, the present invention can also be applied to a video tape recorder.

Effect of the Invention As described above, in the still image reproducing apparatus with sound according to the present invention, the image numbers corresponding to the desired images among the images obtained from the recording medium are stored in advance in the storage means in accordance with the reproduction order. Of the video information read from the recording medium, the video information corresponding to the image number stored in the storage means is written into the video memory in accordance with the storage order, and the written video information is repeatedly read out sequentially to obtain playback video information. Since the read audio information is used as the reproduction audio information as it is, a new video expression effect that continuously reproduces only a desired image as a still image without interposing a moving image can be obtained with sound. And extracting means for extracting an image number from a video signal read from the recording medium as write control means for the video memory, and detecting that the extracted image number matches the image number stored in the storage means. And a match detection means, and the video memory is written in response to the detection output of the match detection means. As a result, the present invention achieves selectively reproducing only the video information of the video information and the audio information obtained simultaneously by reading the recording medium without changing the reading mode. In addition, since the storage content of the storage means can be arbitrarily changed, the same reproduction of the audio information is performed every time, while the video information can be reproduced differently each time. Unprecedented audio-visual effects can be exhibited.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a block diagram showing another embodiment of the present invention, and FIG. 3 is a block diagram showing a conventional example. Description of Signs of Main Parts 3 Optical Pickup 5 Audio Demodulation Circuit 7 Video Demodulation Circuit 8 Video Memory 15 Data Memory 17,21 Data Separation Circuit 19 Match Detection Circuit 20 … Mode switch

Claims (1)

(57) [Claims] A video memory capable of storing video information for at least one field obtained from a recording medium, sequentially outputting audio information read from the recording medium as reproduction audio information, and outputting the reproduced audio information to a predetermined image. A still image reproducing apparatus with audio for writing corresponding video information to the video memory and repeatedly reading out the written video information and outputting the reproduced video information as reproduction video information, the apparatus corresponding to a desired image among images obtained from the recording medium Input means for inputting the image numbers to be reproduced in the order to be reproduced, storage means for sequentially storing the image numbers input by the input means, and video information read from the recording medium, stored in the storage means. The video information corresponding to the image number in question is stored in the video Write control means for controlling writing to the memory, wherein the write control means extracts an image number from a video signal read from the recording medium, and stores the extracted image number and the storage means in the storage means. And a match detecting means for detecting that the matched image number matches, and writing the video memory in response to a detection output of the match detecting means.