JPS63193766A - Recorder and reproducing device - Google Patents

Abstract

PURPOSE:To shorten a time required for visual retrieval and to easily perform retrieval, by reproducing still picture signals of plural compressed picture planes when a retrieval mode is instructed. CONSTITUTION:An input video signal 1 is digitized at an A/D converter 2, and is supplied to switches 3 and 4. The switch 3 is controlled so as to connect the A/D converter 2 to a memory 7 by a control signal 5, and the output of the A/D converter 2 is accumulated in the memory 7 according to a memory control signal 8. Also, the switch 4 is read out by a control signal 8, and is modulated at a transmission path modulator 9, and is recorded on an optical disk in an optical disk device 10. In such a way, since it is possible to display several sheets of images though they are compressed simultaneously on one picture plane to retrieve a desired still picture out of recorded and preserved images, and to retrieve the desired image out of them, a targeted still picture can be found out in a very short time and easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a still image recording device and a still image reproducing device.

[Conventional technology]

Conventionally, in this type of device, when searching for a desired still image from among a plurality of still images that have been recorded and saved, and wishing to reproduce and use it, classification is performed that categorizes the characteristics of each still image to be saved. A still image is recorded with a code added in advance.

When the user wants to reproduce and use the still image, he/she selects the recorded still image by referring to the classification code table, looks at the reproduction screen, and searches for the desired still image.

However, when searching for a desired still image by relying on vision, the search must be performed while playing back each recorded still image one by one, which is time consuming and visually Target search was not easy.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a still image recording and reproducing apparatus that can quickly and easily realize the conventional visual search for still images as described above.

[Means for solving problems]

In order to achieve such an object, in the present invention, when recording a still image to be saved, a compressed signal of the image is continuously recorded in advance in a predetermined area of a medium.

When playing back for search, the compressed signal of the predetermined area is played back so that multiple images can be displayed at once on one screen, reducing the time required for visual search and making it easier. Make sure to search for it.

That is, in the recording device of the present invention, the first means for supplying a still image signal, the second means for compressing the still image signal, and the still image signal supplied by the first means are recorded on a medium. The present invention is also characterized by comprising a recording means for continuously recording still image signals for a plurality of double sides compressed by the second means on a predetermined portion of the medium.

Further, in the playback device of the present invention, a still image signal and a compressed still image signal of the still image signal are played back from a medium in which both the still image signal and the compressed still image signal are recorded. The apparatus is characterized by comprising means for instructing a search mode, and means for reproducing the compressed still image signals for the plurality of double sides when the search mode is instructed by the means.

[Effect]

Therefore, according to the present invention, in order to search for a desired still image from among recorded and saved images, several images are simultaneously displayed on one screen, although they are compressed. Since it is possible to search for a desired image from among them, it is possible to easily find a desired still image in a very short time.

〔Example〕

FIG. 1 is a block diagram showing the configuration of an embodiment of a still image recording/reproducing apparatus according to the present invention, and only main parts related to the present invention are shown, and other parts are omitted. In FIG. 1, 1 is an input video signal, which is input to an A/D converter 2. The output of the A/D converter 2 is input to switches 3 and 4. Switch 3 is controlled by control signal 5.
Further, the switches 4 are each controlled by 6 control signals. The output of the switch 3 is input to an image memory 7, which is controlled by a memory control signal 8. The output of the memory 7 is input to the switch 4 and the transmission line modulator 9, and the output of the transmission line modulator 9 is input to the optical disk drive device 10. Further, the output of the switch 4 is input to a D/A converter 11, and an output video signal 12 is obtained as an output of the D/A converter 11. -Destination disk drive device 1
The reproduced output from 0 is input to a transmission line demodulator 13, and the output of the transmission line demodulator 13 is input to a data compressor 14 and a switch 15. Switch 15 is controlled by a control signal 16, and the output of switch 15 is input to switch 3. 40 is a control signal generation circuit, which includes switches 3,
4.15 and a signal to control the memory 7. 41 is a recording switch 4 for executing recording.
2 is a search switch for reproducing a search image, and 43 is a reproduction address setting circuit for setting an image to be reproduced based on the search image.

The operation of this embodiment will be explained below with reference to FIG.

First, an input video signal 1 is digitized by an A/D converter 2 and supplied to a switch 3 and a switch 4. The switch 3 is controlled by the control signal 5 to connect the A/D converter 2 and the memory 7, and the output of the A/D converter 2 is stored in the memory 7 according to the memory control signal 8. Further, the switch 4 is read out by the control signal 8 and modulated by the transmission path modulator 9, and the optical disk drive device 1
0 is recorded on the optical disc. The arrangement of signals on the optical disk in this case is shown in FIG. 2(a). position code 1
7 and the image signal 18 constitute one sheet of image information 19. This image information.

The area on the optical disk where the 19 sets are recorded is shown in FIG. 2(d). Normal image information 19 is on the optical disc 24
is recorded in the image information area 25 of. Next, the operation of generating and recording one new still image from N still images will be described. First, signals are reproduced one by one from N still images recorded from the optical disk drive device 10 on the optical disk 4 built into the device 10, demodulated by the transmission line demodulator 13, and data compressed by the data compressor 14. The data is stored in the memory 7 via the switch 15 and the switch 3 in accordance with the memory control signal 8. The above procedure is performed continuously, and when information compressed from N still images is accumulated, the state of the memory control signal 8 changes, and the contents of the memory 7 are read out according to the memory control signal 8. The signal is modulated by the transmission path modulator 9 and recorded on the optical disk 24 by the optical disk drive device 10.

An example of the arrangement of signals on the optical disk in this case is shown in Figure 2 (
Shown in C). The position code 17 and the data compressed image PCM signal 22 constitute search image information 23, and the data compressed image PCM signal 22 is divided into data compressed information of each of 1 to N still images. This search image information 23
FIG. 2(d) shows the area on the optical disk in which the set of data is recorded. The search image information 23 is recorded in the search image information recording area 26 on the optical disk 24 .

Next, regarding an example of data compression by the data compressor 14,
This will be explained using FIG. 2(b). In FIG. 2(b), the display screen 20 shows each of N still images. The data compressor 14 compresses the data to 1/N by taking only one data for each sampling point N of the still image, and stores it in the memory 7, as shown in the search screen 21 in FIG. 2(b). Thus, one still image is generated by N 1/N reduced images of each still image.

In the above-mentioned embodiment, after recording several still images in a predetermined area of a medium, the plural still images are each compressed and synthesized, and the synthesized plural still images are recorded in the predetermined area described above. Although a new recording was made in an area different from the original area, this operation is performed automatically.

Alternatively, it may be performed manually.

As another embodiment of the present invention, FIG. 3 shows an example in which the recording area of the recording medium shown in FIG. 2(d) is changed. Identical components in the figures are indicated by the same reference numerals. FIG. 3(a) shows the arrangement of signals to be recorded on a recording medium, and is a method in which image information 19 of n=1 to N is successively recorded followed by search image information 23. FIG. 3(b) is a diagram showing the arrangement of recording signals on the optical disc 24, where 27 indicates the disc rotation direction.

According to this embodiment, each image information 19 and search image information 23
and are recorded consecutively or at a close distance, so the second
Compared to the embodiment shown in the figure, when the desired image information 19 is reproduced after the search image information 23 is reproduced and confirmed, the desired image information can be obtained in a shorter time.

The effects of this embodiment will be described below. As can be understood from the embodiment shown in FIG. 1, when a recorded still image is played back, the search image information recording area 26 is used to sequentially search for still images while viewing N still images at once. This makes it possible to play back still images. Furthermore, the third
In the embodiment shown in the figure, since the search image information 23 is continuously recorded in the image information 19, the search image information 23 and the image information 1
Compared to the embodiments described in FIGS. 1 and 2, there is an advantage that image information 19 can be quickly accessed from search image information 23 because the distance between images 9 and 9 on optical disk 24 is short. .

〔Effect of the invention〕

As described above, according to the present invention, it is possible to visually and quickly search for a desired still image from among a large number of still images.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention, FIG. 2(a) is a diagram showing the arrangement pattern of signals on the medium, and FIG. Figure 2(C) is a diagram showing an example of data compression. Figure 2(C) is a diagram showing the arrangement of signals on the medium as well as the δ pattern. Figure 2(d) is the recording area of image information on the medium and the recording of search image information. FIGS. 3(a) and 3(b) are diagrams showing an example in which the recording area in the embodiment shown in FIG. 2 has been changed. 1 is an input video signal, 2 is an A/D converter, 3 is a switch,
4 is a switch, 5 is a control signal, 6 is a control signal, 7 is a memory, 8 is a memory control signal, 9 is a transmission path modulator, 10 is an optical disk drive device, 11 is a D/A converter, 12 is an output video 13 is a transmission path demodulator, 14 is a data compressor, 15 is a switch, 16 is a control signal, 17 is a position code, 18 is a digital image signal, 19 is image information, 20
21 is a display screen, 21 is a search screen, 22 is a data compressed image signal, 23 is search image information, 24 is an optical disc, 25 is an image information recording area, and 26 is a search image information recording area. 〒1 Figure 3 (θ di

Claims (2)

[Claims] (1) a first means for supplying a still image signal; a second means for compressing the still image signal; 1. A recording device comprising: recording means for continuously recording still image signals for a plurality of screens compressed by the means described above on a predetermined portion of the medium. (2) Reproducing the still image signal and the compressed still image signal from a medium in which both the still image signal and the compressed still image signal for multiple screens are recorded. a playback device comprising: means for instructing a search mode; and when the search mode is instructed by the means;
A reproducing apparatus comprising: means for reproducing the compressed still image signal for a plurality of screens.