JPH04101586A - Still picture recording/reproducing equipment - Google Patents

Abstract

PURPOSE:To attain miniaturization and low cost by recording a video signal for each field, which has been recorded in the memory of an imaging device, in a recording/reproducing medium during recording, recording a video signal for one field reproduced in an adapter memory during reproduction and preparing a frame picture after switching to a still video signal for a remaining one field. CONSTITUTION:An imaging device 3 acts as a memory which accumulates frame pictures. First, a video signal for one field is output and recorded in one track in a recording/reproducing medium 8. When a magnetic head 33 has transferred to another track, a video signal for a remaining one field is output from the imaging device 3 and recorded. During reproduction, a signal for one field is reproduced from one of the tracks in a recording/reproducing medium 8 and recorded in an adapter 34. Then, the magnetic head 33 reproduces a signal for a remaining one field and outputs to an I/O circuit 36, and a system control circuit 38 for adapter switches two field signals to prepare the frame picture.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to still image recording and reproducing equipment equipped with a still image recording and reproducing device for recording and reproducing still image video signals on a recording and reproducing medium.

BACKGROUND OF THE INVENTION In recent years, as still image recording and reproducing devices, there has been an active commercialization of video recording and reproducing devices using magnetic tape as a recording and reproducing medium and electronic still cameras that use magnetic disks as a recording and reproducing medium, with high image quality and miniaturization.

The low price is the main point of the product.

Taking an electronic still camera as an example, conventional still image recording and reproducing equipment will be explained based on the block diagram of FIG.

Conventional still image recording and reproducing equipment is an electronic still camera device.
and an output device 13 such as a television monitor or video printer.
It is composed of.

The electronic still camera device 1 will be explained.

Lens section 2 consisting of a lens, aperture, shutter, etc.
The object image focused by is controlled by the element drive circuit 5,
An image is formed on the driven image sensor 3 and converted into an electrical signal. FIG. 2 shows a configuration diagram of the image sensor 3.

The light receiving section 21 of the image sensor 3 is formed of a photodiode 22 that receives light and converts a subject image into an electrical signal, and a vertical transfer section 23 that transfers signal charges generated by the photodiode 22 in the vertical direction of the light receiving section 21. The signal charge generated by the light receiving section 21 is transferred from the vertical transfer section 23 to the horizontal transfer section 24, passes through the signal amplifier 25, is output from the output terminal 26, and is input to the recording circuit 4 in FIG. be done.

The recording circuit 4 performs separation of the video signal input from the image sensor 3 into a luminance signal and a color signal, γ correction, line sequentialization of the color difference signal, FM modulation, etc., and records the processed still image video signal. The signal is input to a reproduction amplifier 6 and recorded on a recording/reproducing medium 8 by a magnetic head 7 . FIG. 5 shows a schematic diagram of the magnetic head 7.

The magnetic head 7 is composed of two heads 7A and 7B arranged at an interval of two tracks on the recording and reproducing medium 8 in order to record and reproduce frame images. 9 and is moved by a stepping motor 10 to a predetermined track of the recording/reproducing medium 8 in the direction shown by arrow A. In FIG. 4, reference numeral 11 denotes a drive circuit 11 for controlling and driving the stepping motor 10. As shown in FIG.

The still image video signal reproduced by the magnetic head 7 is amplified by the recording/reproducing amplifier 6 and input to the reproducing circuit 12. The reproducing circuit 12 performs FM demodulation of the reproduced still image video signal, reproduced luminance signal processing, reproduced color signal processing, and processing of mixing the luminance signal and the color signal to convert it into a composite video signal,
This processed composite video signal is output to an output device 13.
Output to.

In FIG. 4, reference numeral 14 denotes a recording and reproducing system control circuit 14 that performs timing control of the electronic still camera device 1 and the like.

In this way, the subject image is input to the image sensor 3, subjected to recording signal processing, and then recorded as a frame image on the recording/reproducing medium 8 over two tracks by the two magnetic heads 7A and 7B. The magnetic heads 7A and 7B reproduce the signal, process the reproduced signal, and output the frame image to the output device 1.
3 is output.

Problems to be Solved by the Invention However, the conventional still image recording and reproducing equipment required two magnetic heads 7A and 7B to record and reproduce frame images, which led to the problem that the equipment was expensive. . Therefore, when trying to use only one magnetic head 7, when recording,
During reproduction, the magnetic head 7 is moved to another track on the recording/reproducing medium 8 at a speed of 1/60sec #16.6 m.
It will be determined whether it is necessary to do so within sec. However, with current technology, it takes more than 20 msec for the magnetic head 7 to move and stabilize using the stepping motor 10, which requires an image memory larger than the field capacity. There was a problem that was hindering the miniaturization and low price of the device.

The present invention solves the above problems and is small in size.

The object of the present invention is to provide still image recording and reproducing equipment that is inexpensive and includes a still image recording and reproducing device that can record and reproduce frame images.

Means for Solving the Problems In order to solve the above-mentioned problems, the still image recording and reproducing equipment of the present invention has an image sensor having a built-in memory with a capacity equal to or more than 1 field, and the still image recording and reproducing equipment of the present invention has a built-in image sensor with a built-in memory of a capacity equal to or more than 1 field. a still image recording/reproducing device comprising a recording means for recording a video signal on a recording/reproducing medium for each field, and a reproducing means for reproducing the video signal recorded on the recording/reproducing medium for each field; Built-in memory with a capacity of
One field of the video signal reproduced by the still image recording and reproducing device is stored in this memory, and the stored video signal and the remaining one field of video signal reproduced by the still image recording and reproducing device are switched to form a frame. It is equipped with an adapter for creating and outputting images.

Operation With the above configuration, during recording, the still image recording and reproducing device records the video signal recorded in the memory of the image sensor on the recording and reproducing medium for each field, and during reproducing, the adapter records and reproduces still images in the memory of the adapter. 1 video signal played by the device
A frame image is created and output by recording a field and switching with the still image video signal for the remaining one field reproduced by a still image recording/reproducing device.

EXAMPLE An example of the present invention will be described below with reference to the drawings. Note that the same components as those in FIG. 4 of the conventional example are given the same reference numerals and explanations will be omitted.

FIG. 1 is a block diagram of still image recording and reproducing equipment in one embodiment of the present invention.

The still image recording and reproducing equipment of the present invention is composed of an electronic still camera device 31, an adapter 34, and an output device 13.

First, the electronic still camera device 31 will be explained.

The subject image focused by the lens unit 2 is formed on the image sensor 3 and converted into an electrical signal. The configuration of the image sensor 3 is the second
As shown in the figure, if the lens section 2 is shielded from light, it operates as a memory that stores frame images, and the element drive circuit 32 outputs the video signals for the field (1), and after an arbitrary period of time has elapsed. , outputs the video signal for the remaining one field.

The recording circuit 4 performs separation of the video signal input from the image sensor 3 into a luminance signal and a color signal, γ correction, line sequentialization of the color difference signal, FM modulation, etc., and records the processed still image video signal. The signal is input to the reproduction amplifier 6 and recorded on the recording/reproducing medium 8 by the magnetic head 33 . Figure 3 shows the magnetic head 33.
A schematic diagram is shown.

There is one magnetic head 33, attached to the moving shaft 9, and moved by a stepping motor 10 to a predetermined track on the recording/reproducing medium 8 in the direction shown by arrow B.

The still image video signal reproduced by the magnetic head 33 is amplified by the recording/reproducing amplifier 6 and input to the reproducing circuit 12 . The reproduction circuit 12 performs FM demodulation, reproduction luminance signal processing, reproduction color signal processing, and processing of mixing the luminance signal and chrominance signal to convert it into a composite video signal, and outputs the processed composite video signal to the adapter 34. . In FIG. 1, numeral 35 is a recording/reproducing system control circuit that performs timing control of the electronic still camera device 31 and the like.

The adapter 34 includes an input/output circuit 36 that connects and switches between the electronic still camera device 31 and the output device 13, and has a capacity equal to or larger than the capacity for one field of composite video output from the playback circuit 12. It consists of an image memory 37 for recording signals, and an adapter system control circuit 38 that is connected to a recording/reproduction system control circuit 35 and performs timing control of the adapter 34 and the like.

The operation will be explained below.

During recording, the image sensor 3 captures a subject image and then operates as a memory that stores frame images by shielding the lens section 2 from light. First, one field of video signal is output, and then one field of the video signal is output to one of the recording/reproducing media 8. It is recorded on the track as a still image video signal. When the magnetic head 33 has completed moving to another track, the recording/reproducing system control circuit 3
When the movement completion signal output from 5 is input to the image sensor 3 via the element drive circuit 32, the image sensor 3 outputs the video signal for the remaining one field stored.
The signal is recorded on the recording/reproducing medium 8 as a still image video signal. With the above operations, a frame image is recorded onto the recording/reproducing medium 8 using one magnetic head 33.

At the time of reproduction, first, one field worth of signals is reproduced from one track of the recording/reproducing medium 8, and is stored in the image memory 37 of the adapter 34. Thereafter, the magnetic head 33 moves to the remaining track where one field has been recorded, reproduces the signal recorded on that track, and outputs it to the input/output circuit 36, and the system control circuit 38 for the adapter. is the recording/reproducing system control circuit 35
Upon receiving the frame signal reproduction completion signal from the input/output circuit 36
and controls the image memory 37 to switch the two field signals input to the input/output circuit 36 to create a frame image and output it to the output device 13.

As described above, according to this embodiment, during recording, the image sensor 3
By using the image memory 37 of the adapter 34 during playback, it is possible to stably record and play back frame images even with just one magnetic head 33, and the electronic still camera device 31 does not require a special image memory. Since this is not necessary, it is possible to downsize and reduce the cost of still image recording and reproducing equipment.

As described in detail, according to the present invention, by using the memory of the image sensor during recording and the image memory of the adapter during playback, a single magnetic head with a simple configuration can stably produce high image quality. Since frame images can be recorded and played back, and the still image recording and playback device does not require any special image memory, the still image recording and playback equipment can be made smaller and lower in price, which is extremely effective. big.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of still image recording and reproducing equipment according to an embodiment of the present invention, FIG. 2 is a configuration diagram of an image sensor, and FIG. 3 is a block diagram of a magnetic head of still image recording and reproducing equipment according to an embodiment of the present invention. FIG. 4 is a block diagram of a conventional still image recording and reproducing equipment, and FIG. 5 is a schematic diagram of a magnetic head of the conventional still image recording and reproducing equipment. 2... Lens section, 3... Image pickup element, 4... Recording circuit, 6... Recording and reproducing amplifier, 8... Recording and reproducing medium,
11... Drive circuit, 12... Reproduction circuit, 13...
Output device, 31... Electronic still camera device, 32...
- Element drive circuit, 33... Magnetic head, 34... Adapter, 35... System control circuit for recording and reproduction, 36... Input/output circuit, 37... Image memory, 3
8...System control circuit for adapter.

Claims (1)

[Claims] 1. A recording means having an image sensor having a built-in memory having a capacity of one field or more, and recording a video signal stored in the memory of the image sensor on a recording/reproducing medium every one field, and the recording/reproducing medium. The video signal recorded in 1
The still image recording and reproducing device includes a still image recording and reproducing device provided with a reproducing means for reproducing each field, and a memory having a capacity for one field or more, and stores one field worth of video signals reproduced by the still image recording and reproducing device in this memory. and an adapter that switches between the stored video signal and the remaining one field worth of video signal reproduced by the still image recording and reproducing device to create and output a frame image.