JPS6360595B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention uses a magnetic disk (hereinafter referred to as a disk sheet) as a recording medium instead of a photosensitive film, and converts optical information of a subject into an electrical signal and records it on the disk sheet. The present invention relates to an electronic still camera system that combines a still camera and a reproducing device that reproduces signals recorded on a magnetic medium and transmits reproduction signals for displaying on the screen of a television receiver (hereinafter referred to as a TV monitor).

BACKGROUND ART An electronic still camera system has been proposed in which a still image is recorded on a disk sheet by a magnetic head on the electronic still camera side, and this disk sheet is played back by a playback device to project the still image on a TV monitor. .

However, in this electronic still camera system, it is difficult to erase only one track of the information recorded on the disk sheet, and in order to erase the information, all of the information written on the disk sheet must be erased. Therefore, users are requesting to edit still images appropriately from among the many still images recorded by electronic still cameras and to save the edited disk sheets.

This type of editing machine has many functions, but is expensive and is considerably larger and takes up more space than the above-mentioned general playback machine. Therefore, simple playback and editing are desired in such electronic still camera systems.

DISCLOSURE OF THE INVENTION The present invention provides an electronic still camera system that allows such editing functions to be easily performed with a low-cost device by using an electronic still camera and a playback device.

Therefore, in the present invention, an image input to an electronic still camera, which is used exclusively for recording, is converted into an electric signal by an image sensor such as a CCD, and a switch is provided at the part where the signal is input to the recording circuit section, and this switch is switched. Therefore, the system is configured so that either the signal from the optical system or the video information signal output from the playback device can be selected.

As a result, according to the present invention, it is possible to transfer and record the still image reproduced by the reproducing device on the disk sheet on the electronic still camera side, so that simple editing can be performed, which is convenient.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawing shown in FIG.

In the figure, 1 is an electronic still camera, 2 is a playback device, and the conventional circuit excludes the switch circuit SW, the connections A, B, and C between both devices 1 and 2, and the connector 20 that connects both connections. In a conventional electronic still camera, connections as shown in the figure are made without using a switch circuit SW. 3 is an imaging circuit that photoelectrically converts the optical information of the subject and sends out a video information signal, and the circuit 3 includes a synchronization signal generation circuit 4.
is connected to a clock signal that drives an image sensor (not shown) in the image pickup circuit 3, and a synchronization signal that follows the horizontal and vertical synchronization signals in a general television signal.
HD and VD are supplied. 5 is a video processing circuit that processes the video information signal from the imaging circuit 3 and outputs a luminance signal and a color signal, and each output terminal of the circuit 5 is connected to a recording circuit 6 via a switch circuit SW.
It is connected to the. The recording circuit 6 converts the input luminance signal and color signal into recording signals suitable for recording, and supplies them to the magnetic head _H1 via the shutter circuit 7. By pressing the switch _S2 , the shutter circuit 7 selects a recording signal for one field (or one frame) period according to the gate pulse supplied from the single pulse generation circuit, and outputs it to the magnetic head _H1.
supply to. As a result, recording is performed on a predetermined track on the disk sheet 10. In addition, the single pulse generation circuit 8 includes a rotational phase detection head of the motor M1.
The pulse signal detected by _H2 is supplied as a trigger input. M1 is a motor that rotates the disk sheet 10, and is driven by a drive circuit 18, and its rotation is controlled by a servo circuit 11. The servo circuit 11 receives the vertical synchronization signal supplied from the synchronization signal generation circuit 4 via the switch circuit SW and the pulse signal detected by the head _H2 , and provides a control output to the motor M1 according to the phase error. ing. M2 is a motor for moving the track of the magnetic head _H1 . When switch _S1 is pressed, the drive pulse supplied from the pulse generation circuit moves the magnetic head by one track on the disk sheet.
Perform H ₁ movement. S ₀ is a switch that sets the connection mode of each switch in the switch circuit SW. When this switch S ₀ is open, the switch SW is connected as shown in the diagram, and when the switch S ₀ is closed, the switch circuit SW is connected as shown in the diagram. The above is a general description of the electronic still camera 1 connected in the opposite state.

Next, the outline of the playback device 2 will be explained. The switch S ₃ , the pulse generation circuit 17, and the motor M4 correspond to the switch S ₁ , the pulse generation circuit 9, and the motor M2 in the electronic still camera 1, and their explanation will be omitted here. Also, regarding the servo circuit 15, drive circuit 19, and motor M3, the servo circuit 11, drive circuit 18 in the electronic still camera 1
Since this corresponds to motor M1 and motor M1, a description thereof will also be omitted. The reproduction signal reproduced from the disk sheet 20 by the magnetic head _H3 is demodulated by the reproduction circuit 16, and a luminance signal and a color signal are output. The luminance signal and color signal are supplied to a video signal forming circuit 12, where the video signal is supplied to a monitor television 13 through well-known signal processing. On the other hand, the luminance signal and color signal output from the reproduction circuit are branched and supplied to a switch circuit SW in the electronic still camera 1.

Next, the operation shown in FIG. 1 will be explained.

When the connector 21 is separated into the electronic still camera 1 side and the playback device 2 side, the explanation will be made assuming that the switch _S0 is in an open state on the electronic still camera side. Now, by pressing switch S ₂ , the recording signal for one field is recorded on the disk sheet 10, and by pressing switch S ₁ , the recording signal for motor M2 is recorded.
rotates, the magnetic head _H1 moves, and the position of the track is changed. In this case, the electronic still camera 1 records optical information of the subject on the disk sheet 10 like a general still camera. On the other hand, the reproducing device 2 supplies a video signal for one field to the monitor television 13 based on the reproduction signal reproduced from the disk sheet 20, and a still image is displayed on the monitor television 13. At this time, when the switch _S3 is pressed, the motor M4 rotates, the magnetic head _H3 moves, the track is changed, and the still image displayed on the monitor television is also changed accordingly.

Next, a case will be described in which the connector 21 is connected and simple editing is performed. Since the electronic still camera 1 is used only for recording, it is better to use a disk sheet 10 that does not record, or a disk sheet that allows the recorded contents to be erased. In this case, close switch S ₀ on the electronic still camera 1 side,
Connect each switch in the switch circuit SW to the opposite side as shown. On the playback device 2 side, press the switch _S3 repeatedly to move the magnetic head _H3 , change the playback track on the disk sheet 20, and sequentially change the still images displayed on the monitor TV 13 until the still image you want to keep is displayed. When the signal is output, the switch _S2 on the electronic camera 1 side is pressed to supply a gate pulse to the shutter circuit 7, and the servo circuit 11 is controlled by the synchronization signal supplied from the player 2 side. A recording circuit 6 converts the brightness signal and color signal into recording signals, and then records the converted recording signals on a disk sheet 10. Next, the switch _S1 is pressed to move the position of the magnetic head _H1 on the electronic still camera 1 side to change the recording track on the disk sheet 10, and simple editing is performed by repeating the above-mentioned operations.

As explained above, according to the present invention, it is possible to record still image information from a playback device using a recording-only electronic still camera, and simple editing of still images can be performed simply by combining the electronic still camera and the playback device. Therefore, it is practical.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of the present invention. 1...Electronic still camera, 2...Player, SW...Switch means, 13...Monitor television, 21...Coupling means.

Claims (1)

[Scope of Claims] 1. An electronic still camera that converts a first video signal based on optical information of a subject into a recording signal and records it on a magnetic disk; and a second video signal that reproduces the recorded magnetic disk. an electronic still camera system in combination with a playback device that transmits a playback signal for displaying the second video signal on a monitor television; An electronic still camera system comprising: a switch means for selectively taking out the signal and a second video signal; and a coupling means for taking out the second video signal from the playback device and inputting it to the switch means. .