JPH04298171A - Electronic still camera system - Google Patents

Abstract

PURPOSE:To eliminate a mis-operation and a trouble someness after an electronic still camera is loaded to an adaptor by connecting usually a reproduction system or recording system circuit of the adaptor to an external video output or an input terminal and selecting the circuit automatically at the loading of the electronic still camera. CONSTITUTION:When an electronic still camera is connected to the adaptor by a device coupling means, a connection detection circuit 26 outputs a connection detection signal. The contact of a recording system changeover switch 13 and a reproduction system changeover switch 14 is thrown as shown in solid lines. As a result, an input of a recording circuit 3 of the electronic still camera is connected to an adaptor side video signal recording processing circuit 22 and an output of the reproduction circuit 12 is connected to a video signal reproduction processing circuit 24 and a picture data is sent/received between the external video input output terminal and the electronic still camera.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to an electronic still camera system that can reproduce captured images on a monitor by attaching an electronic still camera to an adapter. The present invention relates to an electronic still camera system in which a video input or output terminal side circuit is automatically switched to an electronic still camera circuit side.

0002

2. Description of the Related Art A system in which an electronic still camera is attached to an adapter has been put into practical use in order to immediately reproduce images taken with an electronic still camera without complicated operations. In this system, the adapter has a built-in video signal playback processing circuit, and when an electronic still camera is attached, the playback circuit output on the camera side is connected to the video signal playback processing circuit, and the image on the video floppy of the electronic still camera is transferred to the adapter. Output to the monitor via the external video output terminal. The above-mentioned adapter may be equipped with a video floppy drive, taking into account dubbing to electronic still cameras. This is because it is possible to record from the external video input terminal not only to the electronic still camera but also to the adapter, and it is also possible to play back images from the electronic still camera and the adapter.

0003

However, the ability to record and play back both the electronic still camera and the adapter complicates the operation, leading to erroneous operations and confusing the user. The purpose of the present invention is to connect an electronic still camera to an adapter by automatically switching the circuit when the adapter's playback system or recording system circuit is normally connected to an external video output or input terminal when an electronic still camera is attached. To provide an electronic still camera system that eliminates errors and troublesome operations after mounting.

0004

[Means for Solving the Problems] In order to achieve the above object, an electronic still camera system according to the present invention connects an electronic still camera and an adapter having a video floppy drive. An electronic still camera system capable of inputting and outputting image signals to a video input/output terminal, the system comprising a device coupling means for connecting the electronic still camera and the adapter, and detecting an electrical connection between the electronic still camera and the adapter. It includes a connection detection circuit and a switching circuit that switches between the recording/playback circuit of the electronic still camera and the adapter, and when the electronic still camera is not connected to the adapter, the recording/playback circuit of the adapter is switched to the video recording/playback circuit. is connected to a terminal side circuit, and when the electronic still camera is connected, the video terminal side circuit of the adapter is switched and connected to the recording/playback system circuit of the electronic still camera by the output of the connection detection circuit. It is configured.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in more detail below with reference to the drawings and the like. FIG. 1 is a circuit block diagram showing an embodiment of an electronic still camera system according to the present invention. The part above the dotted line is the circuit part on the electronic still camera side, and the part below the dotted line is the circuit part on the adapter side. Electronic still cameras and adapters commonly have floppy disk drives. On the electronic still camera side, there are a servo circuit 5, a drive circuit 6, and a motor 7 as circuits related to the floppy disk drive.
, a head drive circuit 9, and a magnetic head 10 are provided. The servo circuit 5 sends a control signal to the drive circuit 6 based on the synchronization signal from the synchronization signal generator 11. A drive circuit 6 drives a motor 7 to rotate a video floppy 8. The servo circuit 5 receives a PG signal sent from a PG pickup sensor (not shown) as the video floppy 8 rotates, and drives the drive circuit 6 so that the video floppy 8 has a predetermined rotation and phase.

The head drive circuit 9 drives the magnetic head 10 and positions it on the 1st to 50th tracks of the video floppy 8 to be reproduced or recorded. The servo circuit 16, drive circuit 17, motor 8, head drive circuit 9, and PG pickup sensor (not shown) on the adapter side also operate in the same manner as described above. The servo circuit 5 and the head drive circuit 9
The head drive circuit 20 and the head drive circuit 20 are each activated by a command from the CPU 15.

When photographing a subject with an electronic still camera, an electrical signal of the subject is sent from the imaging circuit 1 to the video processing circuit 2.
is input. The video processing circuit 2 adds a synchronization signal and the like to create a predetermined video signal. The recording circuit 3 performs FM modulation on the video signal and then records it on a predetermined track of the video floppy 8. Connection point A in the figure is not connected. Furthermore, when an electronic still camera is not connected to the adapter, the contacts of the recording system changeover switch 13 and the playback system changeover switch 14 are turned to the dotted line side, and the playback circuit 25 and video signal recording processing circuit 22 are Further, a recording circuit 23 and a video reproducing circuit 24 are connected to each other. When recording, the image signal inputted from the external video input terminal is subjected to predetermined processing in the video signal recording processing circuit 22, and then FM modulated by the recording circuit 23, and is output to a predetermined location on the video floppy 19 on which the magnetic head 21 is positioned. recorded on the track. When reproducing, the image information of a predetermined track of the video floppy 19 is read out and demodulated by the reproducing circuit 25, subjected to predetermined processing by the video signal reproducing processing circuit 24, and then outputted to an external video output terminal.

When the electronic still camera is coupled to the adapter by the device coupling means, the connection detection circuit 26 outputs a connection detection signal. The contact points of the recording system changeover switch 13 and the playback system changeover switch 14 are switched to the positions shown by solid lines in response to the connection detection signal. Due to the operation of the switching circuit described above, the reproduced image of the image taken in the electronic still camera can be output to the external video output terminal simply by attaching the camera. Furthermore, image signals can be input to the electronic still camera from the external video input terminal.

FIGS. 2(a) and 2(b) are diagrams showing an example of the above-mentioned connection detection circuit. In FIG. 2(a), a device coupling means convex portion 27 is provided on the bottom of the camera 40, and a device coupling means recess 28 is provided on the top surface of the adapter. A connection detection switch 29 that is turned on when pressed by the bottom of the camera 26 is arranged on the adapter side. One end of the switch 29 is connected to ground, the other end is connected to a resistor 30, and the other end of the resistor 30 is connected to VBB. camera 2
6 is coupled to the adapter, the switch 29 is turned on, the high level at point B becomes low level, and a connection detection signal is output.

In FIG. 2(b), a device coupling means protrusion 32 is provided on the bottom of the camera 31, and a device coupling means recess 33 is provided on the top surface of the adapter. A connection terminal 36 is provided on the adapter side, and one end of the connection terminal 36 is connected to a resistor 34 whose end is connected to VBB. Further, a grounded connection terminal 35 is provided on the camera 31 side. When the camera 31 is connected, the connecting terminals 35 and 36 are connected, and the C
The high level at the point becomes low level, and a connection detection signal is output. In addition, it is also possible to confirm the connection by communicating between the CPU 4 on the electronic still camera side and the CPU 15 on the adapter side, and supply a connection detection signal to each changeover switch. Note that, irrespective of the automatic switching according to the present invention, the changeover switch 1 can be forced manually.
3 and 14 can also be switched.

[0011]

[Effects of the Invention] As explained above, in the present invention, by connecting an electronic still camera to an adapter having a video floppy drive, the external video terminal side circuit of the adapter is switched and connected to the electronic still camera side circuit. The effect is that recording to an electronic still camera from the external video input terminal or outputting electronic still video to the external video output terminal can be performed without any complicated operations. There is.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram showing an embodiment of an electronic still camera system according to the present invention.

FIG. 2 is a schematic diagram showing each example of a connection detection circuit.

[Explanation of symbols]

1...Imaging circuit 2...Video processing circuit 3, 23...recording circuit 4...CPUA 5, 16... Servo circuit 6, 17...Drive circuit 7, 18...Motor 8,19...Video floppy 9, 20...Head drive circuit 10, 21...Magnetic head 11...Synchronization signal generator 12, 25...Regeneration circuit 13... Recording system selector switch 14...Reproduction system selector switch 15...CPUB 22...Video signal recording processing circuit 26…Connection detection circuit

Claims (1)

[Claims] 1. An electronic still camera system that is capable of inputting and outputting image data to the video floppy of the electronic still camera to a video input/output terminal on the adapter side by connecting the electronic still camera and an adapter having a video floppy drive, the system comprising: A device coupling means for connecting the electronic still camera and the adapter, a connection detection circuit for detecting an electrical connection between the electronic still camera and the adapter, and a switching circuit for recording/reproducing the electronic still camera and the adapter. When the electronic still camera is not connected to the adapter, the recording/playback circuit of the adapter is connected to the video terminal side circuit, and when the electronic still camera is connected, the recording/reproducing circuit of the adapter is connected to the video terminal side circuit. . An electronic still camera system, characterized in that the video terminal side circuit of the adapter is switched and connected to the recording/reproducing circuit of the electronic still camera by the output of the connection detection circuit.