JP3038732B2 - Still picture videophone - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still picture video phone, and more particularly to an image recording / playback function in a still picture video phone with a still video floppy.

[Conventional technology]

In a conventional still picture video telephone, when recording an image to be transmitted, an amplitude / phase modulated signal sent to a line is recorded / reproduced on a tape recorder as it is.

[Problems to be solved by the invention]

Since the conventional still image video telephone uses a magnetic tape as a recording medium, it takes a long time to search for a target image from a plurality of recorded images.

Further, since an image to be transmitted must be photographed by a camera built in the videophone device, there is a problem that it is difficult to photograph an outdoor image or the like.

[Means for solving the problem]

ADVANTAGE OF THE INVENTION According to this invention, the video telephone main control circuit which controls the main body of a video telephone, the display circuit which outputs an image, the camera which inputs an image, and the recording / playback compatibility with the recording medium of an electronic still camera. A video floppy disk drive of an analog recording system, an input switch for selecting a video signal from the camera and a video signal from the video floppy disk drive and sending the video signal to the videophone main control circuit, Generates a motor control signal to switch between recording and playback,
A video floppy main control circuit for performing control including feedback to the video phone main control circuit for creating and reproducing the ID information, and for converting a video signal from the camera into a modulated signal to a still video floppy. A modulation circuit, an ID information modulation circuit for superimposing the ID information including date and user information on an image modulation signal, a recording signal amplification circuit for sending a modulation signal to be recorded to the video floppy disk drive, and the video floppy A reproduction signal amplification circuit for amplifying a modulation signal reproduced from the head of the disk drive, and a spindle motor of the video floppy disk drive and a stepping motor of the head are controlled based on a control signal from the video floppy main control circuit. A motor control circuit and input of a modulation signal to the head; A still picture television comprising: a head signal changeover switch for switching a force; a demodulation circuit for extracting a video signal from a reproduced modulation signal; and an ID information demodulation circuit for extracting the ID information from the reproduced modulation signal. A telephone device is obtained.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the still picture videophone device of the present invention.

Referring to FIG. 1, a still image videophone device according to the present embodiment includes a videophone main control circuit 4 for controlling the videophone device main body, a display circuit 7 for outputting an image, and a camera 1 for inputting an image. 2 inch video floppy disk drive (hereinafter referred to as DDV) used in electronic still cameras
7, an input switch 2 for selecting a video signal from the camera 1 and a video signal from the DDV 17 to send to the videophone main control circuit 4, and generating and recording / controlling a motor control signal for the DDV 17
A video floppy main control circuit 11 for performing control including switching of reproduction, creation of ID information and feedback of the reproduced ID information to the video telephone main control circuit 4, and a still video floppy (recording medium) for a video signal from the camera 1 An FM modulation circuit 10 for converting the modulation signal into a modulation signal for the ID 8; an ID information modulation circuit 13 for superimposing ID information including date and user information on the modulation signal of the image; The recording signal amplifying circuit 14 to send, and the head 16 of the DDV 17
Signal amplification circuit 18 that amplifies the modulated signal reproduced from
A motor control circuit 21 for controlling a spindle motor of the DDV 17 and a stepping motor of the head 16 based on a control signal from the video floppy main control circuit 11, and a head 16
A head signal changeover switch 15 for switching input / output of a modulation signal to / from an FM signal, an FM demodulation circuit 19 for extracting a video signal from the reproduced modulation signal, and an ID information demodulation circuit 20 for extracting ID information from the reproduced modulation signal. ing.

Next, the operation of the present embodiment will be described. The video signal input from the camera 1 is converted into a digital signal by the A / D conversion circuit 3 when the input changeover switch 2 is switched to the camera 1 side, and is taken into the image memory 5 by the videophone main control circuit 4. At the same time, the D / A conversion circuit 6
Is returned to the analog video signal and sent to the display circuit 7.

When recording an image on the still video floppy disk 8 of the recording medium, the video signal from the camera 1 or the image memory 5
The analog image signal is selected by a recording image changeover switch 9 and input to an FM modulation circuit 10 for recording in accordance with the unified standard of the still video floppy. Modulated into a signal. The video floppy main control circuit 11 stores date data and user information (such as telephone numbers) from the calendar clock 12.
The signal is modulated by the ID information modulation circuit 13, superimposed on the modulation signal from the FM modulation circuit 10, sent to the recording signal amplification circuit 14, the head signal switch 15 is set to the recording side, and the head 16 records on the still video floppy disk 8 I do.

When reproducing the data recorded in the still video floppy 8 and sending it to the videophone main control circuit 4, the video floppy main control circuit 11 operates the head signal changeover switch.
15 is switched to the reproducing side, the reproduced signal read by the head 16 is amplified by the reproduced signal amplifying circuit 18 and sent to the FM demodulating circuit 19, which converts the signal into a video signal. This video signal is sent to the videophone main control circuit 4 through the A / D conversion circuit 3 if the input changeover switch 2 is switched to the video floppy side. Here, the reproduced signal is also sent to the ID information demodulation circuit 20, where the ID information is extracted and fed back to the videophone main control circuit 4. This played
It can be confirmed by displaying the ID information on the display circuit 7.

The spindle motor of the DDV 17 and the stepping motor of the head 16 are controlled by the motor control circuit 21 based on the still video floppy standard by a control signal generated by the video floppy main control circuit.

One field (1/2 frame) of an image can be recorded on one track of the still video floppy 8 (color image with 262 scanning lines), so an image of 50 fields (25 frames) can be recorded on one floppy disk. it can.

〔The invention's effect〕

As described above, the present invention provides a videophone main control circuit for controlling the videophone device main body, a display circuit for outputting an image, a camera for inputting an image, a recording medium of an electronic still camera, and a recording / reproducing system. Compatible analog recording video floppy disk drive, input selector switch to select video signal from camera and video floppy disk drive and send to videophone main control circuit, motor for video floppy disk drive A video floppy main control circuit for controlling recording / reproduction by switching the recording / reproduction, generating ID information and controlling the reproduced ID information including feedback to the video telephone main control circuit, and a still image signal from the camera. Modulation circuit for converting to a modulation signal for video floppy, and date and user information An ID information modulating circuit for superimposing the ID information including the modulating signal on the image, a recording signal amplifying circuit for sending a modulation signal to be recorded to the video floppy disk drive, and a modulation signal reproduced from a head of the video floppy disk drive A signal amplification circuit for amplifying the signal, a motor control circuit for controlling a spindle motor of a video floppy disk drive, a stepping motor of the head, and the like based on a control signal from a video floppy main control circuit, and a modulation signal input to the head. An image is recorded on a floppy disk by including a head signal changeover switch for switching the output, a demodulation circuit for extracting a video signal from the reproduced modulation signal, and an ID information demodulation circuit for extracting ID information from the reproduced modulation signal. Reading and writing are fast and random It has the effect that the processes can be.

In addition, since a still video floppy for an electronic still camera is used, the image captured by the electronic still camera can be directly input, transmitted to a distant place via a videophone, or the image received by the videophone can be passed through the electronic still camera. This has the effect that it can be projected on a home television.

Furthermore, there are effects that various applications can be expected, such as searching for images using ID information, using shooting dates, and organizing images in a floppy using an image memory without a videophone.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the still picture videophone device of the present invention. 1 ... Camera 2 ... Input selector switch 3 ... A / D
Conversion circuit, 4 Videophone main control circuit, 5 Image memory, 6 D / A conversion circuit, 7 Display circuit, 8 Still video floppy, 9 Recorded image changeover switch, 10 ... FM modulation circuit, 11 ... Video floppy main control circuit, 12 ... Calendar clock, 13 ... ID information modulation circuit, 14
…… Recording signal amplifier, 15… Head signal switch, 16… Head, 17… 2 inch video floppy disk drive (DDV), 18… Reproduction signal amplifier, 1
9 ... FM demodulation circuit, 20 ... ID information demodulation circuit, 21 ... Motor control circuit.

Claims (1)

(57) [Claims] 1. A videophone main control circuit for controlling a main body of a videophone device, a display circuit for outputting an image, a camera for inputting an image, a recording medium of an electronic still camera, and a recording / recording device.
A video floppy disk drive of an analog recording system compatible with reproduction, an input selector switch for selecting a video signal from the camera and a video signal from the video floppy disk drive and sending the video signal to the videophone main control circuit, A video floppy main control circuit for generating a control signal for a motor of a video floppy disk drive to switch between recording and reproduction, generating ID information and performing control including feedback of the reproduced ID information to the videophone main control circuit; A modulation circuit for converting a video signal from the camera into a modulation signal for a still video floppy, and an ID information modulation circuit for superimposing the ID information including date and user information on a modulation signal of an image, and recording. A recording signal amplification circuit for sending a modulation signal to the video floppy disk drive; A reproduction signal amplifier circuit for amplifying a modulation signal reproduced from the head of the video floppy disk drive; and a spindle motor of the video floppy disk drive and a stepping motor of the head based on a control signal from the video floppy main control circuit. A motor control circuit for controlling the input and output of a modulation signal to and from the head, a demodulation circuit for extracting a video signal from the reproduced modulation signal, and the ID information from the reproduced modulation signal. A still picture videophone device comprising: an ID information demodulation circuit to be taken out.