JPH01226288A - Telephone terminal equipment - Google Patents

Abstract

PURPOSE:To transmit a reproduced picture without performing trouble-some work by providing a video signal input terminal connected to a video signal output device and displaying a video corresponding to an impressed video signal on the video displaying part when the video signal is impressed to said input terminal. CONSTITUTION:When a connector 25 is connected to the video signal input terminal 20, the video signal reproduced by a VTR 19 is sent to a device main body 16, and it is detected by a video signal input detecting part 21 that the video signal wave inputted, and a video display selector switch 15 is switched to D side, and a signal input part selector switch 22 is switched to F side. Accordingly, on a video displaying part 2, the video signal reproduced and outputted by the VTR 19 is displayed through a first video memory 13. After a video to be displayed comes to be a desired state, the video signal is transmitted to a remote party side by operating the picture sending button 3 of the device main body 16.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a telephone terminal device, such as a video telephone, which transmits and receives video and audio via a telephone line.

2. Description of the Related Art Conventionally, for example, there have been videophones that transmit and receive audio and video via telephone lines, but in recent years this type of device has been attracting attention as the amount of information has increased.

A video telephone, which is an example of this type of telephone terminal device, will be described below.

Fig. 3 is a perspective view of a conventional video telephone, and Fig. 4 is a block diagram showing its circuit configuration.
2 is a video display section consisting of a CRT (cathode ray tube), a liquid crystal display panel, etc.; 3 is a video input section that transmits the video captured by the video input section 1 to a telephone line; There is a send button that you operate when sending the image to the other party via the . 4 is a video display selection button for selecting whether the video displayed on the video display unit 2 is that of the operator or the other party; 5 is a telephone line; 6 is a line interface unit; 7 is an incoming telephone line. The signal flow is transferred to the audio side (
An audio signal/video signal changeover switch 8 switches between the audio side (A) and the video side (B). When the audio signal/video signal changeover switch 7 is connected to the audio side (A), the signal is sent from the other party via the telephone line. 9 is a video signal discriminator that detects whether or not there is a video signal in the signal being received, and when there is a video signal, it sends a signal indicating this to the audio signal/video signal changeover switch 7. An audio output section such as a speaker, 10 an audio input section such as a microphone, 11 a video signal modulation section that modulates the video signal taken in by the video input section 1 into a signal that can be transmitted over a telephone line, and 12 a telephone line. 13 and 14 are respectively a first video memory and a second video memory; 15 is an image displayed on the video display section 2; This is a video display changeover switch that switches the signal flow between the video input section 1, that is, the (D) side, and the video signal demodulation section 12, that is, the (C) side.

The operation of the conventional video telephone configured as described above will be explained below. It is assumed that a plurality of telephone terminal devices having the above configuration are connected via a telephone line.

First, in the initial state, the audio signal/video signal changeover switch 7 is set to the audio side (A>), and the video display changeover switch 15 is set to (A>).
D) side. When a call is made or received in this state, the calling party and the called party are connected via the telephone line, and then normal voice communication is possible with each other through the voice output section 9 and the voice input section 10. Become. In this state, the video display unit 2 displays the operator's video captured by the video input unit 1. When the operator sends images,
By confirming the video captured by the video input unit 1 on the video display unit 2 and then pressing the video feed button 3, the audio signal/video signal changeover switch 7 operates, and the signal flow is switched to the audio side ( The video information inputted into the first video memory 13 by the video input section 1 after switching from A) to the video side (B) is modulated by the video signal modulation section 11 into a signal that can be transmitted over a telephone line. Thereafter, the modulated video signal is sent to the other party via the telephone line 5 from the line interface section 6 with a signal for audio/video switching added to the beginning. When the video signal for one screen has been sent out, the audio signal/video signal changeover switch 7 is automatically switched from the video side (B) to the audio side (A). On the other hand, the video signal discriminator 8 of the telephone terminal device of the other party
A video switching signal is detected, and the detection signal is sent to the audio signal/video signal switching switch 7 and the video display switching switch 15. Thereafter, the audio signal/video signal switching switch 7 is switched from the audio side (A> to the video side (B), the video display switching switch 15 is switched from the (D) side to the (C) side, and the video signal demodulation section 12 switches the video signal is demodulated and stored in the second video memory 14,
It is displayed on the video display section 2. When the reception of the video signal for one screen is completed, the audio signal/video signal changeover switch 7 is automatically switched to the audio side (A).

On the other hand, when a video is sent from the other party, the same process as described above is performed, and the received video is displayed on the video display unit 2 on the user's side.

After that, if you want to display the video from your side, by operating the video display selection button 4, the video display changeover switch 15 is switched to the (D) side, and the video display section 2 again receives the first video from the video input section 1. The video captured in the memory 13 will be displayed.

Furthermore, if you want to send out the video signal sent via the telephone line and stored in the second video memory 14, first operate the video display selection button 4 and switch the video display changeover switch 15 to the (C) side. The video signal stored in the second video memory is displayed on the video display section 2. Thereafter, by operating the image sending button 3, the video signal is modulated by the video signal modulation section 11 as described above and sent to the telephone line 5 via the line interface section 6.

After the video transmission ends, the audio signal/video signal changeover switch 7 automatically returns to the audio side (A).

Problems to be Solved by the Invention However, when transmitting image information recorded on a videotape or the like in the telephone terminal device having the above-described configuration, the image is played back and displayed on a separately prepared television receiver, etc. It was necessary to move the main terminal device body close to the television receiver and place the video input section facing the video display surface of the television receiver, which had the problem that this work was troublesome. .

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a video signal input terminal which can be connected to a video signal output device to receive a video signal, and a video signal input terminal to which a video signal is applied. a detecting means for detecting that the detecting means outputs a detection signal; and control means for controlling the image data to be stored in the video memory.

Effect: With the above-described configuration, the present invention can automatically reproduce the reproduced image on the video display section when image information reproduced by a video tape recorder or the like is imported into the main body of the apparatus, without requiring any troublesome work. It becomes possible to send the reproduced image to.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a video telephone and a video tape recorder which are examples of a telephone terminal device and an external image reproducing device in an embodiment of the present invention.

Moreover, FIG. 2 is a block diagram showing the circuit configuration.

In this embodiment, the same components as those in the conventional configuration described above are given the same numbers, and detailed explanation thereof will be omitted.

In the figure, 16 is the main body of the device, inside which there is a CCD.
A video input section 1 made up of a charge-coupled device (charge coupled device), an image pickup tube, etc., a video display section 2 made up of a CRT (cathode ray tube), a liquid level display panel, etc., an image feed button 3, and a video display selection button. 4, a line interface section 6, an audio signal/video signal changeover switch 7, a video signal discrimination section 8, an audio output section 9 such as a speaker, an audio input section 10 such as a microphone, and a video signal modulation section 11. , a video signal demodulator 12 that demodulates the video signal, and first and second video memories 1
3.14, a video display changeover switch 15, an image playback section 17, and an image playback button 18 that is operated when playing back images.
video signal input terminal 20 for connecting the
, a video signal input detection section 21 that determines whether a video signal from the VTR 19 is being sent to the device main body 16 via the video signal input terminal 20, and a video display section 2.
The flow of the video signal displayed on the video input section 1 side (E
) side and the VTR 19 side, that is, the (F) side, and the video signal discrimination section changeover switch 22 are connected to the (F) side, the video signal flow is switched to the (E) side. The switch button 23 is operated when switching to the switch button 23.

24 is a video signal transmission cable for sending the video signal reproduced and output from the VTR 19 to the main body 16 of the apparatus, and 25 is a connector connected to the video signal input terminal.

Next, the operation will be explained.

First, the connector 25 is connected to the video signal input terminal 20. In this state, if the video signal played and output by the VTR 19 is not sent to the device main body 16, the signal input section changeover switch 22 is connected to the (E) side, and the video display section 2 is connected to the video input section 2. The video signal taken in from part 1 is displayed. If the operator making the call in this state wants to send a video to the other party, the same process as in the conventional example can be used.

Furthermore, when the operator wishes to send image information recorded on a videotape or the like, by operating the image playback button 18, the image is played back on the VTR 19 and the video signal is sent to the main body 16 of the apparatus. At that time, the video signal input detection section 2
1, it is detected that a video signal has been input, and the detection signal is sent to the video display changeover switch 15 and the signal input section changeover switch 22, and as a result, the video display changeover switch 15 is switched to the (D) side, and the signal input The section changeover switch 22 is switched to the (F) side.

Therefore, the video signal reproduced and output by the VTR 19 is displayed on the video display section 2 via the first video memory 13. When the displayed image is in a desired state, the same operation as described above is performed by operating the image sending button 3 on the device main body 16, and a video signal is sent to the other party. Thereafter, the image is played back on the video display section 2 again, and a new image can be sent by performing the same operation as described above. Further, when the switching button 23 is operated after the video signal transmission is finished, the signal input section changeover switch 22 is switched to the (E) side, and the video signal from the video input section 1 is displayed on the video display section 2 again.

As a result, when you want to send an image signal recorded on a videotape or the like, you can play and display the image on a television receiver, etc. specially prepared for the VTR 19, and place the device body 16 near the television receiver. There is no need to go out of your way to move it, which greatly improves operability.

Furthermore, by reproducing the image signal with the VTR 19 and sending it to the device main body 16, the image is automatically displayed on the video display section 2, so you can confirm the image you want to send while sending it, and the signal input section from video input section 1 to VTR 19
There is no need to perform any work to switch to the current mode, resulting in even better operability.

Although the description has been made regarding a telephone terminal device that transmits and receives still image signals, it is also effective for telephone terminal devices that transmit and receive moving image signals due to the development of integrated digital circuit networks.

Effects of the Invention As described above, the present invention provides a video signal input terminal that can be connected to a video signal output device to receive a video signal, and a detection means that detects that a video signal is applied to the video signal input terminal. , when a detection signal is output from the detection means, controls the video display section to display a video corresponding to the video signal applied to the video signal input terminal, and stores the video signal in the video memory. By being equipped with a control means that controls the image information reproduced by a video tape recorder, etc., when it is imported into the main body of the device, this reproduced image can be automatically reproduced on the video display section, and the troublesome work can be avoided. It is now possible to send the reproduced image without performing the above operations, and a telephone terminal device with extremely good operability can be realized.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a video telephone and a VTR which are telephone terminal devices according to an embodiment of the present invention, Fig. 2 is a block diagram showing the circuit configuration thereof, and Fig. 3 is an example of a conventional telephone terminal device. FIG. 4, a perspective view of a video telephone, is a block diagram showing its circuit configuration. 1...Video input section 2...Video display section 3...Picture sending button 4...Video display selection button 5...Telephone line 6...Line interface section 7...
Audio signal/video signal switching switch 8...Video signal discrimination section 9...Audio output section 10...Audio input section 11...Video signal modulation section 12 ...Video signal demodulation unit 13...First video memory 14...Second video memory 15...Video display changeover switch 16...
...Device body 17...Image playback unit 18...Image playback button 19...Video tape recorder 20...
...Video signal input terminal 21...Video signal input detection section 22...
・Signal input section changeover switch 23...Switching button 24...Hideo signal transmission cable 25...
・Name of connector agent Patent attorney Toshio Nakao and 1 other person 1st plan

Claims (1)

[Claims] (1) A line interface section connected to a telephone line, a video input section, a video display section, a video memory that stores the signal output from the video input section, and a video signal output from the video memory. a video signal modulation unit that modulates the signal into a signal that can be transmitted over the telephone line; a video signal demodulation unit that demodulates the modulated video signal sent through the telephone line;
a video signal input terminal to which a video signal output device can be connected and which enables reception of a video signal from the video signal output device; a detection means for detecting that a video signal is applied to the video signal input terminal; When a detection signal is output from the detection means, the video signal is controlled to be displayed on the video display unit in accordance with the video signal applied to the video signal input terminal, and the video signal is stored in the video memory. A telephone terminal device comprising: a control means for controlling the telephone terminal;