JPH01149663A - telephone terminal equipment - Google Patents

Abstract

PURPOSE:To enable a substance to be filmed being at a distant place to be freely sent by making a video unit having an video input part and a finder possible to be disconnected from a device main body. CONSTITUTION:When the video of an operator who telephones is sent to a companion, it is executed in a state that the video unit 15 is hung to a video unit holding member 18 at the side surface of a video display part 2. When the substance to be filmed is at the distant position from the device main body 14 and it cannot be filmed even by moving a tilt stand 19, the unit 15 is removed from the member 18 at the side surface of the display part 2 and only the unit 15 is brought to the position of the substance to be filmed. Then, desired framing is executed by looking the finder of the video unit and a video transmitting button 3a is operated.

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, as the amount of information has increased, this type of device has been attracting attention.

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; This is the send button that you operate when sending an image to the other party via the . 4 is a telephone line, 5 is a line interface unit, 6 is an audio signal/video signal changeover switch that switches the flow of signals arriving on the telephone line between the audio side <A) and the video side (B), and 7 is the audio signal/video signal switch. When the signal changeover switch is connected to the audio side, this is a video signal discriminator that detects whether there is no video signal in the signal sent from the other party via the telephone line, and if there is a video signal, it is detected. A signal indicating this is sent to the audio signal/video signal changeover switch 6. β is an audio output unit such as a speaker; 9 is an audio input unit such as a microphone; 10 is a video signal modulation unit that modulates the video signal taken in by the video input unit 1 into a signal that can be transmitted over the telephone line 4; 11 is a video signal demodulation unit that demodulates a modulated video signal sent via the telephone line 4, and 12 and 13 are first video memories.

This is the second video memory.

The operation of the conventional video telephone configured as described above will be explained below.

First, in the initial state, the audio signal/video signal changeover switch 6 is connected to the audio side (A>. When a call is made or received in this state, the calling party and the called party are connected via the telephone line. After the connection is established, normal audio communication becomes possible between the audio output section 8 and the audio input section 9.In this state, if you want to send a video, first place the subject in front of the video input section 1, and then send the video. By pressing the image button 3, the audio signal/video signal changeover switch 6 is operated to switch the flow of the signal from the audio side (A) to the video side (B), and the signal is imported into the first video memory 12 by the video input section 1. The video information is modulated by the video signal modulation unit 10 into a signal that can be transmitted over a telephone line.Then, the modulated video signal has a signal for audio/video switching added to the beginning and is sent from the line interface unit 5. The signal is sent to the other party via the telephone line 4.The audio/video switching signal is detected by the video signal discriminator 7 of the telephone terminal device of the other party, and the audio/video signal switching switch 6 is operated. The signal flow is switched from the audio side (A) to the video side (B), and the video signal demodulation section 11 demodulates the video signal, stores it in the second video memory 13, and displays it on the video display section 2.

After the video transmission ends, the audio signal/video signal changeover switch 6 automatically returns 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.

Problems to be Solved by the Invention However, with the telephone terminal device configured as described above, if you want to send an image of a subject located far away from the telephone terminal device, you must hold the subject in front of the video input section (or vice versa). However, if the subject is difficult to move, the telephone terminal device itself must be moved, which is a troublesome task.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a video input section for a device body equipped with a video modulation section, a video demodulation section, and a display device that displays a video signal as a visible image. The image unit, which has a viewfinder and a viewfinder, can be separated.

Operation According to the above-described configuration, the present invention allows the image unit to be carried separately from the main body of the apparatus, and a subject located at a distance can be captured by the finder and an image sent.

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

FIG. 1 shows an external view of a video telephone, which is an example of a telephone terminal device according to an embodiment of the present invention, and is a perspective view of a video input section separated from the main body of the device. 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, 14 is the main body of the device, which is a CRT (cathode ray tube).
a video display section 2 composed of a liquid crystal display panel, an image sending button 3, a line interface section 5, an audio signal/video signal changeover switch 6, a video signal discrimination section 7, an audio output section 8 such as a speaker, a microphone, etc. An audio input section 9, a video signal modulation section 10, and a video signal demodulation section 11 that demodulates the video signal.
, first and second video memories 12.13.

15 is the video input section 1, the finder 16, and the image sending button 3
This video unit 15 is a video unit equipped with a.
is electrically connected to the device main body 14 by a transmission cable 17. A curl cord is used as the transmission cable. Further, the video unit 15 is connected to a video unit holding member 18 provided on the side of the video display section 2 of the device main body 14.
It is configured so that it can be hung on and held. Further, although details are not shown, the tilt table 19 on which the video display section 2 is mounted is configured to be rotatable and movable back and forth.

Next, the operation will be explained.

First, when transmitting an image of an operator making a telephone call to the other party, the image unit 15 is often attached to the main body 14 of the device. That is, the image unit 15 is hooked onto the image unit holding member 18 on the side surface of the image display section 2. At this time, the framing of the video is done on the video display section 2.
and recognize the part captured by the video input section 1.
This is done by moving the tilt table 19. By operating the video sending button 3, the video captured by the video input section 1 is temporarily stored in the first video memory 12, and then sent to the other party via the video signal modulation section 10.

In addition, if the subject is located away from the main body 14 of the device and the subject cannot be captured well even if the tilt table 19 is moved, the video unit 15 can be removed from the video unit holding member 18 on the side of the video display section 2 and the video image will be displayed. By moving only the unit 15 to the subject position, performing the desired framing while looking through the viewfinder of the video unit, and performing the same operation as described above by operating the image feed button 3a, the video input is performed. The video captured by the section 1 is once taken into the first video memory 12, and is modulated by the video signal modulation section 10 into a signal that can be transmitted over a telephone line. A signal for switching is added and sent from the line interface section 5 to the other party via the telephone line 4.

As a result, there is no need to bring the object you want to send close to the device, or move the entire telephone terminal device to the subject.
And the first. The second video memory 12, 13, video signal modulation section 10, video signal demodulation section 11, etc. are placed on the device main body 14 side, and only the video unit equipped with the video input section 1 and finder is carried, making it easy to operate. is very good.

Furthermore, the video unit is equipped with a finder, making framing work extremely easy.

Note that even if the finder 16 in the above embodiment is a viewfinder that is electrically connected to the video input section 1 and displays the video actually captured by the video input section 1,
It may be any device that is not electrically connected to the video input section.

Effects of the Invention As described above, the present invention includes a video unit equipped with a video input section and a finder, a device main body equipped with a video display section, a line interface section, a video modulation section, and a video demodulation section. By making the unit removable from the main body of the device, it is possible to freely send images of objects located far away, 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 which is a telephone terminal device according to an embodiment of the present invention, FIG. 2 is a block diagram showing its circuit configuration, and FIG. 3 is a television telephone which is an example of a conventional telephone terminal device. FIG. 4, a perspective view of the telephone, is a block diagram showing its circuit configuration. l...Video input section, 2...Video display section, 3...Picture sending button, 4...Telephone line 5...Line Interface section, 6...
・Audio signal/video signal changeover switch, 7...
・Video signal discrimination section, 8...Audio output section, 9...Audio input section, 10...Video signal modulation section, 11...Video signal demodulation 12...First video memory, 13...Second video memory, 14...Device body, 15...Video unit 16... ...Finder 17...Transmission cable, 18...Video unit holding member, 19...
... Name of tilt stand agent Patent attorney Toshio Nakao and one other person Figure 1 Procedural amendment (0 citation 8, 1988 Patent application No. 309003, 1988 2 Name of invention Telephone terminal device 3 M correct) Relationship with the incident involving a person who has filed a patent application Office: 1006 Kadoma, Kadoma City, Osaka Prefecture Name:
(582) Representative of Matsushita Electric Industrial Co., Ltd.
Akio Tanii Agent 4 571 Address 1006-5 Oaza Kadoma, Kadoma-shi, Osaka Target of amendment 6 Contents of amendment (1) Change “Unit 15 to 1” on page 6, line 18 of the specification.
Unit 15 and ” will be corrected. (2) Correct "r3...Image forwarding button," on page 10, line 8 of the statement, to "r3, 3a...Image forwarding button, j." (3) Revise Figure 1 of the drawing as shown in the attached sheet. (4) Correct Figure 2 of the drawing as shown in the attached sheet. (5) Correct Figure 4 of the drawing as shown in the attached sheet.

Claims (1)

[Claims] a video unit equipped with a video input section and a finder;
A line interface unit connected to the telephone line, a video signal modulation unit that modulates the video signal into a signal that can be transmitted over the telephone line, and a video signal demodulation unit that demodulates the modulated video signal sent via the telephone line. and a video display section that displays the video signal from the video signal demodulation section and the video signal from the video unit as a visible image, and the video unit is detachably attached to the device main body. A telephone terminal device configured as follows.