JPS62179288A - Picture and sound communication equipment - Google Patents

Abstract

PURPOSE:To completely understand the situation of a remote station except the time of communication by providing a memory for fetching picture encoding data to a television telephone set, a selector for controlling an input and output thereof and a control circuit therefor, transmitting the message of a video and displaying on a display. CONSTITUTION:When there is a calling from the remote station and a receiver of a local station is not raised, a transmission signal selector 7 selects the picture encoding data 10 read from the encoding data memory 8 by the control circuit 9 and transmits from a transmission device to display the message of the contents of the encoding data memory of the local station on the display of the remote station. Herein, when the receiver of the local station is raised, the transmission signal selector 7 immediately selects picture encoding data 6 of a route of a television camera 1 to enter an ordinary communication state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an image/sound communication device typified by a videophone.

[Conventional technology]

Figure 2 is an explanatory diagram of a videophone, (1a) (1
b) is a TV camera, (13a) and (13b) are displays.

(14a) (14b) is a voice receiver, (15a)
(15b) is a video telephone encoding/decoding device (codec), (1G is a digital voice line).

FIG. 3 is a block diagram of a transmitting unit of a conventionally proposed image communication device for videophone. 4) is a digital video signal, (5) is an image encoding circuit, (61 is image encoded data, and αυ is a transmission device.

02 is transmission data.

Next, the operation will be explained. In fig.

A case where a video call is made from station B to station A will be explained.

When a videophone call is made from station B to station A, station A calls the person talking at station A with a ring tone. At this point, video and audio data are not transmitted in both directions, and no video is displayed on either display (13a) (13b). Also, if the speaker at station A is absent, then station B
The station determines that there is no response from station A on the display (13b) and receiver (14b) and stops calling.

When the speaker at station A is called and picks up the receiver (14a),
Two-way audio and video lines are connected, and station A's camera (
1a) to the B station display (13b).

Either the B station camera (1b) or the kA station display (13a)
), and audio is also transmitted to both handsets (1
4a) (14b). The video and audio call continues as long as both handsets (14al (14b)) are up, and one communication line is disconnected when either the A or B handset is taken down.

The images on the display (1'3a) (15b) disappeared, and the audio on the receiver (14a) (14b) +7) also went off.

3, the operation of the transmitting section of a conventionally proposed image communication device for videophone will be explained. The television camera (11) takes a picture of the speaker holding the receiver, and the output analog video signal (2) is converted into a digital signal by the A/D converter (3) and sent to an image encoding circuit (5). After being encoded by the transmission device maυ, it is transmitted to the other station as transmission data α2.

[Problem that the invention seeks to solve]

Conventional videophones were configured as described above, so
When making a videophone call, the image does not appear on the display until the other party picks up the phone.

In addition, the arrangement for gAl+ for making video calls is insufficient in terms of operability, such as having to wait a long time for a call when the person on the other end of the line is absent, and the absence being known.

The problem was that the display was not being used effectively.

This invention was made in order to solve the above-mentioned problems.When a videophone call is received from another station, until the own station picks up the receiver.

To provide a video telephone that can effectively use a display even when a call is not started, such as having a function of transmitting messages from the own station and displaying them on the display of the other station.

[Means for solving problems]

The video telephone according to the present invention is equipped with a memory that takes in one image coded data, a selector that controls input/output of the memory, and a control circuit thereof.

[Effect]

The video telephone according to the present invention stores a message sent by the TV camera of the own station into an encoded data memory in advance, and displays the message on the display of the other station when there is a call 1 from the other station.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) is a television camera, (21 is an analog video signal, (3) is an A/D converter, (4) is a digital video signal, (5) is an image encoding circuit, and (6) is an image code. coded data, ()1 is a transmission signal selector, (8) is a coded data memory, (9) is a control circuit that controls the selector (7) and coded data memory +81, and Ql is a coded data memo from January 81. The read image encoded data,
Qll is a transmission device, (12 is transmission data.

Next, the operation will be explained.

In Figure 1, an analog video signal (21) output from a television camera (11) is converted into a digital video signal (4) by an A/D converter (3) and then processed by an image encoding circuit (5). It is encoded into image encoded data (6).

During a normal call, the transmission signal selector +71 selects the encoded image data (61) of the route of the TV camera (route), and the contents of the encoded data memory (8) are not updated. Through the device αυ.

It is transmitted to the display of the game player as transmission data αa.

On the other hand, if there is a call from the other station and the handset of the own station is not picked up, the image encoded data αQ read out by the control circuit (9) and the transmission signal selector (71 is the encoded data memory 18) By selecting and transmitting the message from the transmission device, it is possible to display the message, which is the content of the encoded data memory of the own station, on the display of the opposing station. When the handset of the local station is picked up, the transmission signal selector (71) immediately selects the encoded image data (6) of the route of the television camera (1) and enters into a normal telephone conversation state.

In addition, messages transmitted from your own station can be sent to the encoded data memo I.
When writing to I +81, use your station's TV camera +1
1 displays the message and instructs the control circuit (9) to capture the message.9 Image encoded data (6)
1 is written into the encoded data memory (8).

Although still images are easy to handle as messages stored in the encoded data memo (January 8), it is also possible to periodically read short-term moving images.

First, it is effective to improve operability by storing a plurality of messages in the encoded data memory (81) and switching between them with a switch depending on the situation.

In the above embodiment, is the incoming call all of the local station raised?

The power that indicates that the message continues to be output until the receiver of the other station is hung up ξ If the speaker at the own station is absent, etc.
It is sufficient to send a message for a certain period of time. Therefore,
The message output time is determined, and the message output is finished within a certain period of time using a timer.

It is also effective to provide a mode for disconnecting the line so that it can be switched.

Furthermore, with a digital telephone, it is possible to know the telephone number of the other party when making a call, and it is also possible to use different messages to output depending on the telephone number of the other party. This makes it possible to notify the contact information of a mackerel you are away from only to a specific person whose phone number you have registered in advance.

Further, as another embodiment, the block diagram of FIG. 4 shows an example in which the encoded data memory f81 is provided with a function of capturing received messages.

In Figure 4, (1) is a TV camera, (3) is an A/
D converter, (5) is an image encoding circuit, (7) is a transmission signal selector, (lη is a memory write signal selector, (1
11 is the transmission equipment, brocade is the display signal selector, Ql is the image decoding circuit, (to) is the D/A converter, αJ is the display, (91 is the control circuit, c!υ is the keyword identification circuit or the game phone number It is an identification circuit.

The operation will be explained. During a normal call, the output of the transmission signal selector (1) is displayed as the output of the image encoding circuit (5).2 The signal selector (0) selects the signal from the transmission device <111, and the encoded data memo January 81 is prohibited from writing. It is in a state of

When a game call is made, the transmit signal selector (
7) selects the message of encoded data memo January 81, and the transmission device sends the message to the game player.

When writing a message from the own station, the memory loading signal selector aη is output from the image encoding circuit (5).

The display signal selector αg selects the output side of the encoded data memory (8), and the encoded data memo 1/81 is sounded.

Furthermore, in FIG. 4, a function is added to write messages from the game into the encoded data memory (8). If you want to receive messages from the game.

Memo+7 'iL input signal selector αη is transmission device a
The received signal output that is most likely to be Il is selected and written to the encoded data memory 1. Also, if you want to view the message from the game on your own display Q3 afterwards.

Switch the display signal selector Nishiki to the encoded data memory +31 output side.

With the above configuration, you can receive messages as an answering machine and view them when you return home. Needless to say, it is effective to use a voice recording function at this time.

Furthermore, in the case of a digital phone, it is also possible to display messages received at home on the display of the TV 1 while you are away. The number must be input into the game phone number identification circuit C1l+ of the videophone at home.

Another effective method is to transmit a keyword signal from outside the home, thereby activating the keyword identification circuit CD to display messages received at home.

In the above example, when there is a call from the game player, when you pick up the handset of your own station, the game screen always switches to the TV camera signal for the call, but when you pick up the phone and start a voice conversation, too.

In order to deal with the case where the user does not want to see the signal from the television camera and wants to continue sending messages, it is effective to set a mode that allows messages to be sent even when the receiver is picked up.

〔Effect of the invention〕

As described above, according to the present invention, a video telephone is equipped with a memory for importing encoded image data, a selector for controlling its input/output, and a control circuit thereof, and is capable of transmitting video messages and displaying them on a display. This configuration has the effect that the situation of the other party can be well understood even during a single call, and the display can be used effectively.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an image transmission section of a videophone according to an embodiment of the present invention, FIG. 2 is a schematic diagram of the videophone, and FIG.
The figure is a block diagram of an image transmitting section of a conventional videophone, and FIG. 4 is a block diagram of an image transmitting and receiving section of a videophone according to a modification of the present invention. (11 TV cameras, (2) is an analog video signal, (
31 is an A/D converter, (4) is a digital video signal, (
5) is an image encoding circuit, (6) is image encoding data, C
7) is a transmission signal selector, (81-digit encoded data memo I
J, (91 is the control circuit, α・ is the encoded data memory C8
), 011 is the transmission device, C4 is the transmission data, (131 display,
(14) is a voice receiver. α is a TV/speech encoding/decoding device (codec). Oe is a digital telephone line, +1? ) is memo 17!
Loading signal selector, am is display signal selector, C1
is an image decoding circuit, 01 is a D/A converter, and Gll+ is a keyword identification circuit or a game phone number identification circuit. Note that in FIG. 2, low symbols indicate the same or common parts.

Claims (5)

[Claims] (1) A television camera that receives an image of a speaker or an image message and obtains an analog video signal, and an A/D converter that converts the analog video signal into a digital video signal;
an image encoding circuit that encodes the digital video signal to obtain encoded image data; an encoded data memory that arbitrarily stores one or more video frames using the encoded image data as a message; and an encoded data memory that arbitrarily stores one or more video frames as messages; a transmission data selector that switches the encoded image data stored as the message according to whether or not a call has started; a control circuit that controls the encoded data memory and the transmission data selector; and a control circuit that controls the output of the transmission data selector as transmission data. 1. An image/audio communication device, characterized in that an image transmitter includes a transmission device for transmitting images as an image. (2) Image/audio communication according to claim 1, characterized in that the message output is terminated in a certain period of time by a timer that determines the message output time, and the line is switched to a disconnection mode. Device. (3) The image according to claim 1 or 2, characterized in that the image is configured to have a function of selectively using a plurality of messages to be output based on reception information such as an identification number or a keyword of a partner station.・Voice communication device. (4) The image processing system according to any one of claims 1 to 1, further comprising means having a function of storing received messages in the encoded data memory.
Voice communication equipment. (5) Stored in any one of claims 1 to 4, which is characterized by having a configuration for switching a mode in which a message is transmitted regarding the video even after the start of the call, and the image of the speaker is not transmitted. image/audio communication equipment.