JPH03143066A - Television telephone connection system - Google Patents

Abstract

PURPOSE:To grasp a caller quickly and surely without hook-off and to properly discriminate whether or not a call is to be replied by storing picture information picked up by a sender side camera into a frame memory and sending the picture information succeedingly to control information to a control channel at dialing. CONSTITUTION:Picture information picked up by a sender camera 41 at dialing is sent in succession to control information on a control channel and when a receiver side television telephone set receives a call and its bell rings, a picture in response to the picture information from the sender side is displayed on a picture display section 56. When the receiver side television telephone set receives a call and its bell rings, the picture from the sender side is displayed on the picture display section in this way to grasp the caller quickly and surely without hook-off of the television telephone set and whether or not an incoming call is to be replied is discriminated properly.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a control channel and an information channel,
This invention relates to a connection method for videophones accommodated in digital lines.

[Prior Art] In conventional terminals accommodated in digital public telephone lines, the telephone number of the calling party in the digital telephone system is known as calling party information that the receiver can obtain before the receiver goes off-hook. ing.

This telephone number of the calling party is received from the network when a call is received, and is displayed on the receiving party, but is it a TV telegram that is accommodated in a digital public line? Even at 11 inches, it moves to the right.

[Problems to be Solved by the Invention] In the conventional system described above, the only information the receiver can obtain before going off-hook is the caller's telephone number, and it is difficult to remember to whom this telephone number belongs. Or,
The problem is that it takes time and effort to investigate.

Also, as at work, home, etc., the same - IE talk number 1;
There is a problem in that when 8 million people buy a TV set, it is very difficult to know who is the caller based only on their phone number. When a public videophone is used, there is a problem in that it is even more difficult to determine the caller from the telephone number alone.

In other words, in the conventional method described above, the caller can be quickly and reliably)l! Therefore, if multiple people are using the same videophone at work, home, etc., There is a problem in that it is not possible to determine who should receive the information.

The present invention provides a videophone connection method that allows the caller to be quickly and reliably identified without taking the videophone off-hook, and therefore allows it to appropriately judge whether or not to answer an incoming call. The purpose is to

[Means for Solving the Problems] The present invention transmits the image information photographed by the transmitting camera on the control channel following the control information when making a call, and when the receiving videophone receives a call and the bell rings. Second, an image corresponding to image information from the sending side is displayed on the image display section.

[Function] The present invention displays an image from the sending side on the image display section when the receiving side videophone receives a call and the bell rings, so that the caller can be quickly and reliably detected without the videophone going off-hook. Therefore, it is possible to appropriately judge whether or not to answer the incoming call.

[Embodiment] FIG. 1 is an explanatory diagram of a protocol showing an embodiment of the present invention.

In this embodiment, the ISDN circuit-switched call control channel (D channel) and information channel (B channel) are used as the digital line protocol. Furthermore, a still image is sent to the receiving side when the transmitting side video phone goes off-hook.

The video telephone 3 on the calling side has an input/output section 1 and a protocol compatible section 2, and the video telephone 4 on the receiving side also has a human output section 1 and a protocol compatible section i'12.

Then, in response to a call originating from the video phone 3 on the calling side, a 5ETUP message (request for call setup) 11 is sent to the network. In addition to the conventional control f, - information, this 5ETUP message 11 includes still image information obtained by the camera of the video phone 3 on the 9-<,'s side. The above 5ETUP message 11 is received by the receiving video phone 4, and the receiving video phone 4 receives the CALL.
PROC messages (notification that call setup is in progress)
12 will be returned. When the calling video phone 3 receives this CALL PROC message 12, the receiving video phone 4 issues an ALERT message (notification that the called party is being called) 13, and at the same time, the receiving TV 4 performs a calling operation ( operation such as ringing) is performed, and the receiving TV I
In the C phone 4, the 011 picture from the transmitting TV 3 is displayed and output.

The recipient can decide whether or not to answer the video call (go off-hook) or who will answer while viewing the still image.

After answering the video call (after going off-hook), C0NN
The message 14 and C0N ACK (response to the CONN message) 15 are exchanged to establish an information channel between the sender and the receiver, and from then on, television images and audio are transmitted and received using the information channel. The communication operation after the receiving side videophone 3 goes off-hook is the same as the conventional one.

FIG. 2 is a diagram showing an example of the configuration of the 5ETUP message 11 shown in FIG. m1.

This 5ETUP message 11 is composed of a common part 20 and an individual part 30. The common part 20 has a conventional protocol identifier 21, a call number 22, etc. The 0 individual part 30 specifies a bearer service. 31, Channel specification 3
2. A call destination number 33, a layer 4 or higher function 34 between users, and still image information 35 are added to these. In other words, the hair service designation 31, channel designation 32, call advance number 33, and layer 4 or higher a function 34 between users have traditionally been implemented, and the individual part 30 of the 5ETUP message The feature of the above embodiment is that still image information 35 is added to the image data.

FIG. 3 is a block diagram showing a specific configuration example of a videophone in the 1y1 videophone connection system.

The videophones 3 and 4 each have an input/output unit 1 and a protocol compatible unit 2 for RF transmission, and the input/output unit 1 detects off-hook, accepts a pushbutton, and notifies advance debt by sound.
This is the part that inputs and outputs images and sounds. The protocol support unit 2 is an interface with the DSU, B channel
This is the part that performs the allocation/assembly of the D channel, the formation of messages on the B channel, the D channel, etc.

The input/output unit l includes a camera 41, a microphone 42 . transmitting section 43,
A storage section 44, an encoding section 45, a reply section for pressing the button 46, a receiving section 51, a speaker 52, and a calling section 53.
, sound generating section 54. Decoding section 55, both image display section 56
The hook switch 61, the one-character display section 62, and the human output control section 63 are located on the right.

The protocol compatible section 2 includes a control information control section 71, an image information control section 72, a control information/image information distribution section 74, and a D
The SU interface section 75 is opened.

Next, as shown in Figure 3! The operation of the /h example will be explained.

First, when the caller takes off-hook the calling phone 3,
The off-hook switch 61 operates, and the input/output control section 6
3 detects the image, transmits it to the transmitting section 43, and according to the instruction from the transmitting section 43, the camera 41 shoots the correct image, and the camera 41
The information is stored in the storage unit 44 as still image information.

Then, the caller presses the button 46,
The result of this pressing is displayed on the character display section 62. When the pressing of the button 46 is completed, the static 1+j stored in the storage unit 44 under the control of the input/output control unit 63
One piece of i information is extracted and sent to the encoder 4 via the transmitter 43.
5. The encoded still IL image information is sent to the control information control section 1 section 71 of the protocol compatible section 2 via the human output control section 63.

In the control information control unit 7L, the encoded l'+>original image information and the conventional 5ETUP message are combined,
A "1z) 5ETUP message with an original image added" shown in the second factor is formed. Then, in the control information/image information distribution section 74, the D channel information (control tJl+,';
(information in which still image information is added to the broadcast information) and B channel information are combined and sent to the receiving side videophone a4 via the DSU interface section 75. Note that the B channel information is audio information in image information after off-hook, but the information is empty in the above preferential treatment.

On the other hand, on the receiving side TV'llj: In the packing machine 4, the DSU
Calling side video phone via interface 75) a3
Upon receiving the information, a control information/image information sorting section 74 sorts D channel information (control information) and B channel information (image information). The D channel information is interpreted by the control information controller 71, and the B channel information is interpreted by the image information controller 72.

After the transmitted 5ETUP message 11 is interpreted as a protocol by the control information control section 71, the input/output control section 63 operates the calling section 53, and the sound emitting JL section 54 sounds a "call". Along with 5E
The still image information in the TUP message 11 is sent to the decoding section 55, where it is decoded and then the still image is displayed on the single image display section 56. The input/output control section 63 instructs the same attendant to display the calling a telephone number on the character display section 62.

Receiving side video phone 4 goes off-hook, C0NN mail,
When the message 14 is returned from the receiving side and the control information control unit 71 on the sending side detects this off, the control information/image information distribution unit 74 operates, and from now on, the B channel information (
(image information and audio information) are sent and received. B channel information is input by a camera 41 and a microphone 42 on both the transmitting side and the receiving side, and is input by a transmitting section 43, an encoding section 45, an image information control section 72, a control information/image information distribution section 74, and a DSUS Fintaface. Send via route 5.

In addition, B channel information is received through the path of the DSUS Fintaface 5, control information◆image information distribution section 74, and image information control section 72, and the audio is outputted from the speaker 52 after passing through the reception section 51, and the image information is decoded. The image data is decoded by the encoding unit 55 and output by the image display unit 56.

According to the embodiment L, before the receiver sends the still image information taken by the camera of the calling phone g&3,
The recipient can (!) thereby obtain richer information to identify the sender.

Therefore, the receiver can make a more appropriate decision as to whether or not to go off-hook in response to an incoming call.
Prank call.

Effective against harassing phone calls, etc. Furthermore, even if a call is received from a videophone that is shared by multiple people at home, work, etc., the caller can be identified, making it possible to more appropriately determine who should answer.

- (In the second embodiment, the transmitting video phone transmits a still image when an off-hook occurs, but instead of the above-mentioned off-hook, an event corresponding to an off-hook such as dialing or making a call is sent. You may choose to adopt it.

[Effects of the Invention] According to the present invention, in a video telephone system accommodated in a digital line, it is possible to quickly and reliably identify the caller without going off-hook, and therefore it is possible to quickly and reliably identify the caller without going off-hook. This has the effect that it is possible to appropriately judge whether or not to proceed.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a protocol in one embodiment of the present invention. FIG. 2 is a diagram showing an example of the structure of the 5ETUP message in the above embodiment. FIG. 3 is a block diagram showing an example of the configuration of a TV'IT 2-talk machine in which the present invention is implemented. l...Input/output section, 2...Protocol compatible section. 3... Calling side videophone, 4... Receiving side videophone 61... Hook switch, 41... Camera, 44... Memory, 56... Image Display section. 46...butsubutton.

Claims (1)

[Scope of Claims] A videophone system that has a control channel and an information channel and is accommodated in a digital line, in which, in the transmitting videophone, when off-hook or an event corresponding to this off-hook occurs, the transmitting side camera The image information taken by the receiver is stored in the frame memory, and when making a call, the above image information is sent out following the control information on the control channel, and when the receiving videophone receives a call and the bell rings, the above A videophone connection system characterized by displaying an image on an image display unit according to image information from the transmitting side.