Multi-media communication device

• US 5,392,284 A
• Filed: 03/03/1994
• Issued: 02/21/1995
• Est. Priority Date: 09/20/1990
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Sugiyama, Akira
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Kizou, Hassan
• Application Number:
  US08/205,823
• Time in Patent Office: 355 Days
• Field of Search: 370/84, 370/79, 370/85.7, 370/110.1, 370/112, 370/62, 370/118, 358/85, 379/53, 379/96, 379/93, 348/14, 348/17, 348/552
• US Class Current: 370/465
• CPC Class Codes: H04J 3/1688 the demands of the users being taken into account after redundancy removal, e.g. by predictive coding, by variable sampling reducing bandwidth of signals in general H04B1/66; in PCM-systems H04B14/046; removal of redundancy in telegraph communication H03M7/30
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04M 1/253 Telephone sets using digital voice transmission
• CPC Class Codes: H04N 21/2335 involving reformatting operations of audio signals, e.g. by converting from one coding standard to another details of audio signal transcoding G10L19/173
• CPC Class Codes: H04N 21/2368 Multiplexing of audio and video streams
• CPC Class Codes: H04N 21/2385 Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/485 End-user interface for client configuration
• CPC Class Codes: H04N 21/637 Control signals issued by the client directed to the server or network components
• CPC Class Codes: H04N 7/148 Interfacing a video terminal to a particular transmission medium, e.g. ISDN

Abstract

A multi-media communication terminal device includes a first information communication device for communicating the first information at a plurality of communication rates, a second information communication device for communicating the second information different from the first information at a plurality of communication rates a selection device for selecting the information concerning the communication rate to specify the communication rate of the first information, and a control device for selecting the communication rate of the second information based on the communication rate of the first information specified.

Claims

1. A multi-media communication terminal device comprising:

image information communication means for communicating image information at one of a plurality of image transmission rates to a partner communication terminal device;

audio information communication means for communicating audio information at one of a plurality of audio transmission rates to the partner communication terminal device;

selection means for selecting one of the plurality of image transmission rates; and

control means for selecting from among the plurality of audio transmission rates the optimal audio transmission rate in accordance with the image transmission rate selected by said selection means.

2. A device according to claim 1, wherein said audio information communication means has a plurality of audio encode means.

3. A device according to claim 2, wherein said control means selects one of said plurality of audio encode means to determine the audio transmission rate.

4. A multi-media communication terminal device according to claim 1, wherein said multi-media communication terminal device is connected to the partner communication terminal device via an integrated services digital network.

5. A multi-media communication terminal device according to claim 4, further comprising means for exchanging an ability of said multi-media communication terminal device for enabling a communication with the partner communication terminal device, and for determining the number of communication channels for use in the communication.

6. A multi-media communication device comprising:

image communication means for communicating an image at one of a plurality of image transmission rates to a partner communication device;

selection means for selecting one of the plurality of image transmission rates;

set means for setting one or a plurality of communication channels between said multi-media communication device and the partner communication device, each communication channel accommodating a predetermined image transmission rate;

determining means for determining, when the image transmission rate has been selected by said selection means, whether a superfluous channel has been set by a previous operation of said set means, or whether the number of the previously set communication channels is insufficient for image communication at the selected image transmission rate; and

control means for controlling said set means to release the superfluous channel if it has been determined by said determining means that the superfluous channel has been previously set, and for controlling the set means to set a new communication channel if it has been determined by said determining means that the number of previously set channels is insufficient for image communication at the selected image transmission rate.

7. A device according to claim 6, further comprising audio communication means for communicating audio information at one of a plurality of audio transmission rates, and wherein

said control means determines the audio transmission rate of audio information on the basis of the image transmission rate selected by said selection means.

8. A multi-media communication device comprising:

multi-media communication means for communicating a plurality of media information in a combination thereof to a partner communication device;

selection means for selecting either one of a first mode and a second mode, the first mode entailing setting a first communication channel between said multi-media communication device and the partner communication device and the second mode entailing setting the first communication channel and a second communication channel between said multi-media communication device and the partner communication device; and

control means for automatically setting, if the first communication channel has been previously set between said multi-media communication device and the partner communication device, the second communication channel in addition to the first communication channel, if the second mode is selected by said selection means.

9. A device according to claim 8, further comprising means for determining the number of the communication channels capable of performing a communication of the media information, and for exchanging the number determined with the partner communication device.

10. A device according to claim 8, wherein said control means disconnects the second communication channel if the first mode is selected by said selection means during the performing of communication by said multi-media communication means in the second mode.

11. A multi-media communication device comprising:

multi-media communication means for communicating a plurality of media information in a combination thereof to a partner communication device;

selection means for selecting either one of a first mode and a second mode, the first mode entailing setting a first communication channel between said multi-media communication device and the partner communication device and the second mode entailing setting the first communication channel and a second communication channel between said multi-media communication device and the partner communication device; and

control means for setting, if the second mode is selected by said selection means, the first and second communication channels between said multi-media communication means and the partner communication device,

wherein said control means disconnects the second communication channel if the first mode is selected by said selection means during the performing of communication by said multi-media communication means in the second mode.

12. A multi-media communication device comprising:

multi-media communication means for communicating a plurality of media information in a combination thereof to a partner communication device;

selection means for selecting either one of a first mode and a second mode, the first mode entailing setting a first communication channel between said multi-media communication device and the partner communication device and the second mode entailing setting the first communication channel and a second communication channel between said multi-media communication device and the partner communication device; and

control means for setting, if the first mode is selected by said selection means, the first communication channel between said multi-media communication device and the partner communication device,

wherein said control means sets the second communication channel in addition to the first communication channel if the second mode is selected by said selection means during the performing of communication by said multi-media communication means in the first mode.

13. A method on a multi-media communication terminal device comprising:

communicating image information at one of a plurality of image transmission rates to a partner communication terminal device;

communicating audio information at one of a plurality of audio transmission rates to the partner communication terminal device;

selecting one of the plurality of image transmission rates; and

selecting from among the plurality of audio transmission rates the optimal audio transmission rate in accordance with the image transmission rate selected by said selection means,

14. A method on a multi-media communication device comprising the steps of:

communicating an image at one of a plurality of transmission rates to a partner communication device;

selecting one of the plurality of transmission rates;

setting one or a plurality of communication channels between the multi-media communication device and the partner communication device, each communication channel accommodating a predetermined transmission rate;

determining, when the transmission rate has been selected by said selecting step, whether a superfluous channel has been set by a previous operation of said setting step, or whether the number of the previously set communication channels is insufficient for image communication at the selected transmission rate; and

controlling said setting step to release the superfluous channel if it has been determined by said determining step that the superfluous channel has been previously set, and for controlling the setting step to set a new communication channel if it has been determined by said determining step that the number of previously set channels is insufficient for image communication at the selected transmission rate.

15. A multi-media communication method on a multi-media communication device for communicating a plurality of media information in a combination thereof to a partner communication device, said method comprising the steps of:

selecting either one of a first mode and a second mode, the first mode entailing setting a first communication channel between the multi-media communication device and the partner communication device and the second mode entailing setting the first communication channel and a second communication channel between the multi-media communication device and the partner communication device; and

automatically setting, if the first communication channel has been previously set between the multi-media communication device and the partner communication device, the second communication channel in addition to the first communication channel, if the second mode is selected by said selecting step.

16. A multi-media communication method on a multi-media communication device for communicating a plurality of media information in a combination thereof to a partner communication device, said method comprising the steps of:

selecting either one of a first mode and a second mode, the first mode entailing setting a first communication channel between the multi-media communication device and the partner communication device and the second mode entailing setting the first communication channel and a second communication channel between the multi-media communication device-and the partner communication device; and

setting, if the second mode is selected by said selecting step, the first and second communication channels between the multi-media communication device and the partner communication device,

wherein said setting step disconnects the second communication channel if the first mode is selected by said selecting step during the performing of communication by the communication device in the second mode.

17. A multi-media communication method on a multi-media communication device for communicating a plurality of media information in a combination thereof to a partner communication device, said method comprising the steps of:

selecting either one of a first mode and a second mode, the first mode entailing setting a first communication channel between the multi-media communication device and the partner communication device and the second mode entailing setting the first communication channel and a second communication channel between the multi-media communication device and the partner communication device; and

setting, if the first mode is selected by said selecting step, the first communication channel between the multi-media communication device and the partner communication device,

wherein said setting step sets the second communication channel in addition to the first communication channel if the second mode is selected by said selecting step during the performing of communication by the multi-media communication device in the first mode.