Multimedia communicating apparatus

• US 5,367,522 A
• Filed: 02/19/1992
• Issued: 11/22/1994
• Est. Priority Date: 02/21/1991
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Otani, Masatoshi
• Primary Examiner(s): HSU, ALPUS
• Application Number:
  US07/836,913
• Time in Patent Office: 1,007 Days
• Field of Search: 370/62, 370/77, 370/79, 370/84, 370/110.1, 370/112, 370/118, 358/86, 358/142, 358/143, 358/85, 358/141, 379/53, 379/54, 379/93, 379/94, 379/96, 379/100, 381/2, 455/5.1, 375/7, 375/122, 375/36, 348/1, 348/6, 348/14, 348/384, 348/461, 348/462, 348/467, 348/469, 348/473
• US Class Current: 370/468
• CPC Class Codes: H04J 3/1682 Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
• CPC Class Codes: H04Q 11/0457 Connection protocols
• CPC Class Codes: H04Q 11/0471 Terminal access circuits
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/13096 Digital apparatus individually associated with a subscriber line, digital line circuits
• CPC Class Codes: H04Q 2213/13174 Data transmission, file transfer
• CPC Class Codes: H04Q 2213/13179 Fax, still picture
• CPC Class Codes: H04Q 2213/13204 Protocols
• CPC Class Codes: H04Q 2213/13209 ISDN
• CPC Class Codes: H04Q 2213/13248 Multimedia
• CPC Class Codes: H04Q 2213/13292 Time division multiplexing, TDM
• CPC Class Codes: H04Q 2213/13332 Broadband, CATV, dynamic bandwidth allocation
• CPC Class Codes: H04Q 2213/13337 Picturephone, videotelephony
• CPC Class Codes: H04Q 2213/13392 Channels assigned according to rules

Abstract

Multimedia communication apparatus includes a communication unit that transmits and receives plural types of media information in multiplexed form. When the communication unit is to transmit a first type of media information, a large-capacity transfer speed is allocated to transmission of the first type of media information by first transmission speed selection, but when the communication unit is to receive the first type of media information, a small-capacity transfer speed is allocated to the transmission of the first type of media information, so as to receive the first type of media information and transmit necessary control data. The data transmission speed is flexibly changed dependent on the multiplexed condition of other than data type media information to enable smoother multimedia communication.

Claims

1. A multimedia communicating apparatus comprising:

communication means for transmitting and receiving plural types of media information in a multiplexed form, said plural types of media information including voice, data and video information; and

control means for allocating a large-capacity transfer speed to transmission of data information when said communication means is to transmit the data information for which two-way communication is not needed,

said control means being operative to allocate a small-capacity transfer speed to transmission of said data information, so as to transmit control data necessary for receiving said data information, when said communication means is to receive said data information, and allocate an as large as possible capacity transfer speed to the transmission of the voice or video information for which two-way communication is needed.

2. A multimedia communicating apparatus according to claim 1, wherein, when said data information is G4 facsimile data, said control means allocates the large-capacity transfer speed to transmission of said data information.

3. A multimedia communicating apparatus according to claim 1, wherein said multimedia communicating apparatus is connected to an integrated Service Digital Network (ISDN).

4. A multimedia communicating apparatus comprising:

communication means for performing communication by transmitting and receiving plural types of media information in multiplexed form including voice, data and video information; and

control means for allocating a predetermined transfer speed to each of said plural types of media information and transmitting said plural types of media information using said communication means during the data information communication in one communication,

said control means being operative for detecting variations in quantity of information included in said media information transmitted, and for automatically changing said transfer speed which was set before data communication, during the data communication in the one communication, depending on the variations in quantity of information detected,

wherein said variations in quantity of information included in the data information are detected in said control means, and the transfer speed of data is automatically changed depending on said variations detected in said control means.

5. A multimedia communicating apparatus comprising:

communication means for communicating plural types of media information with a partner'"'"'s communicating apparatus using a plurality of channels;

judgment means for setting a first channel prior to a communication of the multimedia information, exchanging ability information with said partner'"'"'s communicating apparatus by the set first channel, and judging whether or not said partner'"'"'s communicating apparatus has an ability of setting an additional channel;

setting means for setting an additional channel when said judgment means judges that said partner'"'"'s communicating apparatus has an ability of setting an additional channel; and

selection means for selecting an automatic setting mode for automatically setting an additional channel and a manual setting mode for setting an additional channel at the operator'"'"'s discretion, at the time of setting an additional channel by said setting means.

6. A multimedia communicating apparatus according to claim 5, wherein said selection means can select said automatic setting mode or said manual setting mode for each said partner'"'"'s communicating apparatus.

7. A multimedia communicating apparatus according to claim 5, further comprising control means for, when an additional channel cannot be set by said setting means for some reason, judging the reason and determining whether or not setting of an additional channel should be retried, and setting retry means for retrying to set an additional channel after a lapse of a predetermined period of time depending on the result judged by said control means.

8. A multimedia communicating apparatus according to claim 5, further comprising control means for, when an additional channel cannot be set by said setting means for some cause, judging whether or not said cause occurs in said partner'"'"'s communicating apparatus, wherein said multimedia communicating apparatus receives a setting of an additional channel from said partner'"'"'s communicating apparatus after said cause has been removed.

9. A multimedia communicating apparatus according to claim 5, wherein said communication means communicates voice, data and video information with said partner'"'"'s communicating apparatus using said plurality of channels in a multiplexed form.

10. A multimedia communicating apparatus comprising:

communication means for communicating plural types of media information with a partner'"'"'s communicating apparatus using a plurality of channels;

judgment means for setting a first channel prior to a communication of the multimedia information, exchanging ability information with said partner'"'"'s communicating apparatus by the set first channel, and judging whether or not said partner'"'"'s communicating apparatus has an ability of setting an additional channel;

setting means for setting an additional channel when said judgment means judges that said partner'"'"'s communicating apparatus has an ability of setting an additional channel;

control means for, when an additional channel cannot be set by said setting means for some reason, judging the reason and determining whether or not setting of an additional channel should be retried; and

setting retry means for retrying to set an additional channel after a lapse of a predetermined period of time depending on the result judged by said control means.

11. A multimedia communicating apparatus comprising:

communication means for communicating plural types of media information with a partner'"'"'s communication apparatus using a plurality of channels;

judgment means for setting a first channel prior to a communication of the multimedia information, exchanging ability information with said partner'"'"'s communicating apparatus by the set first channel, and judging whether or not said partner'"'"'s communicating apparatus has an ability of setting an additional channel;

setting means for setting an additional channel when said judgment means judges that said partner'"'"'s communicating apparatus has an ability of setting an additional channel;

control means for, when an additional channel cannot be set by said setting means for some cause, judging whether or not said cause occurs in said partner'"'"'s communicating apparatus; and

setting retry mean for receiving a setting of an additional channel from said partner'"'"'s communicating apparatus and retrying to set the additional channel after said cause has been removed.