EP0313313A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Communication system and communication method
Assignee: Canon Inc
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Filing: 1988-10-18
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Granted: —
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Expires: 2008-10-18
Abstract
Abstract There is disclosed a communication system, and an apparatus therefor, for use in combination with an integrated service digital network. The proposed system, and the apparatus, can achieve a change of service from an equipment to another, for example from a telephone unit to a facsimile unit, both connected to a same telephone line, without disconnecting a call made through the telephone line. For this purpose, the proposed system or apparatus has a discriminating unit for identifying a request for communication released from another unit connected to the same telephone, and a communication control unit for automatically communicating with a destination unit with which said another unit has been communicating through said telephone line.
Inventors
- 👤 Naoyuki Okata
- 👤 Kazuhiko Yoshioka
- 👤 Kazutaka Matsueda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 10:46
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/327; H04N1/32704; H04N1/32706; H04N1/32708; H04N1/32715; H04N1/32726; H04N1/32728; H04N1/32747; H04N1/3275; H04N1/32754; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; Y; Y10; Y10S; Y10S379/00; Y10S379/902; Y10S379/908
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
76 words
A communication apparatus adapted for use in one of plural terminals to be connected to a subscriber line belonging to a data communication network, comprising: discrimination means for discriminating whether communication is requested from another communication apparatus connected to said subscriber line; and communication control means for automatically communicating with an apparatus of a subscriber line with which said another communication apparatus has been communicating, upon discrimination of a request for communication by said discrimination means.
Claim 2
Dependent Claim
76 words
A communication apparatus adapted for use in one of plural terminals to be connected to a subscriber line belonging to a data communication network, comprising: discrimination means for discriminating whether communication is requested from another communication apparatus connected to said subscriber line; and communication control means for automatically communicating with an apparatus of a subscriber line with which said another communication apparatus has been communicating, upon discrimination of a request for communication by said discrimination means.
Claim 3
Dependent Claim
18 words
A communication apparatus according to claim 1, wherein said data communication network is an integrated service digital network.
Claim 4
Dependent Claim
28 words
A communication apparatus according to claim 1, wherein said discrimination means is adapted to discriminate whether a request for communication has been sent from said data communication network.
Claim 5
Dependent Claim
37 words
A communication apparatus according to claim 1, wherein said communication control means is adapted to execute communication with data of a kind different from that of the data employed in the communication of said another communication apparatus.
Claim 6
Dependent Claim
55 words
A communication apparatus according to claim 1, further comprising memory means for storing data to be transmitted when communication is requested from said another communication apparatus, wherein said communication control means is adapted to automatically transmit the data stored in said memory means upon discrimination of a request for communication from said another communication apparatus.
Claim 7
Dependent Claim
56 words
A communication apparatus according to claim 1, wherein said another communication apparatus is a telephone unit, and said communication control means is adapted to automatically transmit data to a data communication apparatus on a subscriber line to which a partner telephone unit is connected, upon discrimination of a request for communication from the first-mentioned telephone unit.
Claim 8
Dependent Claim
102 words
A communication system comprising: plural communication apparatus of different attributions connected to each subscriber line of an integrated service digital network; means for informing the change of attribution from one of said plural communication apparatus to the integrated service digital network; means for calling, from said network, in response to the change of attribution, a communication apparatus of coinciding attribution among said plural communication apparatus; and means for causing the communication apparatus called by said network to automatically transmit data to a communication apparatus on a partner subscriber line to which the communication has been made prior to said change of attribution.
Claim 9
Dependent Claim
102 words
A communication system comprising: plural communication apparatus of different attributions connected to each subscriber line of an integrated service digital network; means for informing the change of attribution from one of said plural communication apparatus to the integrated service digital network; means for calling, from said network, in response to the change of attribution, a communication apparatus of coinciding attribution among said plural communication apparatus; and means for causing the communication apparatus called by said network to automatically transmit data to a communication apparatus on a partner subscriber line to which the communication has been made prior to said change of attribution.
Claim 10
Dependent Claim
31 words
A communication system according to claim 7, wherein said communication apparatus called by said network comprises memory means for storing, in advance, data to be transmitted in response to said call.
Claim 11
Dependent Claim
68 words
A communication system according to claim 7, wherein said informing means is adapted to inform a change of attribution from voice data to image data, said calling means is adapted to call a facsimile apparatus in response to said information, and said transmitting means is adapted to automatically transmit the image data to a facsimile apparatus on a partner subscriber line with which voice communication has been made.
Claim 12
Dependent Claim
72 words
A communication system according to claim 7, wherein said informing means is adapted to inform a change of attribution from image data to audio data, said calling means is adapted to call an apparatus capable of audio communication in response to said information, and said transmitting means is adapted to automatically transmit audio data to a telephone unit on a partner subscriber line with which the image data communication has been made.
Claim 13
Dependent Claim
108 words
A communication apparatus adapted for use in one of plural terminals connected to a subscriber line belonging to a data communication network, comprising: communication means for communicating with a partner communication apparatus; changing means for changing the communication service, after the completion of communication by said communication means, to another communication apparatus connected to said subscriber line; detection means for detecting that the communication service is returned, after the change of service by said changing means; discrimination means for discriminating whether a request is present for disconnecting the line; and disconnection means for disconnecting the line in response to the request for disconnection identified by said discrimination means.
Claim 14
Dependent Claim
108 words
A communication apparatus adapted for use in one of plural terminals connected to a subscriber line belonging to a data communication network, comprising: communication means for communicating with a partner communication apparatus; changing means for changing the communication service, after the completion of communication by said communication means, to another communication apparatus connected to said subscriber line; detection means for detecting that the communication service is returned, after the change of service by said changing means; discrimination means for discriminating whether a request is present for disconnecting the line; and disconnection means for disconnecting the line in response to the request for disconnection identified by said discrimination means.
Claim 15
Dependent Claim
18 words
A communication apparatus according to claim 11, wherein said data communication network is an integrated service digital network.
Claim 16
Dependent Claim
27 words
A communication apparatus according to claim 11, wherein the first-mentioned communication apparatus and said another communication apparatus are adapted to execute communication with data of different kinds.
Claim 17
Dependent Claim
36 words
A communication apparatus according to claim 11, further comprising means for informing that said communication service has been returned, wherein said disconnecting means is adapted to disconnect the line after the information from said informing means.
Claim 18
Dependent Claim
26 words
A communication apparatus according to claim 11, wherein said changing means is adapted to transfer the communication service to another communication apparatus without disconnecting the line.
Claim 19
Dependent Claim
37 words
A communication apparatus according to claim 11, wherein said disconnecting means is adapted to disconnect the line, upon discrimination of a request for line disconnection, when said detecting means detects that the communication service has been returned.
Claim 20
Dependent Claim
72 words
A communication apparatus adapted for use in one of plural terminals connected to a subscriber line belonging to a data communication network, comprising: communication means for communicating with a partner communication apparatus through said data communication network; changing means for changing the communication service, after the completion of communication by said communication means, to another communication apparatus connected to said subscriber line; and display means for indicating said change of communication service.
Claim 21
Dependent Claim
72 words
A communication apparatus adapted for use in one of plural terminals connected to a subscriber line belonging to a data communication network, comprising: communication means for communicating with a partner communication apparatus through said data communication network; changing means for changing the communication service, after the completion of communication by said communication means, to another communication apparatus connected to said subscriber line; and display means for indicating said change of communication service.
Claim 22
Dependent Claim
18 words
A communication apparatus according to claim 17, wherein said data communication network is an integrated service digital network.
Claim 23
Dependent Claim
27 words
A communication apparatus according to claim 17, wherein the first-mentioned communication apparatus and said another communication apparatus are adapted to execute communication with data of different kinds.
Claim 24
Dependent Claim
50 words
A communication apparatus according to claim 17, further comprising detection means for detecting that the communication service is returned after the change of service by said changing means, wherein said display means is adapted to continue the display until said detecting means detects that the communication service has been returned.
Claim 25
Dependent Claim
69 words
A communication apparatus comprising: call setting means for setting a call through a data communication network; data transmission means for transmitting data to a terminal to which the call is set by said call setting means; memory means for storing an audio message; and audio transmission means for automatically transmitting the audio message stored in said memory means after the completion of data transmission by said data transmission means.
Claim 26
Dependent Claim
69 words
A communication apparatus comprising: call setting means for setting a call through a data communication network; data transmission means for transmitting data to a terminal to which the call is set by said call setting means; memory means for storing an audio message; and audio transmission means for automatically transmitting the audio message stored in said memory means after the completion of data transmission by said data transmission means.
Claim 27
Dependent Claim
18 words
A communication apparatus according to claim 21, wherein said data communication network is an integrated service digital network.
Claim 28
Dependent Claim
22 words
A communication apparatus according to claim 21, wherein said audio message indicates that data have been transmitted by said data transmission means.
Claim 29
Dependent Claim
64 words
A communication apparatus according to claim 21, further comprising information means for informing said data communication network of the audio transmission, and reception means for receiving a call for an audio terminal transmitted from said data communication network, wherein said audio transmission means is adapted to transmit the audio message in response to the call to the audio terminal, received by said reception means.
Claim 30
Dependent Claim
38 words
A communication apparatus according to claim 21, wherein said audio transmission means adapted, after the completion of data transmission by said data transmission means, to transmit the audio message stored in said memory means without disconneting the line.
References Cited (Backward Citations)
No citation records indexed.
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