US5202915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single line communication apparatus for speech and data and method therefor
Assignee: Canon Inc
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Filing: 1992-07-20
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Granted: 1993-04-13
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Expires: 2012-07-20
Abstract
Abstract In a single line communication apparatus for both telephone and data (e.g., facsimile), the communication line is switched from a telephone to a data communication unit when an incoming data call is received in response to an indication for data communication from the telephone. The communication line is monitored to detect the occurrence of a non-aural terminal calling tone (CNG) within a predetermined time period. Upon detection of the CNG tone within the predetermined time period, a non-aural called party discrimination signal (CED) is transmitted to indicate the start of a data communication.
Inventors
- 👤 Teruyuki Nishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:00
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
144 words
A data communication apparatus, in which a remote telephone can be connected and a single communication line is selectively used for speech communication by the telephone and data communication by a data communication means, comprising: detection mean for detecting a remote indication for starting data communication from the telephone remote from the data communication means; switch-over means for switching over the communication line from the telephone to the data communication means in response to the remote indication; control means for detecting reception of a signal related to data communication after the communication line has been switched over to the data communication means by the switch-over means, and for controlling a start of data communication in response to the signal reception detection; and information means for informing an operator at the telephone by a sound that data communication has been started by said control means.
Claim 2
Dependent Claim
144 words
A data communication apparatus, in which a remote telephone can be connected and a single communication line is selectively used for speech communication by the telephone and data communication by a data communication means, comprising: detection mean for detecting a remote indication for starting data communication from the telephone remote from the data communication means; switch-over means for switching over the communication line from the telephone to the data communication means in response to the remote indication; control means for detecting reception of a signal related to data communication after the communication line has been switched over to the data communication means by the switch-over means, and for controlling a start of data communication in response to the signal reception detection; and information means for informing an operator at the telephone by a sound that data communication has been started by said control means.
Claim 3
Dependent Claim
42 words
A data communication system according to claim 1, wherein said control means switches over the communication line from the data communication means to the telephone when the signal related to data communication has not been received within a predetermined period of time.
Claim 4
Dependent Claim
22 words
A data communication system according to claim 1, wherein said control means detects that a signal indicating facsimile communication has been received.
Claim 5
Dependent Claim
28 words
A data communication system according to claim 1, wherein said information means also informs of the start of communication from a speaker incorporated in the data communication means.
Claim 6
Dependent Claim
37 words
A data communication system according to claim 1, wherein said control means generates a prescribed signal tone which said information means announces to the operator in response to the reception of the signal related to data communication.
Claim 7
Dependent Claim
145 words
A data communication method for use in a system in which a single communication line is selectively used for speech communication by a remote telephone and data communication by a data communication means, and the data communication is initiated during speech communication by the telephone, comprising the steps of: transmitting a remote indication for starting data communication from the telephone to the data communication means, the telephone being remote from the data communication means; switching over the communication line from the speech communication by the telephone to the data communication by the data communication means in response to the remote indication for data communication; detecting reception of a signal related to data communication from the communication line; controlling a start of data communication in response to the signal detection; and informing an operator at the telephone by a sound that data communication has been started.
Claim 8
Dependent Claim
145 words
A data communication method for use in a system in which a single communication line is selectively used for speech communication by a remote telephone and data communication by a data communication means, and the data communication is initiated during speech communication by the telephone, comprising the steps of: transmitting a remote indication for starting data communication from the telephone to the data communication means, the telephone being remote from the data communication means; switching over the communication line from the speech communication by the telephone to the data communication by the data communication means in response to the remote indication for data communication; detecting reception of a signal related to data communication from the communication line; controlling a start of data communication in response to the signal detection; and informing an operator at the telephone by a sound that data communication has been started.
Claim 9
Dependent Claim
45 words
A data communication method according to claim 6, wherein said control step switches over the communication line from the data communication means to the telephone in a case where the signal related to data communication has not been received within a predetermined period of time.
Claim 10
Dependent Claim
22 words
A data communication method according to claim 6, wherein said control step detects that a signal indicating facsimile communication has been received.
Claim 11
Dependent Claim
28 words
A data communication method according to claim 6, wherein said information step also informs of the start of communication from a speaker incorporated in the data communication means.
Claim 12
Dependent Claim
44 words
A data communication according to claim 6, wherein said control step comprises generating a prescribed signal tone which said information step announces to the operator in response to the reception of the signal related to data communication, and informs the start of data communication.
Claim 13
Dependent Claim
125 words
A data communication apparatus in which a remote telephone is connected, comprising: data communication means for data communication, the telephone being remote from said data communication means; switching means for selectively connecting the telephone or said data communication means with a communication line; detection means for detecting a remote indication for starting data communication from the telephone; control means for switching over said switching means from the telephoned to the data communication means in response to the indication, detecting a signal related to data communication from the line, and controlling the start of data communication in response to the detected signal; and information means for informing an operator at the telephone by a sound that the data communication has been started by said control means.
Claim 14
Dependent Claim
125 words
A data communication apparatus in which a remote telephone is connected, comprising: data communication means for data communication, the telephone being remote from said data communication means; switching means for selectively connecting the telephone or said data communication means with a communication line; detection means for detecting a remote indication for starting data communication from the telephone; control means for switching over said switching means from the telephoned to the data communication means in response to the indication, detecting a signal related to data communication from the line, and controlling the start of data communication in response to the detected signal; and information means for informing an operator at the telephone by a sound that the data communication has been started by said control means.
Claim 15
Dependent Claim
42 words
A data communication apparatus according to claim 11, wherein said control means switches over the communication line from the data communication means to the telephone when the signal related to data communication has not been received within a predetermined period of time.
Claim 16
Dependent Claim
22 words
A data communication apparatus according to claim 11, wherein said control means detects that a signal indicating facsimile communication has been received.
Claim 17
Dependent Claim
37 words
A data communication apparatus according to claim 11, wherein said control means generates a prescribed signal tone which said information means announces to the operator in response to the reception of the signal related to data communication.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-12 | 1996-10-12 | 1997-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-12 | 2000-10-12 | 2001-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-12 | 2004-10-12 | 2005-04-13 | $7700.00 | Window Closed / Lapsed |