Patent US3650137A successfully refreshed from Google Patents.
Patent US5165096A successfully refreshed from Google Patents.
US5165096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image communication apparatus having communication with another communication apparatus and a shared communication line
Assignee: Canon Inc
•
Filing: 1990-12-20
•
Granted: 1992-11-17
•
Expires: 2010-12-20
Abstract
Abstract An image communication apparatus comprises a selector for selecting a first receive mode or a second receive mode, a first detector for detecting a protocol signal of image communication, a second detector for detecting a DTMF signal, and a control unit for effecting the image communication in accordance with the selection by the selector and the detections by the first and second detectors.
Inventors
- 👤 Kouichi Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:25
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/327; H04N1/32704; H04N1/32706; H04N1/3271; H04N1/32005; H04N1/32715; H04N1/32726; H04N1/32728; Y; Y10; Y10S; Y10S379/00; Y10S379/902
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
An image communication apparatus, comprising: line connecting means for selectively connecting a communication line to one of said communication apparatus and a different communication apparatus; detection means for detecting a DTMF signal; and control means for effecting image communication in accordance with the detection by said detection means; wherein said control means effects image communication through the communication line in response to receiving a predetermined DTMF signal through the communication line, and effects image communication with the different communication apparatus in response to receiving a predetermined DTMF signal from the different communication apparatus.
Claim 2
Dependent Claim
93 words
An image communication apparatus, comprising: line connecting means for selectively connecting a communication line to one of said communication apparatus and a different communication apparatus; detection means for detecting a DTMF signal; and control means for effecting image communication in accordance with the detection by said detection means; wherein said control means effects image communication through the communication line in response to receiving a predetermined DTMF signal through the communication line, and effects image communication with the different communication apparatus in response to receiving a predetermined DTMF signal from the different communication apparatus.
Claim 3
Dependent Claim
55 words
An apparatus according to claim 1, further comprising another detection means for detecting a predetermined operation of the different communication apparatus, wherein said control means effects image communication with the different communication apparatus in response to receiving the predetermined DTMF signal after said another detecting means detects the predetermined operation of the different communication apparatus.
Claim 4
Dependent Claim
45 words
An apparatus according to claim 1, further comprising means for effecting speech communication in response to a call through the communication line, wherein said control means switches from speech communication to image communication in response to receiving a predetermined DTMF signal through the communication line.
Claim 5
Dependent Claim
76 words
An image communication apparatus, comprising: line connecting means for selectively connecting a communication line to one of said communication apparatus and a different communication apparatus; first detection means for detecting a predetermined operation of the different communication apparatus; second detection means for detecting a DTMF signal; and control means for effecting image communication with the different communication apparatus in accordance with the detection by said first detection means and the detection by said second detection means.
Claim 6
Dependent Claim
76 words
An image communication apparatus, comprising: line connecting means for selectively connecting a communication line to one of said communication apparatus and a different communication apparatus; first detection means for detecting a predetermined operation of the different communication apparatus; second detection means for detecting a DTMF signal; and control means for effecting image communication with the different communication apparatus in accordance with the detection by said first detection means and the detection by said second detection means.
Claim 7
Dependent Claim
44 words
An apparatus according to claim 4, wherein said control means effects image communication with the different communication apparatus in response to said second detection means detecting a predetermined DTMF signal after said first detecting means detects the predetermined operation of the different communication apparatus.
Claim 8
Dependent Claim
43 words
An apparatus according to claim 5, wherein said control means effects image communication through the communication line in response to said first detection means not detecting a predetermined operation of the different communication apparatus and said detection means detecting the predetermined DTMF signal.
Claim 9
Dependent Claim
20 words
An apparatus according to claim 4, wherein said first detection means detects an on-hook operation of the different communication apparatus.
Claim 10
Dependent Claim
42 words
An apparatus according to claim 4, further effecting speech communication in response to a call through the communication line, wherein said control means switches from speech communication to image communication in response to receiving a predetermined DTMF signal through the communication line.
References Cited (Backward Citations)
US4677660A
Cited
US4584434A
Cited
US4773080A
Cited
US4815121A
Cited
US4825461A
Cited
GB2183427A
Cited
US4800439A
Cited
US4932048A
Cited
JPS62281655A
Cited
JPS63148750A
Cited
US4868865A
Cited
GB2213681A
Cited
US4974253A
Cited
JPH02186759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |