Patent US4524393A successfully refreshed from Google Patents.
US4524393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile communication system
Assignee: Ricoh Co Ltd
•
Filing: 1983-02-18
•
Granted: 1985-06-18
•
Expires: 2003-02-18
Abstract
Abstract A facsimile communication system for carrying out communication between a transmitter and a receiver, whether it is inside or outside of a particular group, is provided. The receiver comprises a facsimile reception system, a first memory for storing information as to terminal numbers and designated communication time of prearranged transmitter terminals, a second memory for storing information as to terminal numbers and temporarily designated communication time of transmitter terminals which are not prearranged, a reception allowable terminal memory to which the terminal number is supplied when the corresponding designated time is reached and a comparator for comparing the terminal number transmitted from the transmitter and the terminal number in the allowable terminal memory, the comparator supplying a reception allowable signal when the two terminal numbers are matched, while, a reception rejection signal when the two terminal numbers are mismatched.
Inventors
- 👤 Yoshiaki Ohzeki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:18
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32037; H04N1/32053; H04N1/32358; H04N1/32363; H04N1/32368
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
207 words
A facsimile communication system for carrying out communication between a transmitter and a receiver, said receiver comprising; a facsimile receiving system for receiving and processing signals transmitted from said transmitter; first storing means for storing transmitter terminal numbers of prearranged transmitters and their designated time for communication; second storing means for storing transmitter terminal numbers of non-prearranged transmitters and their temporarily designated time for communication which is designated in accordance with the request for communication by said non-prearranged transmitters, said second storing means supplying the thus stored terminal numbers and the temporarily designated time to the corresponding non-prearranged transmitters; allowable transmitter terminal number receiving means for receiving a transmitter terminal number from either one of said first and second storing means when the corresponding designated time is reached; and comparing means for comparing the transmitter terminal number contained in said allowable transmitter terminal number receiving means and the transmitter terminal number currently transmitted from the transmitter, said comparing means supplying a reception allowable signal to said transmitter when the two terminal numbers are matched; whereas, said comparing means supplying a reception rejection signal to said transmitter and at the same time an operation command signal to said second storing means when the two terminal numbers are mismatched.
Claim 2
Dependent Claim
207 words
A facsimile communication system for carrying out communication between a transmitter and a receiver, said receiver comprising; a facsimile receiving system for receiving and processing signals transmitted from said transmitter; first storing means for storing transmitter terminal numbers of prearranged transmitters and their designated time for communication; second storing means for storing transmitter terminal numbers of non-prearranged transmitters and their temporarily designated time for communication which is designated in accordance with the request for communication by said non-prearranged transmitters, said second storing means supplying the thus stored terminal numbers and the temporarily designated time to the corresponding non-prearranged transmitters; allowable transmitter terminal number receiving means for receiving a transmitter terminal number from either one of said first and second storing means when the corresponding designated time is reached; and comparing means for comparing the transmitter terminal number contained in said allowable transmitter terminal number receiving means and the transmitter terminal number currently transmitted from the transmitter, said comparing means supplying a reception allowable signal to said transmitter when the two terminal numbers are matched; whereas, said comparing means supplying a reception rejection signal to said transmitter and at the same time an operation command signal to said second storing means when the two terminal numbers are mismatched.
Claim 3
Dependent Claim
65 words
A system of claim 1 wherein said facsimile receiving system includes a net control unit, a MODEM connected to said net control unit, a communication control unit connected to said MODEM for carrying out the communication control by following a predetermined facsimile reception procedure, a decoder for decoding the data transmitted from the transmitter and a plotter for plotting an image on a recording medium.
Claim 4
Dependent Claim
32 words
A system of claim 1 wherein said receiver further comprises an end-of-communication detector for resetting said allowable transmitter terminal number receiving means upon detection of an end-of-communication signal transmitted from said transmitter.
Claim 5
Dependent Claim
47 words
A system of claim 1 wherein said transmitter includes a facsimile transmission system, a transmission allowable time detector for detecting the designated time of communication transmitted from said receiver and an end-of-communication detector for detecting the end of data to be transmitted to supply an end-of-communication signal.
Claim 6
Dependent Claim
69 words
A system of claim 4 wherein said facsimile transmission system includes a scanner for scanning an original, a coder connected to said scanner for coding the data supplied from said scanner, a communication control unit connected to said coder for carrying out the transmission control by following a predetermined facsimile transmission procedure, a MODEM connected to said communication control unit and a net control unit connected to said MODEM.
Claim 7
Dependent Claim
42 words
A system of claim 5 wherein said facsimile transmission system further includes data storing means for temporarily storing the data produced by said scanner and a data selector through which said scanner and said data storing means are connected to said coder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |