Patent US4044382A successfully refreshed from Google Patents.
US4044382A
Expired / Lapsed
US
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Transmitting system for facsimile and the like
Assignee: Oki Electric Industry Co Ltd
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Filing: 1975-08-13
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Granted: 1977-08-23
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Expires: 1995-08-13
Abstract
Abstract In scanning an original picture, if a large portion of a scanning line consists of only white (or only black), that portion is not transmitted. Thus, the transmitting time of a picture can be reduced. The facsimile signal consists of a synchronizing signal, a group weight indicator signal and an image signal. The image signals for each scanning line are applied only once to an operational treating circuit, so as to immediately evaluate the image signals for producing group weight indicator signals and the picture signals and for storing the signals thus produced in corresponding storing means. The synchronizing signals are stored separately in a storing means, so as to be read out from the storing means and delivered to a transmission circuit, whereby, said signal arrays are continuously read from the storing means and successively delivered to the transmission circuit.
Inventors
- 👤 Tohmi Yagishita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:34
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/41; H04N1/411; H04N1/413; H04N1/415
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
211 words
A transmitting system for facsimile comprising: a. a first shift register (6) the input of which is connected to an image signal terminal through a binary converter (5), b. a ring-register (13) for storing a predetermined pattern of synchronizing signals, c. a second shift register (8) whose input is connected to said first shift register (6) through an OR circuit (7) so that each place of the second shift register (8) is written one whenever at least one place of the first shift register (6) is one, thus enabling the second shift register (8) to store a pattern of a group weight indicator signal, d. a third shift register (9) whose input is connected to said first shift register (6), for receiving the content of said first shift register (6) only when the first place of said second shift register (8) is one, e. an OR circuit (12) whose output is connected to the output of the transmitting system and whose inputs are connected to the outputs of said ring register (13), said second shift register (8) and said third shift register (9), respectively, and f. switching means (14, 15, 16) for controlling the operation of said ring register 13, said second shift register (8) and said third shift register (9).
Claim 2
Dependent Claim
211 words
A transmitting system for facsimile comprising: a. a first shift register (6) the input of which is connected to an image signal terminal through a binary converter (5), b. a ring-register (13) for storing a predetermined pattern of synchronizing signals, c. a second shift register (8) whose input is connected to said first shift register (6) through an OR circuit (7) so that each place of the second shift register (8) is written one whenever at least one place of the first shift register (6) is one, thus enabling the second shift register (8) to store a pattern of a group weight indicator signal, d. a third shift register (9) whose input is connected to said first shift register (6), for receiving the content of said first shift register (6) only when the first place of said second shift register (8) is one, e. an OR circuit (12) whose output is connected to the output of the transmitting system and whose inputs are connected to the outputs of said ring register (13), said second shift register (8) and said third shift register (9), respectively, and f. switching means (14, 15, 16) for controlling the operation of said ring register 13, said second shift register (8) and said third shift register (9).
Claim 3
Dependent Claim
20 words
A transmitting system for facsimile according to claim 1, wherein the capacity of said first shift register is 16 bits.
Claim 4
Dependent Claim
112 words
A transmitting system according to claim 1 wherein said image signal terminal delivers in succession to said input of said first shift register image signals from a number of scanned lines and wherein said switching means controls said ring register 14, said second shift register (8) and said third shift register (9) such that the image signals for each scanning line are processed independently of the image signals of every other line and are arranged for transmission into a signal array including a synchronizing signal read out from said ring register, group weight indicator signals read out from said second shift register, and picture signals read out from said third shift register.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |