Patent US7163561B2 successfully refreshed from Google Patents.
US3752912A
Expired / Lapsed
US
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System for converting facsimile signals
Assignee: Japan Broadcasting Corp
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Filing: 1970-11-23
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Granted: 1973-08-14
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Expires: 1990-11-23
Abstract
Abstract A system for converting facsimile signals, in which an analog facsimile signal is sampled, the sampled signal is compressed into a plurality of intermittently arranged pulse bundles, and the intermittent pulse bundles are converted into a continuous pulse train. The continuous pulse train thus produced is converted into a high frequency signal such as a television signal.
Inventors
- 👤 H Ohsawa
- 👤 K Sasabe
- 👤 K Enosawa
- 👤 H Hayami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:28
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00127; H04N1/00281; H04N1/00283; H04N1/00299; H04N1/00095; H04N1/00098
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A system for converting facsimile signals comprising: means for sampling the facsimile signal, first storing means for storing the sampled signal, first controlling means for controlling the rate of writing and reading of the sampled signal in and out of said first storing means thereby compressing the sampled signal every predetermined interval to produce intermittently arranged compressed signals, second storing means comprising a circulating circuit, and second control means for controlling the time of insertion of said intermittently arranged compressed signals into said circulating circuit, said second storing means receiving said intermittently arranged compressed signals at the controlled time, circulating said intermittently arranged compressed signals so as to form a continuous compressed signal and storing said continuous compressed signal.
Claim 2
Independent Claim
119 words
A system for converting facsimile signals comprising: means for sampling the facsimile signal, first storing means for storing the sampled signal, first controlling means for controlling the rate of writing and reading of the sampled signal in and out of said first storing means thereby compressing the sampled signal every predetermined interval to produce intermittently arranged compressed signals, second storing means comprising a circulating circuit, and second control means for controlling the time of insertion of said intermittently arranged compressed signals into said circulating circuit, said second storing means receiving said intermittently arranged compressed signals at the controlled time, circulating said intermittently arranged compressed signals so as to form a continuous compressed signal and storing said continuous compressed signal.
Claim 3
Dependent Claim
17 words
A system according to claim 1, wherein said second storing means includes at least one delay line.
Claim 4
Dependent Claim
16 words
A system according to claim 1, wherein said second storing means consists of a magnetic disc.
Claim 5
Dependent Claim
81 words
A system according to claim 3, wherein said magnetic disc is provided in the circumferential direction thereof with clock pulse marks representing clock positions in the circumferential direction and each producing a clock pulse signal, and said second controlling means controls the time of insertion of said intermittently arranged compressed signals into said magnetic disc by controlling the writing and reading times of the sampled signal in and out of said first storing means in response to said clock pulse signal.
Claim 6
Dependent Claim
69 words
A system according to claim 1, wherein said system further comprises means for coding said sampled signal to be applied to said first storing means and means for decoding the coded intermittently arranged compressed signals read out of said first storing means, said second storing means storing the continuous compressed signal resulting from circulating said decoded intermittently arranged compressed signal inserted into said circulating circuit at the controlled time.
Claim 7
Dependent Claim
17 words
A system accordiNg to claim 5, wherein said second storing means includes at least one delay line.
Claim 8
Dependent Claim
16 words
A system according to claim 5, wherein said second storing means consists of a magnetic disc.
Claim 9
Dependent Claim
81 words
A system according to claim 7, wherein said magnetic disc is provided in the circumferential direction thereof with clock pulse marks representing clock positions in the circumferential direction and each producing a clock pulse signal, and said second controlling means controls the time of insertion of said intermittently arranged compressed signals into said magnetic disc by controlling the writing and reading times of the sample signal in and out of said first storing means under receipt of said clock pulse signal.
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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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |