US3585413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical logic circuit
Assignee: KDDI Corp
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Filing: 1968-09-09
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Granted: 1971-06-15
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Expires: 1988-09-09
Abstract
Abstract A optical logic circuit comprising a plurality of groups connected in cascade arrangement, where each of the groups comprises at least one bistable laser, the plural groups being pumped by polyphase pumping inputs which are successively switched at overlapped periods, two outputs of at least one bistable laser of a preceding group are employed to quench respectively different laser elements of at least one bistable laser of a just succeeding group.
Inventors
- 👤 Yukio Nakagome
- 👤 Yasuo Koseki
- 👤 Takao Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:13
CPC Classifications
G; G02; G02F; G02F3/00; G02F3/02; G02F3/026; H; H01; H01S; H01S3/00; H01S3/10; H01S3/102; H01S3/1022
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
An optical logic circuit, comprising a plurality of bistable devices each having two laser elements, said devices being divided into a plurality of groups connected in cascade arrangement, two outputs of each of the bistable laser devices having complement relationship to each other, polyphase pumping means having two outputs which are successively switched at overlapped periods, said bistable laser devices having inputs connected to said outputs, wherein two outputs of at least one bistable laser device of one of said groups are employed to quench respectively different laser elements of at least one bistable laser device of a just succeeding group.
Claim 2
Dependent Claim
101 words
An optical logic circuit, comprising a plurality of bistable devices each having two laser elements, said devices being divided into a plurality of groups connected in cascade arrangement, two outputs of each of the bistable laser devices having complement relationship to each other, polyphase pumping means having two outputs which are successively switched at overlapped periods, said bistable laser devices having inputs connected to said outputs, wherein two outputs of at least one bistable laser device of one of said groups are employed to quench respectively different laser elements of at least one bistable laser device of a just succeeding group.
Claim 3
Dependent Claim
36 words
An optical logic circuit according to claim 1, in which the optical logic circuit comprises a controlling group of at least one bistable laser device and a controlled group of at least one bistable laser device.
Claim 4
Dependent Claim
77 words
An optical logic circuit according to claim 2, in which the controlling group comprises two bistable laser devices and the controlled group comprises a bistable laser device, a constant quenching input being applied to a laser element of the bistable laser device of the controlled group, the laser element generating an output when the bistable laser device of the controlled group assumed the state 1, whereby the optical logic circuit performs AND operation at the controlled group.
Claim 5
Dependent Claim
78 words
An optical logic circuit according to claim 2, in which the controlling group comprises two bistable laser devices and the controlled group comprises a single bistable laser device, a constant quenching input being applied to a laser element of the bistable laser device of the controlled group, the laser element generating an output when the bistable laser device of the controlled group assumes the state 0, whereby the optical logic circuit performs OR operation at the controlled group.
Claim 6
Dependent Claim
103 words
An optical logic circuit according to claim 2, in which the controlling group comprises a bistable laser device and the controlled group comprises a bistable laser device, and in which a laser element of the bistable laser device of the controlling group generating an output when the bistable laser device of the controlling group assumes the state 1 supplies a quenching input to a laser element of the bistable laser device of the controlled group generating an output when the bistable laser device of the controlled group assumes the state 1, whereby the optical logic circuit performs NOT operation at the controlled group.
Claim 7
Dependent Claim
113 words
An optical logic circuit according to claim 2, in which the controlling group comprises a bistable laser device and the controlled group comprises a bistable laser device, and in which a laser element of the bistable laser device of the controlling group generating an output when the bIstable laser device of the controlling group assumes the state 1 supplies a quenching input to a laser element of the bistable laser device of the controlled group generating an output when the bistable laser device of the controlled group assumes the state 0, whereby the optical logic circuit forms a shift register to shift a binary information from the controlling group to the controlled group.
Claim 8
Dependent Claim
128 words
An optical logic circuit, comprising: a plurality of bistable lasers divided into a controlling group and a controlled group, the controlling group comprising two bistable lasers, the controlled group comprising a single bistable laser, each of the bistable lasers comprising two laser elements and generating two outputs having complement relationship to each other, means for pumping the controlling group and the controlled group by polyphase pumping inputs which are successively switched at overlapped periods, means for applying the two outputs of each of two bistable lasers of the controlling group to the controlled group to quench respectively different laser elements of the bistable laser therein, and means for applying a constant quenching input to one of said two laser elements of the bistable laser in the controlled group.
Claim 9
Dependent Claim
128 words
An optical logic circuit, comprising: a plurality of bistable lasers divided into a controlling group and a controlled group, the controlling group comprising two bistable lasers, the controlled group comprising a single bistable laser, each of the bistable lasers comprising two laser elements and generating two outputs having complement relationship to each other, means for pumping the controlling group and the controlled group by polyphase pumping inputs which are successively switched at overlapped periods, means for applying the two outputs of each of two bistable lasers of the controlling group to the controlled group to quench respectively different laser elements of the bistable laser therein, and means for applying a constant quenching input to one of said two laser elements of the bistable laser in the controlled group.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |