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US3597684A
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Opticals method utilizing light modulation for the transfer of information from one potential level to another and device for the application of this method
Assignee: Nokia Oyj
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Filing: 1969-02-10
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Granted: 1971-08-03
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Expires: 1989-02-10
Abstract
Abstract A method for transferring information optically by means of light, which is time division modulated, in such a way that pulse groups, which are time separated and contain a set number of pulses, are generated at ground potential, converted from series to parallel form, and have information added thereto by selectively removing and leaving pulses in the groups. A subsequent parallel-to-series conversion is effected and the resulting pulse groups are transferred by a light emitting means through an insulating means to light sensitive means where the series of pulses is again converted to parallel form and directed to the appropriate indicating circuit.
Inventors
- 👤 Weli H J Damen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:06
CPC Classifications
H; H04; H04B; H04B10/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
342 words
A method for the transfer of information from one potential level to another, e.g. from ground potential to the protection devices of a series capacitor bank, and vice versa, comprising the steps of: a. generating at a first potential level pulse trains separated from each other in regard to time and containing 2N pulses each; b. separating from said pulse trains every other pulse (1, 3, 5, ...2N-1) to form synchronizing pulse trains and every other pulse (2, 4, 6, ...2N) to form information pulse trains; c. converting said information pulse trains into parallel form; d. adding information to the signal by selectively removing pulses; e. converting said pulses into series mode; f. combining the information pulse trains and synchronizing pulse trains into original pulse trains (1, 2, 3, ...2N) in which the even numbered positions (2, 4, 6, ...2N) may be left out depending on the information; g. transferring the information from said first potential level to said other potential level optically by means of light, modulated according to the time division principle; h. indicating the presence of light pulse trains; i. separating every other of the pulse trainS, i.e. the pulse position trains (2, 4, 6, ...2N) carrying information; j. converting said last mentioned pulse trains into parallel mode; k. directing each of said pulse trains to a corresponding indicating circuit for indicating the information of the pulse position; l. separating every other, odd numbered pulse (1, 3, 5, ...2N-1) in the train received. m. converting said odd numbered pulses into parallel mode; n. adding to said odd numbered pulses the information to be transmitted in the opposite direction by selectively removing pulses; o. converting said odd numbered pulses into series mode; p. transmitting the resulting new information pulse train back to the first potential level; q. converting said pulses into electrical pulse trains. r. converting the pulse positions of said electrical pulse trains from series mode into parallel mode; s. directing each of said pulse positions to its own indicating circuit which indicates the information carried by the pulse.
Claim 2
Independent Claim
342 words
A method for the transfer of information from one potential level to another, e.g. from ground potential to the protection devices of a series capacitor bank, and vice versa, comprising the steps of: a. generating at a first potential level pulse trains separated from each other in regard to time and containing 2N pulses each; b. separating from said pulse trains every other pulse (1, 3, 5, ...2N-1) to form synchronizing pulse trains and every other pulse (2, 4, 6, ...2N) to form information pulse trains; c. converting said information pulse trains into parallel form; d. adding information to the signal by selectively removing pulses; e. converting said pulses into series mode; f. combining the information pulse trains and synchronizing pulse trains into original pulse trains (1, 2, 3, ...2N) in which the even numbered positions (2, 4, 6, ...2N) may be left out depending on the information; g. transferring the information from said first potential level to said other potential level optically by means of light, modulated according to the time division principle; h. indicating the presence of light pulse trains; i. separating every other of the pulse trainS, i.e. the pulse position trains (2, 4, 6, ...2N) carrying information; j. converting said last mentioned pulse trains into parallel mode; k. directing each of said pulse trains to a corresponding indicating circuit for indicating the information of the pulse position; l. separating every other, odd numbered pulse (1, 3, 5, ...2N-1) in the train received. m. converting said odd numbered pulses into parallel mode; n. adding to said odd numbered pulses the information to be transmitted in the opposite direction by selectively removing pulses; o. converting said odd numbered pulses into series mode; p. transmitting the resulting new information pulse train back to the first potential level; q. converting said pulses into electrical pulse trains. r. converting the pulse positions of said electrical pulse trains from series mode into parallel mode; s. directing each of said pulse positions to its own indicating circuit which indicates the information carried by the pulse.
Claim 3
Independent Claim
406 words
A device for the transfer of information from one potential level to another, e.g. from ground potential to the protection devices of a series capacitor bank, and vice versa, comprising: a. means for generating at a first potential level pulse trains separated from each other in regard to time and containing 2N pulses each; b. a frequency dividing circuit separating every other pulse (1, 3, 5, ...2N-1) from said pulse trains to form synchronizing pulse trains and every remaining pulse (2, 4, 6, ...2N) to form information pulse trains; c. a first series-to-parallel converter converting said information pulse trains into parallel form; d. means for adding information to the signal by selectively removing a pulse; e. a first parallel-to-series converter converting said pulses into series mode; f. means for combining the information pulse trains and synchronizing pulse trains into original pulse trains (1, 2, 3, ...2N) in which the even numbered positions (2, 4, 6, ...2N) may be left out depending on the information; g. a first light emitting means passing light through an electrically but light permeable medium from said first potential level to said another potential level for transferring the information optically, modulated according to time division. h. a first light sensitive means for indicating presence of the light pulse trains; i. a pulse separating circuit separating the pulse trains carrying information; j. a second series-to-parallel converter converting said last mentioned pulse trains into parallel mode; k. means for directing each of said pulse trains to a corresponding indicating circuit indicating the information of the pulse position; l. a pulse arranging circuit separating every other, odd numbered pulse in the train received; m. a second series-to-parallel converter converting said odd numbered pulses into a parallel mode; n. means for adding to said odd numbered pulses the information to be transmitted in the opposite direction by selectively removing the pulse in question; o. a second parallel-to-series converter converting said odd numbered pulses into a series mode; p. a second light emitting means transmitting the resulting new information pulse train through said insulating medium back to the first potential level; q. a second light sensitive means for converting said pulses into electrical pulse trains; r. said first series-to-parallel converter converting the pulse positions of said electrical pulse trains from series mode into parallel mode; s. means for directing each of said pulse positions to its own indicating circuit which indicates the information carried by the pulse.
Claim 4
Independent Claim
406 words
A device for the transfer of information from one potential level to another, e.g. from ground potential to the protection devices of a series capacitor bank, and vice versa, comprising: a. means for generating at a first potential level pulse trains separated from each other in regard to time and containing 2N pulses each; b. a frequency dividing circuit separating every other pulse (1, 3, 5, ...2N-1) from said pulse trains to form synchronizing pulse trains and every remaining pulse (2, 4, 6, ...2N) to form information pulse trains; c. a first series-to-parallel converter converting said information pulse trains into parallel form; d. means for adding information to the signal by selectively removing a pulse; e. a first parallel-to-series converter converting said pulses into series mode; f. means for combining the information pulse trains and synchronizing pulse trains into original pulse trains (1, 2, 3, ...2N) in which the even numbered positions (2, 4, 6, ...2N) may be left out depending on the information; g. a first light emitting means passing light through an electrically but light permeable medium from said first potential level to said another potential level for transferring the information optically, modulated according to time division. h. a first light sensitive means for indicating presence of the light pulse trains; i. a pulse separating circuit separating the pulse trains carrying information; j. a second series-to-parallel converter converting said last mentioned pulse trains into parallel mode; k. means for directing each of said pulse trains to a corresponding indicating circuit indicating the information of the pulse position; l. a pulse arranging circuit separating every other, odd numbered pulse in the train received; m. a second series-to-parallel converter converting said odd numbered pulses into a parallel mode; n. means for adding to said odd numbered pulses the information to be transmitted in the opposite direction by selectively removing the pulse in question; o. a second parallel-to-series converter converting said odd numbered pulses into a series mode; p. a second light emitting means transmitting the resulting new information pulse train through said insulating medium back to the first potential level; q. a second light sensitive means for converting said pulses into electrical pulse trains; r. said first series-to-parallel converter converting the pulse positions of said electrical pulse trains from series mode into parallel mode; s. means for directing each of said pulse positions to its own indicating circuit which indicates the information carried by the pulse.
Claim 5
Dependent Claim
52 words
A device for the transfer of information from one potential level to another according to claim 2 further comprising means defining a closed space and connecting that portion of said device at one potential that the portion at another potential and permitting optical information transfer while protecting against atmospheric and mechanical disturbances.
Claim 6
Dependent Claim
30 words
A device for the transfer of information from one potential level to another according to claim 3 wherein said means defining a closed space comprises a gas filled hollow insulator.
Claim 7
Dependent Claim
31 words
A device for the transfer of information from one potential level to another according to claim 3 wherein said means defining a closed space comprises a plurality of light conductive filaments.
Claim 8
Dependent Claim
25 words
A device for the transfer of information from one potential level to another according to claim 2 wherein said light emitting means comprises a semiconductor.
Claim 9
Dependent Claim
26 words
A device for the transfer of information from one potential level to another according to claim 2 wherein said light emitting means comprises a discharge tube.
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |