US4523158A
Expired / Lapsed
US
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Clock regenerator using two on-off oscillators
Assignee: RCA Corp
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Filing: 1983-02-02
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Granted: 1985-06-11
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Expires: 2003-02-02
Abstract
Abstract A clock pulse regenerator uses a pair of oscillators each comprising a NOR gate and a transmission line feedback element. The oscillators are provided with complementary data pulses and provide an output signal only when the data signal is of a selected logic level. The output signals are combined to form a continuous regenerated clock signal. An FSK encoder using similar oscillators is also disclosed.
Inventors
- 👤 Mohamed M. A. Megeid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:01
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/24; H04N7/52; H04N7/54; H04N7/56; H04L; H04L27/00; H04L27/10; H04L27/12; H04L7/00; H04L7/02; H04L7/027; H04L7/0276; Y; Y10; Y10S; Y10S331/00; Y10S331/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
Apparatus comprising a first OR gate having a pair of inputs for receiving data signals, and a complementary pair of outputs; a pair of oscillators for producing output signals having substantially the same frequency, each oscillator comprising a NOR gate having a first input coupled to a respective one of said first OR gate outputs, a second input, and an output, and a transmission line coupled between said output and said second input; a second OR gate having a pair of inputs both coupled to one of said first OR gate outputs, and an output for providing delayed data pulses; a third OR gate having a pair of inputs respectively coupled to said NOR gate outputs, and an output for providing regenerated clock pulses; and a transmission line means for delaying said regenerated clock pulses so that the positive going edges thereof occur approximately in the middle of said delayed data pulses.
Claim 2
Dependent Claim
152 words
Apparatus comprising a first OR gate having a pair of inputs for receiving data signals, and a complementary pair of outputs; a pair of oscillators for producing output signals having substantially the same frequency, each oscillator comprising a NOR gate having a first input coupled to a respective one of said first OR gate outputs, a second input, and an output, and a transmission line coupled between said output and said second input; a second OR gate having a pair of inputs both coupled to one of said first OR gate outputs, and an output for providing delayed data pulses; a third OR gate having a pair of inputs respectively coupled to said NOR gate outputs, and an output for providing regenerated clock pulses; and a transmission line means for delaying said regenerated clock pulses so that the positive going edges thereof occur approximately in the middle of said delayed data pulses.
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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |