US4016432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable rate rotary pulse generator
Assignee: HP Inc
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Filing: 1975-10-01
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Granted: 1977-04-05
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Expires: 1995-10-01
Abstract
Abstract A counter circuit is incremented and decremented at a rate having a non-linear dependence on the rotational speed and direction of a rotary pulse generator.
Inventors
- 👤 Michael S. Marzalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:27
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/02; G01P13/04; G01P13/045; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/486; G01P3/489; H; H03; H03K; H03K5/00; H03K5/22; H03K5/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
Pulse generating apparatus comprising: generating means having a rotating element for providing a first digital signal in response to the rotation of said rotating element at varying speeds; speed sensing means coupled to the generating means for producing a control signal representing the rotational speed of the rotating element in response to the first digital signal; and variable pulse dividing means coupled to generating means and the speed sensing means for producing a variable division ratio digital output signal which is a function of the varying pulse repetition rate of the first digital signal and the control signal.
Claim 2
Dependent Claim
98 words
Pulse generating apparatus comprising: generating means having a rotating element for providing a first digital signal in response to the rotation of said rotating element at varying speeds; speed sensing means coupled to the generating means for producing a control signal representing the rotational speed of the rotating element in response to the first digital signal; and variable pulse dividing means coupled to generating means and the speed sensing means for producing a variable division ratio digital output signal which is a function of the varying pulse repetition rate of the first digital signal and the control signal.
Claim 3
Dependent Claim
49 words
The apparatus of claim 1 wherein the generator means provides a second digital signal and further comprising direction sensing means coupled to the generating means for producing a mode control signal indicating the direction of rotation of said rotating element in response to the first and second digital signals.
Claim 4
Dependent Claim
49 words
The apparatus of claim 2 further comprising a counter having an increment and a decrement mode of operation and coupled to the dividing means for counting in response to the output signal and for selecting the increment and decrement mode of operation in response to the mode control signal.
Claim 5
Dependent Claim
54 words
The apparatus of claim 3 wherein the rotating element comprises a disc having opaque and clear segments and the generating means comprises a light source disposed to shine through the disc and onto a first and a second photosensitive device, said first and second photosensitive devices producing said first and second digital signals, respectively.
Claim 6
Dependent Claim
86 words
The apparatus of claim 3 wherein the dividing means comprises: pulse shaping means coupled to the generating means for producing control pulses having a predetermined pulse width in response to the first digital signal; integrating means coupled to the pulse shaping means for providing an enable signal in response to the control pulses and the control signal; and gating means coupled to the pulse shaping means and to the integrating means for producing said output signal in response to the control pulses and the enable 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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |