Patent US3597601A successfully refreshed from Google Patents.
US3597601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for generating the derivative of stepped voltage function
Assignee: Robert Bosch Fernsehanlagen GmbH
•
Filing: 1969-01-30
•
Granted: 1971-08-03
•
Expires: 1989-01-30
Abstract
Abstract A first sampling circuit samples an input voltage function at arbitrary time intervals. The sampling pulse has a short duration compared to the interval between successive samplings. The sample values are stored until the arrival of the next sample value. A resistor connected in series with a capacitor provides during each sampling a pulse-shaped voltage that is transferred to a second capacitor by means of a second sampling circuit working synchronously with the first. The transfer of charges is such that there appears across the latter capacitor a stepped voltage that is the derivative of the input voltage function.
Inventors
- 👤 Herbert Bahring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:36
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06G7/25
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
An arrangement for generating the derivative of an input voltage function, comprising, in combination, first sampling means for sampling values of said voltage function at arbitrary time intervals; a first capacitor connected to the output of said first sampling means for storing the sampled value of said input voltage until the next sampling instant when the next sampled value is obtained by said sampling means; resistor means connected between said first capacitor and a reference potential; second sampling means working synchronously with said first sampling means, the input of said second sampling means being connected to the junction between said first capacitor and said resistor means; and a second capacitor connected to the output of said second sampling means so that there appears across said second capacitor a stepped voltage that is the derivative of said input voltage function.
Claim 2
Dependent Claim
139 words
An arrangement for generating the derivative of an input voltage function, comprising, in combination, first sampling means for sampling values of said voltage function at arbitrary time intervals; a first capacitor connected to the output of said first sampling means for storing the sampled value of said input voltage until the next sampling instant when the next sampled value is obtained by said sampling means; resistor means connected between said first capacitor and a reference potential; second sampling means working synchronously with said first sampling means, the input of said second sampling means being connected to the junction between said first capacitor and said resistor means; and a second capacitor connected to the output of said second sampling means so that there appears across said second capacitor a stepped voltage that is the derivative of said input voltage function.
Claim 3
Dependent Claim
43 words
The arrangement for generating the derivative of an input voltage function as defined in claim 1, wherein said first and second saMpling means are pulsed from the same source for pulsing said first and second sampling means with sampling pulses of constant duration.
Claim 4
Dependent Claim
31 words
The arrangement for generating the derivative of an input voltage function as defined in claim 2, wherein said sampling pulse duration is short compared to the interval between successive sampling pulses.
Claim 5
Dependent Claim
37 words
The arrangement for generating the derivative of an input voltage function as defined in claim 1, including amplifying means connecting the input of said second sampling means to said junction between said first capacitor and said resistor.
Claim 6
Dependent Claim
31 words
The arrangement for generating the derivative of an input voltage function as defined in claim 4, wherein said amplifying means includes transistor connected rounded emitter to obtain a low output impedance.
Claim 7
Dependent Claim
28 words
The arrangement for generating the derivative of an input voltage function as defined in claim 1, herein each of said first and second sampling means comprises field-effect transistor.
Claim 8
Dependent Claim
38 words
The arrangement for generating the derivative of an input voltage function as defined in claim 5, including coupling transformer means connected between the input of said amplifying means and said junction between said first capacitor and said resistor.
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) | 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 |