US4092725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic transform system
Assignee: Raytheon Co
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Filing: 1977-03-28
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Granted: 1978-05-30
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Expires: 1997-03-28
Abstract
Abstract An electronic system providing discrete mathematical transforms includes a charge-coupled transversal filter, a pair of sample and hold circuits connected to the output of the filter, and a differential amplifier connected to the outputs of the pair of sample and hold circuits. An analog-to-digital converter is connected to the output of the differential amplifier. A transmitter of intelligence is connected to the output of the analog-to-digital converter for sending compressed intelligence via a data link.
Inventors
- 👤 George H. Hershman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:13
CPC Classifications
H; H03; H03H; H03H15/00; H03H15/02; G; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1907; G06J; G06J1/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
56 words
An electronic system for providing discrete mathematical transforms, comprising the combination: a charge-coupled transversal filter; a pair of sample and hold circuits connected to the output of the filter; a differential amplifier connected to the output of the pair of sample and hold circuits; and an analog-to-digital converter connected to the output of the differential amplifier.
Claim 2
Dependent Claim
56 words
An electronic system for providing discrete mathematical transforms, comprising the combination: a charge-coupled transversal filter; a pair of sample and hold circuits connected to the output of the filter; a differential amplifier connected to the output of the pair of sample and hold circuits; and an analog-to-digital converter connected to the output of the differential amplifier.
Claim 3
Dependent Claim
21 words
The invention as stated in claim 1, including a transmitter of digital intelligence connected to the output of the analog-to-digital converter.
Claim 4
Dependent Claim
15 words
The invention as stated in claim 2, including a receiver electromagnetically coupled to the transmitter.
Claim 5
Dependent Claim
18 words
The invention as stated in claim 3, including a digital-to-analog converter connected to the output of the receiver.
Claim 6
Dependent Claim
29 words
The invention as stated in claim 4, including means connected to the output of the digital-to-analog converter for converting a direct transform to intelligence as a function of time.
Claim 7
Dependent Claim
82 words
An electronic system for providing mathematical transforms, comprising the combination: a plural number of charge-coupled transversal filters; a plural number of pairs of sample and hold circuits connected to the filters, one filter per each corresponding pair of sample and hold circuit; a plural number of differential amplifiers, connected to the plural number of pairs of sample and hold circuits, one pair of said circuits per each corresponding amplifer; and an electronic parallel-to-serial converter connected to the outputs of the differential amplifiers.
Claim 8
Dependent Claim
82 words
An electronic system for providing mathematical transforms, comprising the combination: a plural number of charge-coupled transversal filters; a plural number of pairs of sample and hold circuits connected to the filters, one filter per each corresponding pair of sample and hold circuit; a plural number of differential amplifiers, connected to the plural number of pairs of sample and hold circuits, one pair of said circuits per each corresponding amplifer; and an electronic parallel-to-serial converter connected to the outputs of the differential amplifiers.
Claim 9
Dependent Claim
27 words
The invention as stated in claim 6, including means connected to the output of the parallel-to-serial converter for inverse transforming data inputted thereto into the time domain.
Claim 10
Dependent Claim
19 words
The invention as stated in claim 6, including an analog-to-digital converter connected to the outputs of the differential amplifiers.
Claim 11
Dependent Claim
21 words
The invention as stated in claim 8, including a transmitter of digital intelligence connected to the output of the analog-to-digital converter.
Claim 12
Dependent Claim
15 words
The invention as stated in claim 9, including a receiver electromagnetically coupled to the transmitter.
Claim 13
Dependent Claim
18 words
The invention as stated in claim 10, including a digital-to-analog converter connected to the output of the receiver.
Claim 14
Dependent Claim
27 words
The invention as stated in claim 11, including means connected to the output of the digital-to-analog converter for providing intelligence output therefrom as a function of time.
Claim 15
Independent Claim
75 words
A method for electronically providing discrete mathematical transforms, comprising in combination the steps of: (a) generating a signal comprising a carrier modulated by intelligence; (b) sampling the generated signal and providing at least one set of summed intelligence components; (c) selecting a predetermined portion of each of said at least one set of summed intelligence; and (d) sensing the difference between two selected portions of each of said at least one set of summed intelligence.
Claim 16
Independent Claim
75 words
A method for electronically providing discrete mathematical transforms, comprising in combination the steps of: (a) generating a signal comprising a carrier modulated by intelligence; (b) sampling the generated signal and providing at least one set of summed intelligence components; (c) selecting a predetermined portion of each of said at least one set of summed intelligence; and (d) sensing the difference between two selected portions of each of said at least one set of summed intelligence.
Claim 17
Dependent Claim
34 words
The invention as stated in claim 13, including the further step of: (e) switching said difference so that each portion of said at least one set of summed intelligence is provided in serial outputs.
Claim 18
Dependent Claim
38 words
The invention as stated in claim 14, including the further step of: (f) transforming the serial outputs of step (e) into the time domain thereby providing the inverse transforms of said at least one set of summed intelligence.
Claim 19
Dependent Claim
15 words
The invention as stated in claim 14, wherein step (e) provides a direct Hadamard transform.
Claim 20
Dependent Claim
15 words
The invention as stated in claim 14, wherein step (e) provides a direct cosine transform.
Claim 21
Dependent Claim
15 words
The invention as stated in claim 14, wherein step (e) provides a direct sine transform.
References Cited (Backward Citations)
US3809923A
Cited
US3953745A
Cited
US3983408A
Cited
US3999152A
Cited
US3952188A
Cited
US4011441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |