US3701143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walsh function generator
Assignee: United States Department of the Navy
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Filing: 1970-08-24
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Granted: 1972-10-24
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Expires: 1990-08-24
Abstract
Abstract A clock driven generator which produces desired Walsh functions in response to binary number input command signals. The input command signals are connected to be operated on by various circuitry and thereby produce output signals which are individually a particular bit of a desired Walsh function. The Walsh function is obtained by scanning the output signals.
Inventors
- 👤 George G Nacht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:59
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4906; H04L25/4908
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
111 words
A Walsh function generator comprising: combining circuit means including a plurality of Material Equivalence circuits for receiving N input command signals of binary type and for producing 2N output signals according to predetermined logic; and scanning means having a single output terminus to sequentially sample said 2N output signals, said sequential signals forming the Walsh function associated with the particular input-signal combination being received by said combining circuit means, one of said output signals being a constant value, N other of said output signals being the inverse of said N input signals, and the remaining 2N-(N+1) of said 2N output signals being obtained from circuits which contain said Material Equivalence circuits.
Claim 2
Dependent Claim
111 words
A Walsh function generator comprising: combining circuit means including a plurality of Material Equivalence circuits for receiving N input command signals of binary type and for producing 2N output signals according to predetermined logic; and scanning means having a single output terminus to sequentially sample said 2N output signals, said sequential signals forming the Walsh function associated with the particular input-signal combination being received by said combining circuit means, one of said output signals being a constant value, N other of said output signals being the inverse of said N input signals, and the remaining 2N-(N+1) of said 2N output signals being obtained from circuits which contain said Material Equivalence circuits.
Claim 3
Dependent Claim
24 words
The Walsh function generator of claim 1, wherein each Material Equivalence circuit is connected to receive at least one of said N input signals.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |