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 Title: |
US3618077:
WALSH FUNCTION GENERATOR
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| Country: |
US United States of America
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| Inventor: |
Peterson, Herbert L.; Hillcrest Heights, MD
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| Assignee: |
The United States of America as represented by the Secretary of the Navy
other patents from UNITED STATES OF AMERICA, NAVY (597270) (approx. 13,239)
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| Published / Filed: |
1971-11-02
/ 1970-07-24
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| Application Number: |
US1970000058012
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| IPC Code: |
Advanced:
G06F 1/025;
Core:
more...
IPC-7:
G08C 9/00;
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| U.S. Class: |
Current:
708/410;
375/295;
375/309;
708/270;
Original:
340/348;
178/068;
179/015.BC;
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| Field of Search: |
179/15 BC
178/068
325/038,141
343/203
235/150.53
340/348,351
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| Priority Number: |
| 1970-07-24 |
US1970000058012 |
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| Abstract: |
A clock-driven generator which produces desired Walsh functions in response to binary number input command signals. These binary number input signals are modified to allow forward copying about the axes of symmetry of the Walsh functions as localized in a shift register, the serial output of which is the desired Walsh functions. Forward copying is accomplished by circuitry that includes half adders connected between the modified binary number input signals and the axes of symmetry of the shift registers and is controlled by a clock driven counter acting through AND gating circuitry.
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| Attorney, Agent or Firm: |
Sciascia, R. S. ;
Branning, Arthur L. ;
Murray, James G. ;
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| Primary / Asst. Examiners: |
Griffin, Robert L.; Brodsky, James A.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 2 known family members
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First Claim:
Show all 8 claims |
What is claimed and desired to be secured by letters patent of The United States is:
1. A Walsh function generator comprising:
- input register means for accepting an N-bit binary command signal representative of a desired Walsh function;
- shift register means having at least 2N 2 bits, the first of which is the input to said shift register means and the last of which is the output of said Walsh function generator;
- pulsing means for producing pulses and connected to said first bit of said shift register means for driving said shift register means;
- copying means connected to said input register means and to said 21 /2, 22 /2,...2N /2 bits of said shift register means for producing a series of N signals that are related by a known relationship to said N-bit binary command signal and to signals which are in said 21 /2, 22 /2,...2N /2 bits of said shift register means and
- gating means connected to be driven by said pulsing means for sequentially connecting for predetermined numbers of pulses, said series of N signals to said first bit of shift register means.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 4 U.S. patent(s) that reference this one
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