BE803237A - Analyse de spectre de signal pour fonction walsh et operateurs hadamard - Google Patents

Analyse de spectre de signal pour fonction walsh et operateurs hadamard

Info

Publication number: BE803237A
Authority: BE; Belgium
Prior art keywords: spectrum analysis; signal spectrum; walsh function; hadamard; operators
Prior art date: 1972-08-21

Application number

BE134254A

Other languages

English (en)

French (fr)

Inventor

A J Radcliffe

Original Assignee

Burroughs Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1972-08-21

Filing date

1973-08-06

Publication date

1973-12-03

1973-08-06 Application filed by Burroughs Corp filed Critical Burroughs Corp

1973-12-03 Publication of BE803237A publication Critical patent/BE803237A/xx

Classifications

- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
- G06F17/145—Square transforms, e.g. Hadamard, Walsh, Haar, Hough, Slant transforms
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/42—Global feature extraction by analysis of the whole pattern, e.g. using frequency domain transformations or autocorrelation
- G06V10/431—Frequency domain transformation; Autocorrelation
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
- G06V30/1423—Image acquisition using hand-held instruments; Constructional details of the instruments the instrument generating sequences of position coordinates corresponding to handwriting
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
- G07C9/35—Individual registration on entry or exit not involving the use of a pass in combination with an identity check by means of a handwritten signature

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Theoretical Computer Science (AREA)
Mathematical Physics (AREA)
Pure & Applied Mathematics (AREA)
Data Mining & Analysis (AREA)
Mathematical Analysis (AREA)
Mathematical Optimization (AREA)
Multimedia (AREA)
Computer Vision & Pattern Recognition (AREA)
Computational Mathematics (AREA)
Algebra (AREA)
Databases & Information Systems (AREA)
Software Systems (AREA)
General Engineering & Computer Science (AREA)
Collating Specific Patterns (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Complex Calculations (AREA)
Image Analysis (AREA)

BE134254A 1972-08-21 1973-08-06 Analyse de spectre de signal pour fonction walsh et operateurs hadamard BE803237A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US28241872A	1972-08-21	1972-08-21

Publications (1)

Publication Number	Publication Date
BE803237A true BE803237A (fr)	1973-12-03

Family

ID=23081437

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE134254A BE803237A (fr)	1972-08-21	1973-08-06	Analyse de spectre de signal pour fonction walsh et operateurs hadamard

Country Status (10)

Country	Link
JP (1)	JPS4987255A (xx)
BE (1)	BE803237A (xx)
BR (1)	BR7306381D0 (xx)
CA (1)	CA1019837A (xx)
CH (1)	CH576677A5 (xx)
DE (1)	DE2340110C3 (xx)
FR (1)	FR2197277B1 (xx)
GB (1)	GB1400374A (xx)
IT (1)	IT1003118B (xx)
NL (1)	NL7310683A (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS54122244U (xx) *	1978-02-17	1979-08-27
US4308522A (en) *	1979-03-19	1981-12-29	Ncr Corporation	Identity verification apparatus and method
GB2159998B (en) *	1984-06-07	1988-02-17	Rolls Royce	Personal handwriting verification
GB2164186A (en) *	1984-09-04	1986-03-12	Stc Plc	Signature verification
EP0442208B1 (en) *	1990-02-16	1995-08-09	Btg International Limited	A device and method for verifying personal handwriting

1973
- 1973-03-06 GB GB1095473A patent/GB1400374A/en not_active Expired
- 1973-04-02 FR FR7311774A patent/FR2197277B1/fr not_active Expired
- 1973-07-30 CA CA177,568A patent/CA1019837A/en not_active Expired
- 1973-08-02 NL NL7310683A patent/NL7310683A/xx not_active Application Discontinuation
- 1973-08-06 BE BE134254A patent/BE803237A/xx unknown
- 1973-08-06 CH CH1137073A patent/CH576677A5/xx not_active IP Right Cessation
- 1973-08-07 IT IT27624/73A patent/IT1003118B/it active
- 1973-08-08 JP JP48089190A patent/JPS4987255A/ja active Pending
- 1973-08-08 DE DE2340110A patent/DE2340110C3/de not_active Expired
- 1973-08-17 BR BR6381/73A patent/BR7306381D0/pt unknown

Also Published As

Publication number	Publication date
FR2197277A1 (xx)	1974-03-22
CH576677A5 (xx)	1976-06-15
DE2340110B2 (de)	1980-06-19
AU5894673A (en)	1975-02-06
JPS4987255A (xx)	1974-08-21
DE2340110C3 (de)	1981-04-09
CA1019837A (en)	1977-10-25
GB1400374A (en)	1975-07-16
IT1003118B (it)	1976-06-10
NL7310683A (xx)	1974-02-25
FR2197277B1 (xx)	1976-09-10
BR7306381D0 (pt)	1974-07-25
DE2340110A1 (de)	1974-03-07

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