FR2111503A5 - - Google Patents

Info

Publication number
FR2111503A5
FR2111503A5 FR7137366A FR7137366A FR2111503A5 FR 2111503 A5 FR2111503 A5 FR 2111503A5 FR 7137366 A FR7137366 A FR 7137366A FR 7137366 A FR7137366 A FR 7137366A FR 2111503 A5 FR2111503 A5 FR 2111503A5
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7137366A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales Nederland BV
Original Assignee
Thales Nederland BV
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.)
Filing date
Publication date
Application filed by Thales Nederland BV filed Critical Thales Nederland BV
Application granted granted Critical
Publication of FR2111503A5 publication Critical patent/FR2111503A5/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/035—Reduction of table size
    • G06F1/0353—Reduction of table size by using symmetrical properties of the function, e.g. using most significant bits for quadrant control

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Polymerization Catalysts (AREA)
  • Polymerisation Methods In General (AREA)
  • Complex Calculations (AREA)
  • Error Detection And Correction (AREA)
FR7137366A 1970-10-19 1971-10-18 Expired FR2111503A5 (oth)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7015266.A NL164403C (nl) 1970-10-19 1970-10-19 Digitale sinus/cosinus generator.

Publications (1)

Publication Number Publication Date
FR2111503A5 true FR2111503A5 (oth) 1972-06-02

Family

ID=19811323

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7137366A Expired FR2111503A5 (oth) 1970-10-19 1971-10-18

Country Status (12)

Country Link
US (1) US3735110A (oth)
JP (1) JPS5217704B1 (oth)
AU (1) AU451132B2 (oth)
BE (1) BE773815A (oth)
CA (1) CA943256A (oth)
CH (1) CH535998A (oth)
DE (1) DE2150751C3 (oth)
FR (1) FR2111503A5 (oth)
GB (1) GB1317693A (oth)
IT (1) IT944851B (oth)
NL (1) NL164403C (oth)
SE (1) SE368466C (oth)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024385A (en) * 1974-02-25 1977-05-17 Raytheon Company Second difference function generator
US3898446A (en) * 1974-09-06 1975-08-05 Us Army Quadratic phase memory
US3917935A (en) * 1974-12-23 1975-11-04 United Technologies Corp Reduction of look-up table capacity
JPS588401B2 (ja) * 1976-03-31 1983-02-16 大日精化工業株式会社 光硬化性着色組成物
JPS52152133A (en) * 1976-06-14 1977-12-17 Yokogawa Hokushin Electric Corp High-speed fourier transformation unit
US4077063A (en) * 1976-08-11 1978-02-28 The Singer Company Apparatus for rapidly determining the trigonometric functions of an input angle
JPS5918401B2 (ja) * 1976-08-16 1984-04-27 三井東圧化学株式会社 塩化ビニル（共）重合体の製造方法
JPS5823401B2 (ja) * 1977-08-02 1983-05-14 大日精化工業株式会社 光硬化性着色組成物
JPS57174742A (en) * 1981-04-21 1982-10-27 Mitsubishi Electric Corp Computer
US4636973A (en) * 1982-07-21 1987-01-13 Raytheon Company Vernier addressing apparatus
US4631694A (en) * 1984-04-27 1986-12-23 National Semiconductor Corporation Sine wave synthesizer
AT399236B (de) * 1986-02-03 1995-04-25 Siemens Ag Oesterreich Digitaler sinusgenerator
EP0259514A1 (de) * 1986-09-11 1988-03-16 Deutsche ITT Industries GmbH Digitalschaltung zur gleichzeitigen Erzeugung von digitalen Sinus- und Cosinusfunktionswerten
JPS63186329A (ja) * 1987-01-28 1988-08-01 Nec Corp 三角関数前処理装置
DE3728689A1 (de) * 1987-08-27 1989-03-09 Hengstler Gmbh Schaltung zur erzeugung eines sinus- und/oder cosinuswertes aus einem digitalen code
JPH01143964A (ja) * 1987-11-30 1989-06-06 Nippon Seiki Co Ltd 交叉コイル型計器
US5222036A (en) * 1990-07-19 1993-06-22 Motorola, Inc. Device and method for evaluating trigonometric functions
JPH1032531A (ja) * 1996-07-16 1998-02-03 Nec Corp 位相角度データ・三角関数変換回路と合成ダイバーシテ ィ 受信機
KR100202956B1 (ko) * 1996-12-26 1999-06-15 전주범 디지털 신호 처리 시스템에서의 삼각 합수 룩업 테이블 액세스 방법 및 장치
US6373316B1 (en) * 2000-01-18 2002-04-16 International Business Machines Corporation Digital cosine and sine multiplication circuits

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529138A (en) * 1966-12-30 1970-09-15 Sylvania Electric Prod Digital function synthesizer
US3569684A (en) * 1967-03-23 1971-03-09 North American Rockwell Sine-cosine generator comprised of a diode array
US3596076A (en) * 1968-08-05 1971-07-27 Adams Paul E Converter circuitry
US3624636A (en) * 1970-03-11 1971-11-30 Decca Ltd Digitizers for sine and cosine analogue signals

Also Published As

Publication number Publication date
DE2150751B2 (de) 1977-02-10
NL164403B (nl) 1980-07-15
IT944851B (it) 1973-04-20
AU3472271A (en) 1973-05-03
CH535998A (de) 1973-04-15
GB1317693A (en) 1973-05-23
BE773815A (fr) 1972-01-31
DE2150751C3 (de) 1981-03-26
DE2150751A1 (de) 1972-04-20
SE368466B (oth) 1974-07-01
US3735110A (en) 1973-05-22
NL7015266A (oth) 1972-04-21
JPS5217704B1 (oth) 1977-05-17
CA943256A (en) 1974-03-05
JPS478460A (oth) 1972-05-04
AU451132B2 (en) 1974-07-25
NL164403C (nl) 1980-12-15
SE368466C (sv) 1975-12-08

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Legal Events

Date Code Title Description
ST Notification of lapse