GB1387015A - Digital filters - Google Patents

Digital filters

Info

Publication number
GB1387015A
GB1387015A GB926972A GB926972A GB1387015A GB 1387015 A GB1387015 A GB 1387015A GB 926972 A GB926972 A GB 926972A GB 926972 A GB926972 A GB 926972A GB 1387015 A GB1387015 A GB 1387015A
Authority
GB
United Kingdom
Prior art keywords
input
adder
shift register
circuit
sign bit
Prior art date
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
GB926972A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1387015A publication Critical patent/GB1387015A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/52—Multiplying; Dividing
    • G06F7/523—Multiplying only
    • G06F7/527—Multiplying only in serial-parallel fashion, i.e. one operand being entered serially and the other in parallel
    • G06F7/5277—Multiplying only in serial-parallel fashion, i.e. one operand being entered serially and the other in parallel with column wise addition of partial products
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0461—Quantisation; Rounding; Truncation; Overflow oscillations or limit cycles eliminating measures
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/288—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable using additional transistors in the input circuit
    • H03K3/2885—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable using additional transistors in the input circuit the input circuit having a differential configuration
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/38—Indexing scheme relating to groups G06F7/38 - G06F7/575
    • G06F2207/48—Indexing scheme relating to groups G06F7/48 - G06F7/575
    • G06F2207/4802—Special implementations
    • G06F2207/4806—Cascode or current mode logic
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/38—Indexing scheme relating to groups G06F7/38 - G06F7/575
    • G06F2207/48—Indexing scheme relating to groups G06F7/48 - G06F7/575
    • G06F2207/4802—Special implementations
    • G06F2207/4818—Threshold devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/499—Denomination or exception handling, e.g. rounding or overflow
    • G06F7/49942—Significance control
    • G06F7/49947—Rounding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Complex Calculations (AREA)
GB926972A 1971-03-04 1972-02-29 Digital filters Expired GB1387015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12082971A 1971-03-04 1971-03-04

Publications (1)

Publication Number Publication Date
GB1387015A true GB1387015A (en) 1975-03-12

Family

ID=22392791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB926972A Expired GB1387015A (en) 1971-03-04 1972-02-29 Digital filters

Country Status (7)

Country Link
US (1) US3725687A (enExample)
BE (1) BE780198A (enExample)
CA (1) CA938351A (enExample)
FR (1) FR2127994A5 (enExample)
GB (1) GB1387015A (enExample)
NL (1) NL7202852A (enExample)
SE (1) SE379902B (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL169535C (nl) * 1974-11-14 1982-07-16 Philips Nv Digitale signaalbewerkingsinrichting met gestuurde kwantisering.
US3982112A (en) * 1974-12-23 1976-09-21 General Electric Company Recursive numerical processor
JPS54554A (en) * 1977-06-03 1979-01-05 Hitachi Ltd Digital filter
US4215415A (en) * 1977-09-19 1980-07-29 Nippon Electric Company, Ltd. Recursive digital filter comprising a circuit responsive to first sum and feedback sign bits and second sum sign and integer bits for detecting overflow in the second sum
US4319325A (en) * 1978-07-24 1982-03-09 Intel Corporation Digital processor for processing analog signals
JPS5571316A (en) * 1978-11-24 1980-05-29 Hitachi Ltd Recursive digital filter
US4430721A (en) 1981-08-06 1984-02-07 Rca Corporation Arithmetic circuits for digital filters
US4577282A (en) * 1982-02-22 1986-03-18 Texas Instruments Incorporated Microcomputer system for digital signal processing
US4507725A (en) * 1982-07-01 1985-03-26 Rca Corporation Digital filter overflow sensor
US4722066A (en) * 1985-07-30 1988-01-26 Rca Corporation Digital signal overflow correction apparatus
US5006851A (en) * 1988-07-18 1991-04-09 Matsushita Electric Industrial Co., Ltd. Analog-to-digital converting system
JPH0760990B2 (ja) * 1989-02-23 1995-06-28 エルエスアイ・ロジック株式会社 ディジタルフィルタ
JPH07109976B2 (ja) * 1989-02-23 1995-11-22 エルエスアイ・ロジック株式会社 ディジタルフィルタを用いた演算装置
US7110482B2 (en) * 2000-12-29 2006-09-19 Lockheed Martin Corporation Method and apparatus for tracking invalid signals through a digital system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521041A (en) * 1967-07-19 1970-07-21 Ibm Digital filters
US3619586A (en) * 1968-11-25 1971-11-09 Research Corp Universal digital filter for linear discrete systems
US3609568A (en) * 1970-06-08 1971-09-28 Bell Telephone Labor Inc Stable digital filter apparatus

Also Published As

Publication number Publication date
FR2127994A5 (enExample) 1972-10-13
BE780198A (fr) 1972-07-03
NL7202852A (enExample) 1972-09-06
DE2210011A1 (de) 1972-11-09
US3725687A (en) 1973-04-03
SE379902B (enExample) 1975-10-20
DE2210011B2 (de) 1976-11-04
CA938351A (en) 1973-12-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee