GB1322400A - Circuit design by an automated data processing machine - Google Patents

Circuit design by an automated data processing machine

Info

Publication number
GB1322400A
GB1322400A GB2509370A GB2509370A GB1322400A GB 1322400 A GB1322400 A GB 1322400A GB 2509370 A GB2509370 A GB 2509370A GB 2509370 A GB2509370 A GB 2509370A GB 1322400 A GB1322400 A GB 1322400A
Authority
GB
United Kingdom
Prior art keywords
function
data processing
circuit
circuit element
processing machine
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
GB2509370A
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments 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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of GB1322400A publication Critical patent/GB1322400A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/30—Circuit design
    • G06F30/36—Circuit design at the analogue level
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C19/00—Producing optical time signals at prefixed times by electric means
    • G04C19/04—Producing optical time signals at prefixed times by electric means by indicating members moved electrically, e.g. flap, band

Abstract

1322400 Data processing system TEXAS INSTRUMENTS Inc 26 May 1970 [11 June 1969] 25093/70 Heading G4A Starting with a known circuit having initial circuit element values, a function, depending on the sum, over a range of frequencies, of a power function of the difference between a specified performance characteristic and a synthesized performance characteristic, is evaluated, by a data processing machine which then modifies at least one of the circuit element values to improve the value of the function and allows the production of a representation of a modified circuit having an improved operating characteristic from which an actual circuit can be assembled, e.g. using a photomask. Derivatives of the function with respect to the circuit element values may also be generated, modification of circuit element value(s) depending on these derivatives as well as on the function itself. A list of possible functions is given in Table I in the specification.
GB2509370A 1969-06-11 1970-05-26 Circuit design by an automated data processing machine Expired GB1322400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83389269A 1969-06-11 1969-06-11

Publications (1)

Publication Number Publication Date
GB1322400A true GB1322400A (en) 1973-07-04

Family

ID=25265545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2509370A Expired GB1322400A (en) 1969-06-11 1970-05-26 Circuit design by an automated data processing machine

Country Status (3)

Country Link
US (1) US3622762A (en)
CA (1) CA924017A (en)
GB (1) GB1322400A (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447881A (en) * 1980-05-29 1984-05-08 Texas Instruments Incorporated Data processing system integrated circuit having modular memory add-on capacity
US4495559A (en) * 1981-11-02 1985-01-22 International Business Machines Corporation Optimization of an organization of many discrete elements
US4613940A (en) * 1982-11-09 1986-09-23 International Microelectronic Products Method and structure for use in designing and building electronic systems in integrated circuits
US4580228A (en) * 1983-06-06 1986-04-01 The United States Of America As Represented By The Secretary Of The Army Automated design program for LSI and VLSI circuits
US4628471A (en) * 1984-02-02 1986-12-09 Prime Computer, Inc. Digital system simulation method and apparatus having two signal-level modes of operation
US4635208A (en) * 1985-01-18 1987-01-06 Hewlett-Packard Company Computer-aided design of systems
US5257201A (en) * 1987-03-20 1993-10-26 International Business Machines Corporation Method to efficiently reduce the number of connections in a circuit
US5047971A (en) * 1987-06-23 1991-09-10 Intergraph Corporation Circuit simulation
US4916627A (en) * 1987-12-02 1990-04-10 International Business Machines Corporation Logic path length reduction using boolean minimization
US4989132A (en) * 1988-10-24 1991-01-29 Eastman Kodak Company Object-oriented, logic, and database programming tool with garbage collection
JPH02189477A (en) * 1989-01-19 1990-07-25 Mitsubishi Electric Corp Preparation of measurement specification for electronic circuit
US5282148A (en) * 1989-05-23 1994-01-25 Vlsi Technology, Inc. Method and apparatus for the design and fabrication of integrated circuits employing logic decomposition algorithms for the timing optimization of multilevel logic
US5113352A (en) * 1989-06-20 1992-05-12 Digital Equipment Corporation Integrating the logical and physical design of electronically linked objects
DE69032640D1 (en) * 1989-09-05 1998-10-15 Lsi Logic Corp Logic compiler for designing circuit models
US5497337A (en) * 1994-10-21 1996-03-05 International Business Machines Corporation Method for designing high-Q inductors in silicon technology without expensive metalization
US6301693B1 (en) * 1998-12-16 2001-10-09 Synopsys, Inc. Non-linear optimization system and method for wire length and delay optimization for an automatic electric circuit placer
US6282693B1 (en) * 1998-12-16 2001-08-28 Synopsys, Inc. Non-linear optimization system and method for wire length and density within an automatic electronic circuit placer
US7131097B1 (en) * 2002-09-24 2006-10-31 Altera Corporation Logic generation for multiple memory functions
US7260562B2 (en) * 2003-06-30 2007-08-21 Intel Corporation Solutions for constraint satisfaction problems requiring multiple constraints
US7254802B2 (en) * 2004-05-27 2007-08-07 Verisilicon Holdings, Co. Ltd. Standard cell library having cell drive strengths selected according to delay
US20050278659A1 (en) * 2004-05-27 2005-12-15 Xiaonan Zhang Cell library providing transistor size information for automatic circuit design
US7426710B2 (en) * 2004-05-27 2008-09-16 Verisilicon Holdings, Co. Ltd. Standard cell library having cell drive strengths selected according to delay
US7114134B2 (en) * 2004-05-27 2006-09-26 Veri Silicon Holdings, Co. Ltd Automatic circuit design method with a cell library providing transistor size information
US8347261B2 (en) * 2009-09-10 2013-01-01 Cadence Design Systems, Inc. Method and system for implementing graphically editable parameterized cells

Also Published As

Publication number Publication date
CA924017A (en) 1973-04-03
US3622762A (en) 1971-11-23

Similar Documents

Publication Publication Date Title
GB1322400A (en) Circuit design by an automated data processing machine
JPS5294995A (en) Numerical control system
JPS51131238A (en) Electronic register
JPS5218363A (en) Circuitry for clock
JPS5358731A (en) Memory address extension method
JPS54154964A (en) Programable counter
JPS5245844A (en) Microprogram input/output control unit
GB847224A (en) Improvements in or relating to electrical decision element circuits
GB1053126A (en)
JPS5420636A (en) Computer
JPS5335436A (en) Data processing unit having address converting functions
JPS5352329A (en) Electronic computer
JPS51117849A (en) Impedance scaler
JPS5295941A (en) Information classification
JPS5383560A (en) Input follow-up type oscillator circuit
USD156208S (en) Design for an interior wall panel
JPS53142844A (en) Information processor
JPS5752676B2 (en)
Sprinkhuizen-Kuyper A fractional integral operator corresponding to negative powers of a second order partial differential operator
JPS5232641A (en) Time space filter for spot-row data processing
JPS5341967A (en) Wave form shaping circuit
JPS52137967A (en) Electronic counter
JPS5339845A (en) Latch circuit
ES315405A1 (en) 9beta, 10alpha-steroids and methods of producing the same
JPS5334455A (en) Counter circuit

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years