GB2409941A - Configurable function implementing system and digital to analogue converters - Google Patents

Configurable function implementing system and digital to analogue converters Download PDF

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Publication number
GB2409941A
GB2409941A GB0509235A GB0509235A GB2409941A GB 2409941 A GB2409941 A GB 2409941A GB 0509235 A GB0509235 A GB 0509235A GB 0509235 A GB0509235 A GB 0509235A GB 2409941 A GB2409941 A GB 2409941A
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GB
United Kingdom
Prior art keywords
digital
analogue
analogue converters
implementing system
function implementing
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.)
Granted
Application number
GB0509235A
Other versions
GB0509235D0 (en
GB2409941B (en
Inventor
Calvin Sim
Christofer Toumazou
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.)
Toumaz Technology Ltd
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Toumaz Technology Ltd
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.)
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Publication date
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Publication of GB0509235D0 publication Critical patent/GB0509235D0/en
Publication of GB2409941A publication Critical patent/GB2409941A/en
Application granted granted Critical
Publication of GB2409941B publication Critical patent/GB2409941B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06J—HYBRID COMPUTING ARRANGEMENTS
    • G06J1/00—Hybrid computing arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Evolutionary Computation (AREA)
  • Mathematical Physics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Hardware Design (AREA)
  • Fuzzy Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Analogue/Digital Conversion (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Error Detection And Correction (AREA)

Abstract

Apparatus for converting an M-bit digital signal into an analogue signal. The apparatus comprising means (12,13) for mapping the M-bit digital signal to first and second digital values, so that the ratio of the first to the second digital value is equal to or approximates the value of the M-bit digital signal. First and second digital to analogue converters (14,15) are provided, the first digital to analogue converter (14) having an input for receiving said first digital value and the second digital to analogue converter (15) having an input for receiving said second digital value. Circuit means (16) is coupled to the analogue outputs of the digital to analogue converters (14,15) for dividing one of the analogue outputs by the other, and for providing the result to an output.

Description

GB 2409941 A continuation (72) Inventor(s): (56) cont Calvin Sim PATENT
ABSTRACTS OF JAPAN vol. 007, no. 148 Christofer Toumazou (E-1841, 29 June 1983 (1983-06-291 -& JP 58 060821 A (HIOKI DENKI KKI, 11 April 1983 (1983-04-111 (74) Agent and/or Address for Service: PATENT ABSTRACTS OF JAPAN vol. 005, no. 176 Marks & Clerk (E-0811, 12 November 1981 (1981 -11-121 -& JP 56 102118 4220 Nash Court, A (HITACHI LTDI, 15 August 1981 (1981-08-151 Oxford Business Park South, OXFORD, OX4 2RU, United Kingdom (58) Field of Search by ISA: INT CL7 G06J, H03M Other: EPO-lnternal, PAJ, INPSEC, WPI data
GB0509235A 2002-11-06 2003-11-06 Configurable function implementing system and digital to analogue converters Expired - Fee Related GB2409941B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0225846A GB2395383B (en) 2002-11-06 2002-11-06 Vector dot product multipliers and digital to analogue converters
PCT/GB2003/004828 WO2004042931A2 (en) 2002-11-06 2003-11-06 Configurable function implementing system and digital to analogue converters

Publications (3)

Publication Number Publication Date
GB0509235D0 GB0509235D0 (en) 2005-06-15
GB2409941A true GB2409941A (en) 2005-07-13
GB2409941B GB2409941B (en) 2006-04-05

Family

ID=9947289

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0225846A Expired - Fee Related GB2395383B (en) 2002-11-06 2002-11-06 Vector dot product multipliers and digital to analogue converters
GB0509235A Expired - Fee Related GB2409941B (en) 2002-11-06 2003-11-06 Configurable function implementing system and digital to analogue converters

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0225846A Expired - Fee Related GB2395383B (en) 2002-11-06 2002-11-06 Vector dot product multipliers and digital to analogue converters

Country Status (6)

Country Link
JP (1) JP2006505984A (en)
CN (1) CN1736029A (en)
AU (1) AU2003285493A1 (en)
DE (1) DE10393686T5 (en)
GB (2) GB2395383B (en)
WO (1) WO2004042931A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116846399B (en) * 2023-05-31 2023-12-01 北京国科环宇科技股份有限公司 Digital-to-analog converter, electronic device, and digital-to-analog conversion method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102118A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Digital to analog converting circuit
JPS5860821A (en) * 1981-10-06 1983-04-11 Hioki Denki Kk Digital to analog converting and output equipment
EP0439623A1 (en) * 1989-08-21 1991-08-07 Fujitsu Limited Digital-to-analog converter
US6157334A (en) * 1997-06-02 2000-12-05 Seiko Epson Corporation Digital-analog converter, circuit board, electronic device and liquid crystal display device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335356A (en) * 1980-01-21 1982-06-15 Tektronix, Inc. Programmable two-quadrant transconductance amplifier
GB9123560D0 (en) * 1991-11-06 1992-01-02 Philips Electronic Associated Multiplying digital-to-analogue converter
JP2933112B2 (en) * 1992-11-16 1999-08-09 株式会社高取育英会 Multiplication circuit
US5703587A (en) * 1996-04-19 1997-12-30 Lsi Logic Corporation Digital-to-analog converter having overlapping segments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102118A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Digital to analog converting circuit
JPS5860821A (en) * 1981-10-06 1983-04-11 Hioki Denki Kk Digital to analog converting and output equipment
EP0439623A1 (en) * 1989-08-21 1991-08-07 Fujitsu Limited Digital-to-analog converter
US6157334A (en) * 1997-06-02 2000-12-05 Seiko Epson Corporation Digital-analog converter, circuit board, electronic device and liquid crystal display device

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 176 (E-081), 12 November 1981 (1981-11-12) & JP 56102118 A (HITACHI LTD), 15 August 1981 (1981-08-15) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 148 (E-184), 29 June 1983 (1983-06-29) & JP 58060821 A (HIOKI DENKI KK), 11 April 1983 (1983-04-11) *
SIM C ET AL: "Power efficient scalable precision rational digital to analogue converters" PROCEEDINGS OF THE 2003 IEEE INT SYMP ON CIRCUITS AND SYSTEMS (CAT. NO.03CH37430), BANGKOK, THAILAND, 25-28 MAY 2003, pages I-905-8 vol.1, XP002275781 2003, Piscataway, NJ, IEEE, USA ISBN: 0-7803-7761-3 *
VELIXON J M: "TRANSMISSION COEFFICIENT CORRECTION FOR DACS" IEEE DESIGN & TEST OF COMPUTERS, IEEE COMPUTERS SOCIETY. LOS ALAMITOS, US, vol. 13, no. 4, 21 December 1996 (1996-12-21), pages 34-39, XP000682966 ISSN: 0740-7475 *

Also Published As

Publication number Publication date
GB0225846D0 (en) 2002-12-11
GB0509235D0 (en) 2005-06-15
WO2004042931A3 (en) 2004-09-23
AU2003285493A1 (en) 2004-06-07
DE10393686T5 (en) 2005-10-06
CN1736029A (en) 2006-02-15
GB2409941B (en) 2006-04-05
GB2395383A (en) 2004-05-19
WO2004042931A2 (en) 2004-05-21
JP2006505984A (en) 2006-02-16
GB2395383B (en) 2004-12-22
AU2003285493A8 (en) 2004-06-07

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20081106