SE452229B - Kretsanordning for omvandling mellan pcm-signaler och analoga signaler - Google Patents

Kretsanordning for omvandling mellan pcm-signaler och analoga signaler

Info

Publication number: SE452229B
Authority: SE; Sweden
Prior art keywords: capacitor; reference voltage; electrode; bit; voltage
Prior art date: 1981-04-09

Application number

SE8202086A

Other languages

English (en)

Swedish (sv)

Other versions

SE8202086L (sv

Inventor

M R Dwarakanath

Original Assignee

Western Electric Co

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.)

1981-04-09

Filing date

1982-04-01

Publication date

1987-11-16

1982-04-01 Application filed by Western Electric Co filed Critical Western Electric Co

1982-10-10 Publication of SE8202086L publication Critical patent/SE8202086L/

1987-11-16 Publication of SE452229B publication Critical patent/SE452229B/sv

Links

230000005540 biological transmission Effects 0.000 title 1
239000003990 capacitor Substances 0.000 claims description 81
230000008878 coupling Effects 0.000 claims description 2
238000010168 coupling process Methods 0.000 claims description 2
238000005859 coupling reaction Methods 0.000 claims description 2
238000006243 chemical reaction Methods 0.000 description 5
238000010586 diagram Methods 0.000 description 4
230000004044 response Effects 0.000 description 3
238000012546 transfer Methods 0.000 description 3
238000013461 design Methods 0.000 description 2
230000009977 dual effect Effects 0.000 description 2
238000005516 engineering process Methods 0.000 description 2
238000005070 sampling Methods 0.000 description 2
230000004913 activation Effects 0.000 description 1
238000013459 approach Methods 0.000 description 1
230000000295 complement effect Effects 0.000 description 1
239000002131 composite material Substances 0.000 description 1
238000013329 compounding Methods 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
230000006835 compression Effects 0.000 description 1
238000007906 compression Methods 0.000 description 1
239000004020 conductor Substances 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
230000000977 initiatory effect Effects 0.000 description 1
230000014759 maintenance of location Effects 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
229910044991 metal oxide Inorganic materials 0.000 description 1
150000004706 metal oxides Chemical class 0.000 description 1
238000000034 method Methods 0.000 description 1
230000000717 retained effect Effects 0.000 description 1
239000004065 semiconductor Substances 0.000 description 1
238000003860 storage Methods 0.000 description 1

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/02—Reversible analogue/digital converters

Landscapes

Engineering & Computer Science (AREA)
Theoretical Computer Science (AREA)
Analogue/Digital Conversion (AREA)
Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

SE8202086A 1981-04-09 1982-04-01 Kretsanordning for omvandling mellan pcm-signaler och analoga signaler SE452229B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US06/252,600 US4404544A (en)	1981-04-09	1981-04-09	μ-Law/A-law PCM CODEC

Publications (2)

Publication Number	Publication Date
SE8202086L SE8202086L (sv)	1982-10-10
SE452229B true SE452229B (sv)	1987-11-16

Family

ID=22956708

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8202086A SE452229B (sv)	1981-04-09	1982-04-01	Kretsanordning for omvandling mellan pcm-signaler och analoga signaler

Country Status (8)

Country	Link
US (1)	US4404544A (fr)
JP (1)	JPS57193121A (fr)
CA (1)	CA1197015A (fr)
DE (1)	DE3212806A1 (fr)
FR (1)	FR2503962B1 (fr)
GB (1)	GB2096848B (fr)
NL (1)	NL8201522A (fr)
SE (1)	SE452229B (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4570121A (en) *	1983-06-16	1986-02-11	At&T Bell Laboratories	Video wave codec
US4531113A (en) *	1983-06-27	1985-07-23	Gte Laboratories Incorporated	Capacitor array
CA1250051A (fr) *	1983-11-18	1989-02-14	Brooktree Corporation	Appareil de conversion de donnees numeriques en donnees analogiques
US4641130A (en) *	1985-03-29	1987-02-03	Rca Corporation	Analog-to-digital converter with scaling of input signal
US5021787A (en) *	1987-03-26	1991-06-04	Texas Instruments Incorporated	Digital-analog converter for conversion of law A- encoded digital signals into analog signals
JPH01202925A (ja) *	1988-02-09	1989-08-15	Oki Electric Ind Co Ltd	アナログ／ディジタル―ディジタル／アナログ共用変換器
US5006854A (en) *	1989-02-13	1991-04-09	Silicon Systems, Inc.	Method and apparatus for converting A/D nonlinearities to random noise
US5016012A (en) *	1989-10-04	1991-05-14	At&T Bell Laboratories	Technique for compensating switched capacitor circuits having gain-setting resistors
DE69331170T2 (de) *	1992-03-31	2002-06-20	Texas Instruments Inc., Dallas	Mehrmoden-Analog/Digitalwandler und Verfahren
US5274376A (en) *	1992-04-01	1993-12-28	Texas Instruments Incorporated	Multi-mode digital to analog converter and method
GB9209498D0 (en) *	1992-05-01	1992-06-17	Univ Waterloo	Multi-bit dac with dynamic element matching
DE19513796C1 (de) *	1995-04-11	1996-08-08	Siemens Ag	Analog-Digital-Umsetzer
US5883925A (en) *	1995-11-16	1999-03-16	International Business Machines Corporation	Pulse code modulation compression mechanism
US6268813B1 (en) *	1997-08-29	2001-07-31	Texas Instruments Incorporated	Self-test for charge redistribution analog-to-digital converter
US6215428B1 (en) *	1997-10-14	2001-04-10	Photobit Corporation	Differential non-linearity correction scheme
WO1999037027A1 (fr) *	1998-01-20	1999-07-22	Microchip Technology Incorporated	Circuit d'entrainement pour fonctionnement a basse tension de convertisseur analogique-numerique (a/n) d'un registre d'approximations successives (ras) et procede a cet effet
US6169503B1 (en)	1998-09-23	2001-01-02	Sandisk Corporation	Programmable arrays for data conversions between analog and digital
JP3275966B2 (ja) *	1999-12-02	2002-04-22	日本電気株式会社	ディジタル・アナログ変換器
US7388247B1 (en)	2003-05-28	2008-06-17	The United States Of America As Represented By The Secretary Of The Navy	High precision microelectromechanical capacitor with programmable voltage source
GB2440770A (en) *	2006-08-11	2008-02-13	Sharp Kk	Switched capacitor DAC
GB2440769A (en) *	2006-08-11	2008-02-13	Sharp Kk	A switched capacitor DAC

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3594782A (en) *	1969-03-20	1971-07-20	Bell Telephone Labor Inc	Digital-to-analog conversion circuits
US3626408A (en) *	1969-12-31	1971-12-07	Bell Telephone Labor Inc	Linear charge redistribution pcm coder and decoder
US3651518A (en) *	1970-03-11	1972-03-21	Bell Telephone Labor Inc	Redistribution circuit for analog to digital and digital to analog conversion and multilevel pre-equalizers
US3653030A (en) *	1970-04-03	1972-03-28	Bell Telephone Labor Inc	Switched divider pcm coders and decoders
US3653035A (en) *	1970-04-24	1972-03-28	Bell Telephone Labor Inc	Chord law companding pulse code modulation coders and decoders
US3745555A (en) *	1971-06-01	1973-07-10	Bell Telephone Labor Inc	Nonlinear charge redistribution pcm coder
NL7606930A (nl) *	1976-06-25	1977-12-28	Bell Telephone Mfg	Signaalomzetter welke gebruik maakt van gewogen capaciteiten.
JPS5493954A (en) *	1978-01-06	1979-07-25	Hitachi Ltd	Interpolating pcm decoder

1981
- 1981-04-09 US US06/252,600 patent/US4404544A/en not_active Expired - Lifetime
1982
- 1982-04-01 SE SE8202086A patent/SE452229B/sv not_active IP Right Cessation
- 1982-04-05 GB GB8210050A patent/GB2096848B/en not_active Expired
- 1982-04-05 CA CA000400488A patent/CA1197015A/fr not_active Expired
- 1982-04-06 DE DE19823212806 patent/DE3212806A1/de not_active Withdrawn
- 1982-04-07 FR FR8206060A patent/FR2503962B1/fr not_active Expired
- 1982-04-08 NL NL8201522A patent/NL8201522A/nl not_active Application Discontinuation
- 1982-04-09 JP JP57058394A patent/JPS57193121A/ja active Pending

Also Published As

Publication number	Publication date
CA1197015A (fr)	1985-11-19
FR2503962B1 (fr)	1986-04-04
GB2096848B (en)	1985-05-30
JPS57193121A (en)	1982-11-27
GB2096848A (en)	1982-10-20
US4404544A (en)	1983-09-13
SE8202086L (sv)	1982-10-10
NL8201522A (nl)	1982-11-01
FR2503962A1 (fr)	1982-10-15
DE3212806A1 (de)	1982-11-25

Legal Events

Date

Code

Title

Description

1995-01-31

NUG

Patent has lapsed

Ref document number: 8202086-8

Effective date: 19910117

Format of ref document f/p: F

Publication	Publication Date	Title
SE452229B (sv)	1987-11-16	Kretsanordning for omvandling mellan pcm-signaler och analoga signaler
US4638303A (en)	1987-01-20	Digital-analog converter
US4764750A (en)	1988-08-16	Analog-to-digital converter
US5936566A (en)	1999-08-10	Auto-reference pseudo-flash analog to digital converter
Onodera et al.	1988	A cyclic A/D converter that does not require ratio-matched components
JPS61189022A (ja)	1986-08-22	アナログ‐デジタル変換器のタツプ付抵抗回路網
JPH06152420A (ja)	1994-05-31	アナログ／ディジタル変換器
JPH0456519A (ja)	1992-02-24	Ａ／ｄ変換器
JPH0566774B2 (fr)	1993-09-22
JPS6161578B2 (fr)	1986-12-26
JPH0519848B2 (fr)	1993-03-17
US4381496A (en)	1983-04-26	Analog to digital converter
US4517551A (en)	1985-05-14	Digital to analog converter circuit
US7030801B2 (en)	2006-04-18	Device and method for low non-linearity analog-to-digital converter
US4983974A (en)	1991-01-08	Analog-to-digital conversion by varying both inputs of a comparator utilizing successive approximation
JPS59175216A (ja)	1984-10-04	Ａｄ変換器
EP0952672A2 (fr)	1999-10-27	Circuit de conversion analogique-numérique et dispositif de conversion analogique-numérique utilisant ce circuit
EP0247065B1 (fr)	1990-03-21	Convertisseur analogique/numerique entierement capacitif monotone a 12 bit non ajustes
US20010002819A1 (en)	2001-06-07	Capacitance type digital/analog converter capable of reducing total capacitance
JP2695098B2 (ja)	1997-12-24	直並列型ａ／ｄ変換器
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