FR2603435A1 - Procede et appareil de production de signal pcm differentiel - Google Patents
Procede et appareil de production de signal pcm differentielInfo
- Publication number
- FR2603435A1 FR2603435A1 FR8711964A FR8711964A FR2603435A1 FR 2603435 A1 FR2603435 A1 FR 2603435A1 FR 8711964 A FR8711964 A FR 8711964A FR 8711964 A FR8711964 A FR 8711964A FR 2603435 A1 FR2603435 A1 FR 2603435A1
- Authority
- FR
- France
- Prior art keywords
- differential pcm
- pcm signal
- producing differential
- pcm
- pcm data
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
Abstract
SELON L'INVENTION, UNE DONNEE PCM D'ENTREE DE FREQUENCE D'ECHANTILLONNAGE F SUBIT UN SUR-ECHANTILLONNAGE 1 AFIN QU'IL SOIT PRODUIT UNE DONNEE PCM DE FREQUENCE D'ECHANTILLONNAGE N.F (OU N EST UN ENTIER POSITIF SUPERIEUR A 1), PUIS CETTE DONNEE PCM EST TRAITEE 2 AFIN QU'IL SOIT PRODUIT UNE DONNEE PCM DIFFERENTIELLE, SI BIEN QU'ON PEUT EFFECTUER, SUR UNE LARGE BANDE DE FREQUENCE, UN EFFET DE COMPRESSION DE BITS POUR LES DONNEES PCM DIFFERENTIELLES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61199405A JPS6354827A (ja) | 1986-08-26 | 1986-08-26 | 差分pcm信号形成回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2603435A1 true FR2603435A1 (fr) | 1988-03-04 |
Family
ID=16407246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8711964A Pending FR2603435A1 (fr) | 1986-08-26 | 1987-08-26 | Procede et appareil de production de signal pcm differentiel |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS6354827A (fr) |
KR (1) | KR880003486A (fr) |
DE (1) | DE3728514A1 (fr) |
FR (1) | FR2603435A1 (fr) |
GB (1) | GB2194695A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02180432A (ja) * | 1988-12-29 | 1990-07-13 | Nec Home Electron Ltd | ディジタル/アナログ変換装置 |
GB2304243B (en) * | 1995-08-04 | 2000-03-15 | Nokia Mobile Phones Ltd | Analogue to digital and digital to analogue converters |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2130829A (en) * | 1982-11-22 | 1984-06-06 | Mobil Oil Corp | A seismic exploration system and an analog-to-digital converter for use therein |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7307237A (fr) * | 1973-05-24 | 1974-11-26 | ||
CA1068822A (fr) * | 1974-06-24 | 1979-12-25 | Ching-Long Song | Convertisseur numerique-analogique pour systeme de communication |
US3937897A (en) * | 1974-07-25 | 1976-02-10 | North Electric Company | Signal coding for telephone communication system |
-
1986
- 1986-08-26 JP JP61199405A patent/JPS6354827A/ja active Pending
-
1987
- 1987-08-26 DE DE19873728514 patent/DE3728514A1/de not_active Withdrawn
- 1987-08-26 FR FR8711964A patent/FR2603435A1/fr active Pending
- 1987-08-26 KR KR870009303A patent/KR880003486A/ko not_active Application Discontinuation
- 1987-08-26 GB GB08720119A patent/GB2194695A/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2130829A (en) * | 1982-11-22 | 1984-06-06 | Mobil Oil Corp | A seismic exploration system and an analog-to-digital converter for use therein |
Non-Patent Citations (1)
Title |
---|
IEEE JOURNAL OF SOLID-STATE CIRCUITS. vol. SC-21, no. 1, février 1986, NEW YORK US pages 175 - 181; D. VOGEL et al.: "A digital signal-processing codec filter for PCM applications" * |
Also Published As
Publication number | Publication date |
---|---|
JPS6354827A (ja) | 1988-03-09 |
GB8720119D0 (en) | 1987-09-30 |
KR880003486A (ko) | 1988-05-17 |
GB2194695A (en) | 1988-03-09 |
DE3728514A1 (de) | 1988-03-03 |
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