FR2394209A1 - Lecteur de code de gray ou de code binaire reflechi - Google Patents
Lecteur de code de gray ou de code binaire reflechiInfo
- Publication number
- FR2394209A1 FR2394209A1 FR787816997A FR7816997A FR2394209A1 FR 2394209 A1 FR2394209 A1 FR 2394209A1 FR 787816997 A FR787816997 A FR 787816997A FR 7816997 A FR7816997 A FR 7816997A FR 2394209 A1 FR2394209 A1 FR 2394209A1
- Authority
- FR
- France
- Prior art keywords
- producing
- signal
- reader
- warning
- decoder
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
- G01G23/38—Recording and/or coding devices specially adapted for weighing apparatus
- G01G23/42—Recording and/or coding devices specially adapted for weighing apparatus electrically operated
- G01G23/44—Coding devices therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/22—Analogue/digital converters pattern-reading type
- H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
- H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
- H03M1/285—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding of the unit Hamming distance type, e.g. Gray code
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Error Detection And Correction (AREA)
- Detection And Correction Of Errors (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
Lecteur qui comprend des moyens de lecture des codes de Gray; un décodeur pour le signal de sortie de ces moyens de lecture, des moyens de lecture de chiffres de parité, et des moyens de lecture de chiffres de commande de contrôle de parité, qui produisent un premier signal d'avertissement; et un circuit de contrôle de parité, produisant un second signal d'avertissement lorsque la parité est incorrecte. Ce lecteur est caractérisé en ce qu'il comprend une mémoire pour la sortie du décodeur; un soustracteur produisant une différence entre le contenu de la mémoire et la sortie du décodeur, un comparateur pour comparer cette différence à une valeur donnée et pour produire un troisième signal d'avertissement; des moyens de commande de mémoire interrompant l'entrée de cette dernière en réponse à l'un des premier et second signaux d'avertissement ; des premiers moyens indicateurs d'erreur, produisant un signal en réponse au second signal d'avertissement; et des seconds moyens indicateurs d'erreur produisant un signal en réponse aux premier et troisième signaux d'avertissement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6766877A JPS542150A (en) | 1977-06-07 | 1977-06-07 | Gray cord reading device |
JP6766777A JPS5947245B2 (ja) | 1977-06-07 | 1977-06-07 | グレイコ−ドの読取装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2394209A1 true FR2394209A1 (fr) | 1979-01-05 |
Family
ID=26408879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR787816997A Pending FR2394209A1 (fr) | 1977-06-07 | 1978-06-07 | Lecteur de code de gray ou de code binaire reflechi |
Country Status (3)
Country | Link |
---|---|
US (1) | US4173752A (fr) |
DE (1) | DE2825038C3 (fr) |
FR (1) | FR2394209A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276644A (en) * | 1978-03-28 | 1981-06-30 | General Electric Company | Tester and method for checking meter encoders in automatic meter reading systems |
US4312071A (en) * | 1979-12-03 | 1982-01-19 | Safe Flight Instrument Corporation | Digital code error detection and alerting system |
US4362980A (en) * | 1980-09-03 | 1982-12-07 | Exxon Research And Engineering Co. | Position error recovery and motor control system |
US4383317A (en) * | 1980-10-30 | 1983-05-10 | Bei Electronics, Inc. | Shaft angle encoder having a circuit for synthesizing a skipped track output signal |
FR2583544B1 (fr) * | 1985-06-14 | 1987-09-04 | Mcb | Dispositif de lecture de code optique, notamment du type entierement integre |
US5665974A (en) * | 1995-11-16 | 1997-09-09 | The Boeing Company | Self-monitoring optical encoder for wavelength division multiplexing optical sensors |
CN114859341B (zh) * | 2021-02-03 | 2023-05-05 | 上海禾赛科技有限公司 | 同步电路、数据处理芯片及雷达 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891143A (en) * | 1972-12-27 | 1975-06-24 | Siemens Ag | Encoding apparatus having an improved code permitting error reading and error detection |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3187325A (en) * | 1962-07-02 | 1965-06-01 | Bell Telephone Labor Inc | Analog-to-digital converter |
US3594735A (en) * | 1968-08-26 | 1971-07-20 | Exact Weight Scale Co The | Data retrieval apparatus |
US3947843A (en) * | 1973-02-05 | 1976-03-30 | Presentey Shelley M | Arrangement for preventing ambiguity in digital displacement measuring apparatus |
US3913095A (en) * | 1973-07-19 | 1975-10-14 | Pitney Bowes Inc | Photodetector compensating circuit for a postage metering system |
JPS5438692B2 (fr) * | 1973-08-07 | 1979-11-22 | ||
US3938083A (en) * | 1974-11-27 | 1976-02-10 | Burroughs Corporation | Parity checking a double-frequency coherent-phase data signal |
US3999064A (en) * | 1975-01-09 | 1976-12-21 | The Brunton Company | Angular displacement measuring apparatus with strobe means |
-
1978
- 1978-03-24 US US05/889,910 patent/US4173752A/en not_active Expired - Lifetime
- 1978-06-07 FR FR787816997A patent/FR2394209A1/fr active Pending
- 1978-06-07 DE DE2825038A patent/DE2825038C3/de not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891143A (en) * | 1972-12-27 | 1975-06-24 | Siemens Ag | Encoding apparatus having an improved code permitting error reading and error detection |
Also Published As
Publication number | Publication date |
---|---|
DE2825038C3 (de) | 1980-05-22 |
DE2825038A1 (de) | 1978-12-14 |
DE2825038B2 (de) | 1979-09-13 |
US4173752A (en) | 1979-11-06 |
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