FR2425187A1 - Appareil d'enregistrement et de reproduction d'un signal d'image - Google Patents
Appareil d'enregistrement et de reproduction d'un signal d'imageInfo
- Publication number
- FR2425187A1 FR2425187A1 FR7911047A FR7911047A FR2425187A1 FR 2425187 A1 FR2425187 A1 FR 2425187A1 FR 7911047 A FR7911047 A FR 7911047A FR 7911047 A FR7911047 A FR 7911047A FR 2425187 A1 FR2425187 A1 FR 2425187A1
- Authority
- FR
- France
- Prior art keywords
- linear
- image signal
- recording
- circuit
- reproduction device
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/002—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general without controlling loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
- H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
L'INVENTION CONCERNE UN APPAREIL D'ENREGISTREMENT ET DE REPRODUCTION D'UN SIGNAL D'IMAGE. L'APPAREIL COMPORTE DANS SA SECTION D'ENREGISTREMENT UN CIRCUIT DE PRE-ACCENTUATION LINEAIRE ET UN CIRCUIT DE COMPRESSION LINEAIRE DESTINES A ACCENTUER ET A COMPRIMER LES COMPOSANTES A HAUTE FREQUENCE DE LA COMPOSANTE DE LUMINANCE, ET DANS SA SECTION DE REPRODUCTION, UN CIRCUIT DE DESACCENTUATION LINEAIRE ET UN CIRCUIT D'EXPANSION NON LINEAIRE DONT LES CARACTERISTIQUES SONT COMPLEMENTAIRES DE CELLES DES CIRCUITS DE PRE-ACCENTUATION ET DE COMPRESSION DE LA SECTION D'ENREGISTREMENT. L'INVENTION S'APPLIQUE NOTAMMENT A L'ENREGISTREMENT ET A LA REPRODUCTION DE SIGNAUX DE TELEVISION EN COULEURS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5310878A JPS54145111A (en) | 1978-05-02 | 1978-05-02 | Video signal recorder-reproducer |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2425187A1 true FR2425187A1 (fr) | 1979-11-30 |
FR2425187B1 FR2425187B1 (fr) | 1984-12-21 |
Family
ID=12933588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7911047A Granted FR2425187A1 (fr) | 1978-05-02 | 1979-05-02 | Appareil d'enregistrement et de reproduction d'un signal d'image |
Country Status (9)
Country | Link |
---|---|
US (1) | US4326223A (fr) |
JP (1) | JPS54145111A (fr) |
AT (1) | AT380610B (fr) |
AU (1) | AU534260B2 (fr) |
CA (1) | CA1139433A (fr) |
DE (1) | DE2917733A1 (fr) |
FR (1) | FR2425187A1 (fr) |
GB (1) | GB2022965B (fr) |
NL (1) | NL7903443A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2503509A1 (fr) * | 1981-04-06 | 1982-10-08 | Sony Corp | Circuit de traitement de signaux video |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56119908A (en) * | 1980-02-25 | 1981-09-19 | Hitachi Ltd | Regenerative amplifying circuit |
JPS57154986A (en) * | 1981-03-19 | 1982-09-24 | Matsushita Electric Ind Co Ltd | Magnetic recorder and reproducer |
DE3126804C2 (de) * | 1981-07-07 | 1984-08-09 | Siemens AG, 1000 Berlin und 8000 München | Prüfgerät für Frequenzmessungen an Frequenzmodulatoren |
US4798055A (en) * | 1987-10-28 | 1989-01-17 | Kent-Moore Corporation | Refrigeration system analyzer |
JPH01248812A (ja) * | 1988-03-30 | 1989-10-04 | Toshiba Corp | デジタルクリップ回路 |
JPH02103776A (ja) * | 1988-10-11 | 1990-04-16 | Canon Inc | 信号処理装置 |
US6941516B2 (en) * | 2001-08-06 | 2005-09-06 | Apple Computer, Inc. | Object movie exporter |
US7275377B2 (en) * | 2004-08-11 | 2007-10-02 | Lawrence Kates | Method and apparatus for monitoring refrigerant-cycle systems |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3288930A (en) * | 1964-11-12 | 1966-11-29 | Winston Res Corp | Wide-band signal-translating channel |
GB1068247A (en) * | 1963-10-04 | 1967-05-10 | Compagnje Francaise De Televis | Improvement to video-frequency transmitter circuits |
US3944853A (en) * | 1974-08-12 | 1976-03-16 | Basf Aktiengesellschaft | Video recorder pre-emphasis, de-emphasis circuits |
US3980815A (en) * | 1974-04-04 | 1976-09-14 | Sony Corporation | White level clipping circuit |
FR2363250A1 (fr) * | 1976-08-25 | 1978-03-24 | Sony Corp | Circuit de traitement de signal video |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB874701A (en) * | 1960-04-20 | 1961-08-10 | Standard Telephones Cables Ltd | Improvements in or relating to communication systems employing compandors |
JPS5428981Y2 (fr) * | 1974-06-17 | 1979-09-17 | ||
AT257707B (de) * | 1966-01-19 | 1967-10-25 | Philips Nv | Einrichtung zur Aufzeichnung und Wiedergabe von Videoinformationen |
DE1591557A1 (de) * | 1967-09-28 | 1970-10-08 | Siemens Ag | Nachrichtenuebertragungssystem |
JPS56698Y2 (fr) * | 1976-01-09 | 1981-01-09 | ||
JPS52107816A (en) * | 1976-03-05 | 1977-09-09 | Nakamichi Kenkyusho | Circuit for reproducing tape recorder |
AT346099B (de) * | 1976-08-05 | 1978-10-25 | Philips Nv | Wiedergabegeraet |
US4200889A (en) * | 1976-12-27 | 1980-04-29 | Basf Aktiengesellschaft | Complementary pre-emphasis and de-emphasis circuits for a video signal transfer channel |
JPS5412714A (en) * | 1977-06-29 | 1979-01-30 | Matsushita Electric Ind Co Ltd | Recorder-reproducer |
-
1978
- 1978-05-02 JP JP5310878A patent/JPS54145111A/ja active Pending
-
1979
- 1979-04-26 CA CA000326418A patent/CA1139433A/fr not_active Expired
- 1979-04-30 US US06/034,749 patent/US4326223A/en not_active Expired - Lifetime
- 1979-05-01 AU AU46572/79A patent/AU534260B2/en not_active Ceased
- 1979-05-01 GB GB7915163A patent/GB2022965B/en not_active Expired
- 1979-05-02 AT AT0328779A patent/AT380610B/de not_active IP Right Cessation
- 1979-05-02 NL NL7903443A patent/NL7903443A/xx not_active Application Discontinuation
- 1979-05-02 DE DE19792917733 patent/DE2917733A1/de active Granted
- 1979-05-02 FR FR7911047A patent/FR2425187A1/fr active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1068247A (en) * | 1963-10-04 | 1967-05-10 | Compagnje Francaise De Televis | Improvement to video-frequency transmitter circuits |
US3288930A (en) * | 1964-11-12 | 1966-11-29 | Winston Res Corp | Wide-band signal-translating channel |
US3980815A (en) * | 1974-04-04 | 1976-09-14 | Sony Corporation | White level clipping circuit |
US3944853A (en) * | 1974-08-12 | 1976-03-16 | Basf Aktiengesellschaft | Video recorder pre-emphasis, de-emphasis circuits |
FR2363250A1 (fr) * | 1976-08-25 | 1978-03-24 | Sony Corp | Circuit de traitement de signal video |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2503509A1 (fr) * | 1981-04-06 | 1982-10-08 | Sony Corp | Circuit de traitement de signaux video |
Also Published As
Publication number | Publication date |
---|---|
US4326223A (en) | 1982-04-20 |
DE2917733A1 (de) | 1979-11-15 |
CA1139433A (fr) | 1983-01-11 |
JPS54145111A (en) | 1979-11-13 |
GB2022965B (en) | 1982-09-15 |
GB2022965A (en) | 1979-12-19 |
AT380610B (de) | 1986-06-25 |
NL7903443A (nl) | 1979-11-06 |
ATA328779A (de) | 1985-10-15 |
AU534260B2 (en) | 1984-01-12 |
DE2917733C2 (fr) | 1988-01-28 |
FR2425187B1 (fr) | 1984-12-21 |
AU4657279A (en) | 1979-11-29 |
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