Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
  • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
  • G11B7/128—Modulators
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/02—Analogue recording or reproducing
  • G11B20/06—Angle-modulation recording or reproducing
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/22—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing distortions
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
  • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
• • 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
  • H04N5/93—Regeneration of the television signal or of selected parts thereof
  • H04N5/931—Regeneration of the television signal or of selected parts thereof for restoring the level of the reproduced signal
  • H04N5/9315—Regeneration of the television signal or of selected parts thereof for restoring the level of the reproduced signal the level control being frequency dependent

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Multimedia (AREA)
• Optical Recording Or Reproduction (AREA)
• Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=9186744

Family Applications (1)

Country Status (8)

Families Citing this family (5)

Family Cites Families (4)

• 1977
  • 1977-02-15 FR FR7704192A patent/FR2380615A1/fr active Granted
• 1978
  • 1978-02-10 US US05/876,566 patent/US4170022A/en not_active Expired - Lifetime
  • 1978-02-13 IT IT20201/78A patent/IT1092679B/it active
  • 1978-02-13 NL NL7801608A patent/NL7801608A/xx not_active Application Discontinuation
  • 1978-02-13 GB GB5727/78A patent/GB1576604A/en not_active Expired
  • 1978-02-14 CA CA297,113A patent/CA1126862A/en not_active Expired
  • 1978-02-15 JP JP1549178A patent/JPS53100724A/ja active Pending
  • 1978-02-15 DE DE19782806431 patent/DE2806431A1/de not_active Withdrawn

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