GB1100622A - Apparatus for reading electrostatically-stored information - Google Patents

Apparatus for reading electrostatically-stored information

Info

Publication number
GB1100622A
GB1100622A GB1720865A GB1720865A GB1100622A GB 1100622 A GB1100622 A GB 1100622A GB 1720865 A GB1720865 A GB 1720865A GB 1720865 A GB1720865 A GB 1720865A GB 1100622 A GB1100622 A GB 1100622A
Authority
GB
United Kingdom
Prior art keywords
storage device
back plate
charge
charge pattern
stored
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.)
Expired
Application number
GB1720865A
Inventor
Robert Lewis Fullarton Boyd
Alexander Boksenberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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.)
Filing date
Publication date
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB1720865A priority Critical patent/GB1100622A/en
Priority to NL6605459A priority patent/NL6605459A/xx
Priority to FR58589A priority patent/FR1477085A/en
Publication of GB1100622A publication Critical patent/GB1100622A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/08—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by electric charge or by variation of electric resistance or capacitance
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/08—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using electrostatic charge injection; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
    • G11C27/02—Sample-and-hold arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/80—Television signal recording using electrostatic recording

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

1,100,622. Electrostatic playback apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 19 April, 1966 [23 April, 1965], No. 17208/65. Heading G5R. [Also in Divisions H1 and H3] Information stored as an electric charge pattern is read non-destructively by varying in an oscillatory manner the electrical induction associated with the charges. An ultra-violet spectrograph may be stored as a charge pattern on a photo-electric mosaic 4, Fig. 1, on an insulating base 5 provided with a back plate 6, or a charge pattern may be produced on a storage device in a mass spectrograph. In one read-out device, Fig. 1, the storage device is mounted on a suitably contoured surface 2 which is traversed by a carrier 10 carrying a knife-edged reed 13 disposed above the device and vibrated towards and away from its surface at a frequency of 10 kc/s. The output current taken from the back plate 6 or from the reed 13 can be measured by a tuned amplifier and synchronous detector. In another arrangement, Fig. 2 (not shown), the charge storage device (31) is arranged on a piezo-electric element (32) energized to vibrate the storage surface towards and away from an array of parallel conductors (33) connected to a switching array (34) which provides for each conductor in turn to be switched into an output circuit. In a further arrangement, Fig. 3 (not shown), the storage device is arranged in a cathode ray tube and scanned by a modulated monochromatic electron beam. A grid (25) in front of the storage device allows the beam to pass through it and be reflected by the stored charges, thereby inducing a current in the back plate (27) of the storage device. The current is non-linearly proportional to the charge, but the response may be linearized by applying a feed-back voltage to the back plate (27).
GB1720865A 1965-04-23 1965-04-23 Apparatus for reading electrostatically-stored information Expired GB1100622A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1720865A GB1100622A (en) 1965-04-23 1965-04-23 Apparatus for reading electrostatically-stored information
NL6605459A NL6605459A (en) 1965-04-23 1966-04-22
FR58589A FR1477085A (en) 1965-04-23 1966-04-22 Method and device for reproducing information recorded in the form of electric charges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1720865A GB1100622A (en) 1965-04-23 1965-04-23 Apparatus for reading electrostatically-stored information

Publications (1)

Publication Number Publication Date
GB1100622A true GB1100622A (en) 1968-01-24

Family

ID=10091115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1720865A Expired GB1100622A (en) 1965-04-23 1965-04-23 Apparatus for reading electrostatically-stored information

Country Status (2)

Country Link
GB (1) GB1100622A (en)
NL (1) NL6605459A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481498A2 (en) * 1990-10-19 1992-04-22 Canon Kabushiki Kaisha Information recording unit and apparatus and method for information recording/reproduction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481498A2 (en) * 1990-10-19 1992-04-22 Canon Kabushiki Kaisha Information recording unit and apparatus and method for information recording/reproduction
EP0481498A3 (en) * 1990-10-19 1993-06-09 Canon Kabushiki Kaisha Information recording unit and apparatus and method for information recording/reproduction

Also Published As

Publication number Publication date
NL6605459A (en) 1966-10-24

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