GB985223A - Apparatus for producing a signal representative of a light pattern - Google Patents

Apparatus for producing a signal representative of a light pattern

Info

Publication number
GB985223A
GB985223A GB4871/62A GB487162A GB985223A GB 985223 A GB985223 A GB 985223A GB 4871/62 A GB4871/62 A GB 4871/62A GB 487162 A GB487162 A GB 487162A GB 985223 A GB985223 A GB 985223A
Authority
GB
United Kingdom
Prior art keywords
photo
strip
electric
piezo
conductive layer
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
GB4871/62A
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.)
Verizon Laboratories Inc
GTE LLC
Original Assignee
General Telephone and Electronics Corp
General Telephone and Electronics Laboratories Inc
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 General Telephone and Electronics Corp, General Telephone and Electronics Laboratories Inc filed Critical General Telephone and Electronics Corp
Publication of GB985223A publication Critical patent/GB985223A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

985,223. Photo-electric devices. GENERAL TELEPHONE & ELECTRONICS LABORATORIES Inc. Feb. 8, 1962 [Feb. 23, 1961], No. 4871/62. Heading G1A. [Also in Divisions G4 and H1] A photo-electric device comprising a photoconductive layer 16 in contact with a strip of piezo-electric material 10, along which a pressure wave is launched by the sawtooth voltage source 30, is used to read out in sequence (in the form of voltage pulses developed across the resistor 28) the illuminated record holes 60, 62, 64, 66 in a punched card 32. A non-linear resistive strip may be placed between the piezo-electric strip 10 and its conductive backing 18. The photo-conductive layer 16 is covered by a transparent conducting sheet 24. A beam of light is directed upon the card 32 which is placed over this conducting sheet 24 and a voltage pulse (Fig. 3 not shown) is produced in the resistor 28 when the pressure wave travelling down the piezo-electric strip 10 is coincident with an illuminated part of the photo-conductive layer 16. The strip 10 is terminated in wave absorbers 20, 22. The piezo-electric strip 10 is polarised lead titanate-lead zirconate, the photo-conductive layer is activated cadmium sulphide and the non-linear resistive material is non photo-conductive cadmium sulphide powder embedded in an epoxy resin. Specifications 971,459 and 985,222 are referred to.
GB4871/62A 1961-02-23 1962-02-08 Apparatus for producing a signal representative of a light pattern Expired GB985223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91258A US3202824A (en) 1961-02-23 1961-02-23 Pickup device

Publications (1)

Publication Number Publication Date
GB985223A true GB985223A (en) 1965-03-03

Family

ID=22226842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4871/62A Expired GB985223A (en) 1961-02-23 1962-02-08 Apparatus for producing a signal representative of a light pattern

Country Status (2)

Country Link
US (1) US3202824A (en)
GB (1) GB985223A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344278A (en) * 1963-06-14 1967-09-26 Int Rectifier Corp Data readout system utilizing light sensitive junction switch members
US3446974A (en) * 1966-11-07 1969-05-27 Zenith Radio Corp Solid state acoustic signal translating device with light activated electrode interconnections
US3446975A (en) * 1966-11-07 1969-05-27 Zenith Radio Corp Acousto-electric filter utilizing surface wave propagation in which the center frequency is determined by a conductivity pattern resulting from an optical image
US3617632A (en) * 1968-08-05 1971-11-02 Valentin Fedorovich Zolotarev Television image analyzer
US3582658A (en) * 1969-07-15 1971-06-01 Nippon Electric Co Light scanning device utilizing piezoelectric semiconductor material
US3585416A (en) * 1969-10-07 1971-06-15 Howard G Mellen Photopiezoelectric transducer
US3649855A (en) * 1970-03-06 1972-03-14 Univ Leland Stanford Junior Method of and apparatus for optically controlling piezoelectric coupling
US3648081A (en) * 1970-06-30 1972-03-07 Ibm Piezoelectric acoustic surface wave device utilizing an amorphous semiconductive sensing material
US4063281A (en) * 1972-12-29 1977-12-13 Research Corporation Motion detection employing direct Fourier transforms of images
US4040112A (en) * 1972-12-29 1977-08-02 Research Corporation Direct electronic fourier transforms of optical images
US4040091A (en) * 1972-12-29 1977-08-02 Research Corporation Direct electronic fourier transforms of optical images
US3911381A (en) * 1974-09-06 1975-10-07 Trw Inc Tunable acoustic wave propagation device
US4106933A (en) * 1975-06-18 1978-08-15 Minnesota Mining And Manufacturing Company Piezoelectric method and medium for producing electrostatic charge patterns
US4403834A (en) * 1979-07-23 1983-09-13 Kley & Associates Acoustic-wave device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793288A (en) * 1950-02-21 1957-05-21 Charles F Pulvari Apparatus for electrostatic recording and reproducing
US2816236A (en) * 1956-06-19 1957-12-10 Gen Electric Method of and means for detecting stress patterns
US2941110A (en) * 1958-08-15 1960-06-14 Sylvania Electric Prod Delay line
US2951168A (en) * 1958-11-28 1960-08-30 Sylvania Electric Prod Electroluminescent device
US2917669A (en) * 1958-11-28 1959-12-15 Sylvania Electric Prod Electroluminescent device
US2945984A (en) * 1959-07-17 1960-07-19 Sylvania Electric Prod Piezoelectric device
US3065378A (en) * 1959-10-19 1962-11-20 American Soc For Technion Isra Visual display and readout systems

Also Published As

Publication number Publication date
US3202824A (en) 1965-08-24

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