GB1530443A - Electronic circuit for scanning according to lissajous figures - Google Patents

Electronic circuit for scanning according to lissajous figures

Info

Publication number
GB1530443A
GB1530443A GB3001677A GB3001677A GB1530443A GB 1530443 A GB1530443 A GB 1530443A GB 3001677 A GB3001677 A GB 3001677A GB 3001677 A GB3001677 A GB 3001677A GB 1530443 A GB1530443 A GB 1530443A
Authority
GB
United Kingdom
Prior art keywords
camera
strips
display
phase shifter
july
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
GB3001677A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB1530443A publication Critical patent/GB1530443A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/042—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
    • 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
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines

Abstract

1530443 Television systems PHILIPS GLOEILAMPENFABRIEKEN NV 18 July 1977 [21 July 1976] 30016/77 Heading H4F A circuit for scanning an image with a scan pattern formed from Lissajous figures in a camera 14 employing oscillating strips to provide the scan, e.g. an endoscope camera as described in Specification 1,410,903, includes a generator 1 providing an electrical signal whose frequency is controlled by a temperature sensor 2 located by the camera to compensate for temperature-dependent changes of the resonant frequencies of the strips. The signal is applied to two paths, each comprising a frequency divider 4, 5, a low pass filter 6, 7 and a phase shifter 8, 9. The phase shifter outputs are added 19 and passed to a coil 21 in the camera to oscillate the strips. The video signal from the camera is applied to a display 13. The outputs of the filters 6, 7 control the deflection of the display. The phase shifters 8, 9 compensate for phase shifts in the circuit. A further phase shifter 11 adjusts the relationship of the deflection signals applied to the display.
GB3001677A 1976-07-21 1977-07-18 Electronic circuit for scanning according to lissajous figures Expired GB1530443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7622240A FR2359556A1 (en) 1976-07-21 1976-07-21 SWEEPING CIRCUIT FOLLOWING FIGURES OF LISSAJOUS

Publications (1)

Publication Number Publication Date
GB1530443A true GB1530443A (en) 1978-11-01

Family

ID=9175969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3001677A Expired GB1530443A (en) 1976-07-21 1977-07-18 Electronic circuit for scanning according to lissajous figures

Country Status (4)

Country Link
JP (1) JPS605299B2 (en)
DE (1) DE2730907A1 (en)
FR (1) FR2359556A1 (en)
GB (1) GB1530443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253978A (en) * 1990-12-15 1992-09-23 Beverley Hugh Pardoe Raster scan system without flyback
CN101924519A (en) * 2010-03-26 2010-12-22 常州工学院 Lissajous graphic signal generator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3310875A1 (en) * 1983-03-25 1984-09-27 Robert Bosch Gmbh, 7000 Stuttgart BEAM DEFLECTION SYSTEM

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253978A (en) * 1990-12-15 1992-09-23 Beverley Hugh Pardoe Raster scan system without flyback
GB2253978B (en) * 1990-12-15 1995-04-26 Beverley Hugh Pardoe Raster scan system
CN101924519A (en) * 2010-03-26 2010-12-22 常州工学院 Lissajous graphic signal generator

Also Published As

Publication number Publication date
JPS605299B2 (en) 1985-02-09
FR2359556B1 (en) 1982-06-18
DE2730907A1 (en) 1978-01-26
FR2359556A1 (en) 1978-02-17
JPS5314515A (en) 1978-02-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960718