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Proceedings Paper

Optical Video Recorder Using Tellurium Sub-Oxide Thin Film Disk
Author(s): Tomio Yoshida; Takeo Ohta; Shunji Ohara
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Paper Abstract

A compact optical still video recorder using Te0x(x÷1) thin film disc and a laser diode as the light source has been developed for video signal recording and playback in a real time mode. The recorder is capable of storing up to 15,000 still pictures on one side of a pregrooved disc, 200 mm in diameter with an average random access time of 0.5 seconds for any desired frame. The reflectivity of TeOx thin film recording layer which is deposited on a pregrooved plastic substrate by evaporating Te and TeO2 compound varies with absorption of irradiated thermal energy of focused laser beam. Carrier to noise ratio greater than 55 dB were achieved at incident power level of 7-9 mW, which was focused by an objective lens having numerical aperture (N.A.) of 0.5. Signal to noise ratio of more than 43 dB and resolution of more than 260 TV lines of playback video signal were obtained.

Paper Details

Date Published: 27 May 1982
PDF: 8 pages
Proc. SPIE 0329, Optical Disk Technology, (27 May 1982); doi: 10.1117/12.933373
Show Author Affiliations
Tomio Yoshida, Electronics Research Laboratory of Matsushita Electric Industrial Co., Ltd. (Japan)
Takeo Ohta, Electronics Research Laboratory of Matsushita Electric Industrial Co., Ltd. (Japan)
Shunji Ohara, Electronics Research Laboratory of Matsushita Electric Industrial Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 0329:
Optical Disk Technology
Robert A. Sprague, Editor(s)

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