Erasable compact optical disc system.
نویسندگان
چکیده
منابع مشابه
Modelling of the Optical Detector System in a Compact Disc Player Servo System
The cross-couplings between focus and radial tracking servos in compact disc players are important, but the optical cross couplings are not well described in the literature. In this paper an optical model of a compact disc player based on the three beam single foucault detector principle is found. The general principle of the three beam focus and radial detector system is first described, follo...
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In this artide we shall deal in more detail with the various faclors that had to be weighed one against the other in the design of the Compact Disc syslem. In particular we shall discuss the EFM modulation system ('EighHo-Fourteen Modulation'), which helps to produce the desired high information density on the disco lical to Bi from the disc and reconverts it to the orchestral sound. The system...
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We present a compact design for a unitary photo detector and single-path combination optical pickup head (OPH) which can be used for Blu-ray Disc, digital versatile disc and compact disc systems. The number of components in the OPH design can be reduced by focusing three discrete wavelength laser beams on the photo detector. The three laser diode chips and a photo detector can be encapsulated w...
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The principles of optical fiber communication and optical data storage have evolved over the past decade into industry standards for transmission, distribution, storage, and archival of digital audio, multimedia, and computer data. The fundamentals of these sophisticated systems are traditionally taught in the lecture hall, and laboratory exposure to the hardware is at the device rather than th...
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The modulation method employed in the Compact Disc (CD) digital audio system codeveloped by Philips N.V. (Eindhoven, The Netherlands) and Sony Corporation (Tokyo, Japan) is described. This method, called eight-to-fourteen (EFM), is an 8 (data bit) ---> 14 (channel bit) conversion block code with a space of 3 channel bits for every converted 14 channel bits which is used to connect the blocks. T...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1986
ISSN: 0386-6831,1884-9652
DOI: 10.3169/itej1978.40.514