Disc playing apparatus capable of both long time reproduction and high speed access

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United States of America Patent

PATENT NO 5243587
SERIAL NO

07916703

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Abstract

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A disc playing apparatus which can access to a desired track at a high speed without losing an advantage of a large recording capacity of a non-CAV disc. A disc 1 on which a predetermined information signal is recorded is rotated at a constant rotational speed, the information signal is read out to thereby obtain a read signal, a reproduction clock signal CLK.sub.1 is extracted from the read signal, and the read signal is demodulated to thereby obtain demodulation data. A clock signal CLK.sub.2 of a predetermined frequency is generated, the demodulation data is stored in response to the reproduction clock signal CLK.sub.1, the stored demodulation data is sequentially read out in accordance with the storing order in response to the clock signal CLK.sub.2, and when it is detected that a residual data amount exceeds a predetermined amount, a read stop signal is generated, thereby stopping the reading operation of the information signal in response to the read stop signal.

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Patent Owner(s)

Patent OwnerAddress
PIONEER DISPLAY PRODUCTS CORPORATIONNO 15-1 NISHINOYA WASHIZU FUKUROI-SHI SHIZUOKA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Itoh, Naoto Koufu, JP 17 168
Nagai, Yoshihisa Koufu, JP 7 219
Ohta, Minemasa Koufu, JP 12 193

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