The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2002
Filed:
May. 30, 2000
Applicant:
Inventors:
Assignee:
TEAC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 0/502 ;
U.S. Cl.
CPC ...
H05K 0/502 ;
Abstract
A CD-ROM drive ( ) is disclosed which has a safety circuit ( ). The safety circuit ( ) includes a NOR gate ( ) having one input connected to a disk motor drive control signal terminal ( ) of a system controller ( ), and another input connected to the output (P ) of a sensor ( ). The system controller ( ) puts out a signal that goes low for activating a motor ( ) and high for inactivating the same. The motor ( ) is set into rotation when the NOR gate ( ) is high, and out of rotation when the NOR gate is low. When the sensor ( ) is high, however, the NOR gate ( ) goes low, stopping the motor ( ), regardless of the other input to the NOR gate from the system controller ( ).