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:
Sep. 21, 2004
Filed:
Aug. 16, 2001
Tomoe Nishimura, Yokohama, JP;
Akira Hikimura, Yokohama, JP;
Kunihiko Kodama, Yokohama, JP;
Katsutoshi Moriyama, Zushi, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An optical disk recording and reproducing apparatus comprise, a buffer circuit which receive and store data and output the stored data, an EFM modulation circuit which receive data output from the buffer circuit, adding a frame synchronous signal and sub-code data, subjecting these items of data to the EFM modulation to create record data, a buffer remaining amount control circuit for detecting the remaining amount of data stored in the buffer circuit, a record control circuit for conducting the control for temporarily suspending the recording operation to the optical disk at an arbitrary position of the main data of the record data excluding the frame synchronous signal and the sub-code data in the case where the detection result of the remaining amount of data in the buffer remaining amount control circuit corresponds to the state in which the buffer underrun is generated.