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. 10, 1991
Filed:
Jan. 30, 1991
U.S. Philips Corporation, New York, NY (US);
Abstract
A method is revealed for recording an information signal (Vi) on a record carrier (1). The information signal (Vi) is converted into code words (200), which comprise a variable number of bits of a first logic value ('1') and a variable number of bits of a second logic value ('0'). The number of successive bits of the first logic value ('1') is at least equal to P. The number of successive bits of the second logic value, situated between the bits of the first logic value, is at least equal to Q, Q being greater than P. A pattern of recording marks (8;54) corresponding to the code signal (Vc) is recorded on the record carrier (1) in such a way that bits of the first logic value ('1') are represented by recording marks (8;54). Moreover, an information recording device (FIG. 17), an information read device, and a decoding device (FIG. 18) are revealed.