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:
Mar. 08, 1988
Filed:
Sep. 24, 1985
Applicant:
Inventor:
Daniel T Sullivan, Bolton, MA (US);
Assignee:
Analog and Digital Systems, Inc., Wilmington, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G06K / ;
U.S. Cl.
CPC ...
365 45 ; 364514 ;
Abstract
Variably delaying an audio signal by storing digital representions of the audio signal at sequential memory locations prescribed by an encoding pointer operating at one clock rate, and reading from the memory at sequential locations prescribed by a decoding pointer operating at the same or a different clock rate, with the difference in clock rates between the pointers prescribing the rate of change of delay. A memory addressing system in which a processor specifies the high-order portion of a memory address and a separate counter, clocked at a much higher rate than the processor, provides the low-order portion of the address.