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:
Aug. 15, 1989
Filed:
Jul. 02, 1987
Charles P Boreland, Waterbury, CT (US);
General DataComm, Inc., Middlebury, CT (US);
Abstract
A serial arithmetic processor arranged to perform the complex arithmetic functions of the Adaptive Differential Pulse Coded Modulation (ADPCM) algorithm. The serial arithmetic processor includes a first common circuit which is arranged to take advantage of the realization that a large portion of the LOG, FLOAT, and ANTILOG functions can be implemented in common hardware. The serial arithmetic processor further includes a second common circuit which is arranged to take advantage of the realization that large portions of the MULTIPLICATION and FLOATING POINT MULTIPLICATION functions can be implemented in other common hardware. A controller is provided for controlling logic and other circuitry in the first and second common circuits depending upon the desired function to be performed. In addition, a connection of the output of the first common circuit to the input of the second common circuit is preferably provided so that the result of a FLOAT operation can be directly used as the multiplier in a FLOATING POINT MULTIPLICATION operation.