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:
May. 15, 1990
Filed:
Jul. 02, 1987
Charles P Boreland, Waterbury, CT (US);
General DataComm, Inc., Middlebury, CT (US);
Abstract
A digital signal processor (DSP) for conducting arithmetically complex functions, is provided. The DSP is preferably embodied as a single integrated circuit chip and generally includes a microinstruction sequencer (MIS) section, an arithmetic logic unit (ALU), a serial arithmetic processor section, a RAM section, and a system data bus. The MIS includes a coded ROM, a circuit for addressing the ROM, a ROM decoder for decoding the ROM code into control and data signals, and circuitry for sending the control and data signals to desired locations, and controls the functioning of the DSP. The ALU performs arithmetic and logic functions under the control of the ROM, while the serial arithmetic processor section conducts arithmetically complex functions under the control of the ROM. The RAM, under control of the ROM receives and stores data which is sent to the RAM via a system data bus directly from the ROM, from the ALU, from the serial arithmetic processor, and from circuitry exterior to the DSP. The RAM also sends via the data bus data to the ALU, the serial arithmetic processor, the microinstruction sequencer and the circuitry exterior to said digital signal processor under control of the ROM. The provided DSP is particularly advantageous in carrying out ADPCM algorithms.