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:
Nov. 03, 1981
Filed:
Nov. 23, 1979
Frank D Sundermeyer, Middletown, CT (US);
Richard W Calcasola, Longmeadow, MA (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A DITS receiver provides direct memory access (DMA) for a central processing unit (CPU) to the latest update value of a plurality of pre-identified signal data words stored in a DITS data RAM. The DITS stores the data received asynchronously on a plurality of input channels directly in RAM as it is received, by stripping the first byte of the data word information field which identifies the data source and using this first byte ID as an address pointer to define the location in RAM for each remaining signal bit of the data word. The DITS slices the data received on each input channel into samples of less than one bit cell duration through a common sampling network which under sequence control provides commutation of the input channel samples to ensure that dual speed input channel are each sampled at least one time within the signal speed time period. The sampled data is multiplexed into a serial data stream and steered either to a first byte address register or directly to the data RAM.