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:
Oct. 27, 1987
Filed:
Sep. 19, 1985
Joseph A Crupi, Eatontown, NJ (US);
David J Hayward, Lincroft, NJ (US);
David F Jones, Middletown, NJ (US);
American Telephone and Telegraph Company, New York, NY (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
A communication system controller is operable under program calls from two memories which are independently changeable. A first memory includes a group of hardware-dependent programs and a second memory includes a group of hardware-independent programs. Calls are initiated by programs resident on the first memory to an interface program resident on the second memory at an address known to programs of the first memory. This interface program call includes an argument indentifyng the function program to be called. The interface program uses the argument to determine the location of the function program from a program table and then transfers control to the function program.