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:
Dec. 05, 1978
Filed:
Jul. 11, 1977
Hiroshi Yasuhara, Tokyo, JP;
Seiki Saito, Tokyo, JP;
Oki Electric Industry, Co., Ltd., Tokyo, JP;
Abstract
A computer system having a 'program call instruction' which enables the use of a common program in a plurality of main program systems. The program call instruction has a pair of address parts (A) and (B), the first address part (A) is transferred to the program counter which indicates the current excuted program address and the second address part is transferred to the second push down stack. Before excuting the program call instruction the content of the program counter is transferred to the first push down stack. In excuting the common program, the content of the program counter and the output of the second push down stack are compared and when they coincide the output of the first push down stack is transferred to the program counter to return to a main program.