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. 08, 1994
Filed:
Apr. 29, 1991
Makoto Shinohara, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Disclosed is a data processing device with a test control circuit comprising a CPU, peripheral devices such as a ROM, a RAM, and the like, an address bus through which the CPU is connected to the peripheral devices, an input/output circuit as an interface circuit for controlling transfer of data input/output and an address signal between the address bus and the data bus and an external device, and a control circuit incorporated in the data processing device for isolating the address bus and the data bus from the CPU in a test mode of the device and for controlling the input/output operations for the peripheral devices, the operation of the input/output control circuit, and the operation of the CPU.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile