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. 13, 1997
Filed:
Apr. 24, 1995
Toshiyuki Negishi, Ohizumi-machi, JP;
Advantest Corporation, Tokyo, JP;
Abstract
A calibration data transmission apparatus and method for a semiconductor test equipment is disclosed which is capable of decreasing the capacity of a memory for storing the calibration data and also reducing the time for transmitting the calibration data. The calibration data transmission apparatus includes a pin mode data memory which stores different types of calibration mode data for each test pin, a calibration file memory which stores calibration data each of which corresponds to each test pin and the calibration mode data, and a calibration flag circuit which detects a coincidence between the calibration data to be transmitted and the previous calibration data. In another aspect, the data transmission apparatus further includes a calibration transmission sequence part which controls a sequence of transmitting the calibration data, a pin counter which is controlled by the calibration transmission sequence part to generate the address data for the calibration file memory and a par-pin control part which controls the timing of incrementing the calibration file memory based on a signal from the calibration flag circuit showing a coincidence or non-coincidence of the present calibration data and the previous calibration data.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile