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:
Feb. 18, 1986
Filed:
Aug. 09, 1982
James M DeArras, Richmond, VA (US);
Hand-Held Products, Inc., Charlotte, NC (US);
Abstract
An apparatus for making available to a calculator remote programs provided on memory chips and transferring the data stored in the chips into the calculator using only the power supply of the calculator. A connector extends between the calculator and the apparatus for supplying a chain of clock pulses from the calculator for controlling the transfer of data between the apparatus and the calculator. The EPROM chips are temporarily turned on with power generated by the power supply carried in the calculator transferring the data stored in the chip to a temporary storage device. Data is transferred from the temporary storage device to the calculator at a slower rate than the rate that the data is transferred into the temporary storage device from the chip. Power is cut off to the chip immediately after the data is transferred from the chip to the temporary storage device minimizing the power requirement for transferring data from the chip to the calculator. A pair of semi-conductive devices and a capacitor are used for temporarily turning on the chip with the power.