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:
Jan. 15, 1991
Filed:
Nov. 16, 1989
Seiko Instruments, Inc., Chiba, JP;
Abstract
An apparatus for providing an indication of the amplitude of a length signal having a top peak, a bottom peak and an intrinsic offset and being indicative of viscoelasticity of a sample. A peak measurement circuit is provided for measuring values of top and bottom peaks of the length signal to determine the amplitude thereof and an offset circuit is connected for providing a compensative offset. An adder circuit is provided for adding the compensative offset to the length signal. An offset calculation circuit receptive of the values of the top and bottom peaks from the peak measurement circuit is provided for outputting to the offset circuit, according to the received values, a control signal effective to control the offset circuit to provide an update compensative offset effective to cancel the intrinsic offset of the length signal.