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:
Jul. 03, 2001
Filed:
Sep. 16, 1998
Harry T. Garland, Los Altos Hills, CA (US);
Gerald A. May, Saratoga, CA (US);
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Diagnostic x-ray images having uniform optical density are generated by selectively scanning (,) lines of pixels (,) in a sensor unit (,) used to capture x-ray images in a digital radiography system (,). By selectively scanning (,) the lines of pixels (,), the exposure time of such pixels can be controlled. The lines of pixels (,) are selectively scanned (,) according to exposure compensation profiles (,) for the anatomic regions of interest. The exposure compensation profiles (,) include an ordered sequence of exposure times which can be loaded into a programmable timer (,) coupled to read out circuitry (,) located in the sensor unit (,). The timer (,) uses this ordered sequence of exposure times to determine which pixel line to access next, and when to initiate that access. The exposure compensation profiles (,) can be generated (,) from empirical data by taking (,) preliminary low dose exposures of the body parts to be examined.