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:
Dec. 19, 2000
Filed:
Sep. 22, 1998
Shinichi Yamada, Tochigi, JP;
Michitaka Honda, Tochigi, JP;
Masayuki Nishiki, Tochigi, JP;
Kunio Aoki, Tochigi, JP;
Takuya Sakaguchi, Tochigi, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
According to information input through a keyboard, an X-ray irradiation condition selecting portion selects an X-ray irradiation condition, retrieves a correspondence table according to this X-ray irradiation condition so as to read out a gain control state suitable for an irradiation condition, and drives an analog SW setting portion. According to a signal from the analog SW setting portion, an integration capacity of an initial stage integration amplifier is changed over. Further, according to other mode, accumulated electric charge Q of a picture element Cp is read out on a signal line and converted to a voltage Vo by the integration amplifier. By appropriately determining a sampling time by a sample/hold circuit after electric charge is read out, an influence of a switching element resistance can be excluded from a voltage Vx. Therefore, the voltage Vx can be sample held stably. Further, because the integration circuit has a characteristic of damping a high frequency noise generated in the integration amplifier, the S/N ratio of the voltage Vx can be improved.