|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 4 인용 특허 : 4|
A focalization detecting device in a camera utilizing a self-scanning type photoelectric device having a number of elements disposed at a position equivalent to the position of the image forming plane of a lens. A drive circuit drives the photoelectric element and a delay circuit delays a discrete output waveform of the photoelectric element the time corresponding to the scanning period of one or two elements. A difference circuit detects an output difference between the delayed waveform and the undelayed waveform. An absolute value circuit detects the a...
A focus detecting device in a camera comprising: a single self-scanning type photoelectric device having a number of elements disposed at a position equivalent to the position of the image forming plane of a lens; a drive circuit for driving said photoelectric element to produce a single discrete time series output waveform; a delay circuit for delaying said single discrete time series output waveform of said single photoelectric element by the time corresponding to at least the scanning period for one element to produce a delayed waveform; signal proces...