Title: Automatic exposure control circuit for a camera

Abstract: An automatic exposure control circuit for a camera or the like includes a memory circuit comprising a series connection of a capacitor and an impedance element connected to an input of a high input impedance circuit to enable the measurement of the amount of mean light during photography under a fluorescent lamp.

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Inventors: Tsuda, Yuji (Hirakata, JA)
Kajiwara, Junji (Kadoma, JA)
Komori, Shigekazu (Neyagawa, JA)

Application Number: 518882
Filing Date: 1974-10-29
Publication_date: 1976-08-10
Assignee: Matsushita Electric Industrial Co., Ltd. (JA)
Primary Class(es): 396/252
Other Classes:
US Patent Ref:

3611894	Oct, 1971	Minneste	354/43.
3712192	Jan, 1973	Ono et al.	354/51.
3817617	Jun, 1974	Weinert	352/141.
3827066	Jul, 1974	Yanagisawa et al.	354/51.

Other Refs:
Primary Examiner: Hix, L. T.
Assistant Examiner: LaBarre, James
Attorney: Stevens, Davis, Miller & Mosher