Title:
【発明の名称】カメラ用シヤッタ
Document Type and Number:
Japanese Patent JP2952606
Kind Code:
B2
Abstract:
A camera shutter system includes a matrix memory, an arrangement for determining the initial speed of a shutter sector, and a source of exposure values. The memory stores shutter-exposure pulse data elements, and is addressed by functions of the determined speed and the exposure values. A motor coupled to the sector is controlled in response to an accessed pulse data element. The data elements may relate only to variable portions of movement of the shutter, and be added to fixed values in order to minimize the size of the memory.
Inventors:
TAGAMI SHIGERU
AKIMOTO KAZUO
MATSUSHITA KATSUHIKO
ITO KANJI
AKIMOTO KAZUO
MATSUSHITA KATSUHIKO
ITO KANJI
Application Number:
JP16355090A
Publication Date:
September 27, 1999
Filing Date:
June 21, 1990
Export Citation:
Assignee:
SEIKOO PURESHIJON KK
International Classes:
G03B7/093; G03B7/097; G03B7/10; G03B7/22; G03B9/08; G03B9/10; G03B9/60; (IPC1-7): G03B7/093; G03B7/10; G03B7/22; G03B9/08; G03B9/10
Domestic Patent References:
| JP5846330A | ||||
| JP2296228A | ||||
| JP5842033A | ||||
| JP3109531A | ||||
| JP2296229A | ||||
| JP342639A | ||||
| JP61163027A | ||||
| JP62194239A | ||||
| JP6094635U |
Attorney, Agent or Firm:
Kazuko Matsuda