发明名称 |
Image pickup apparatus and counter circuit used therein. |
摘要 |
An image pickup apparatus includes a lens, and a solid-state image sensor for converting light which passes through the lens into an electric signal. A signal processing circuit serves to process the electric signal outputted from the solid-state image sensor. A Gray code counter serves to count pulses of a first clock signal and to generate Gray codes in response to the first clock signal. A device functions to feed a second clock signal and a synchronizing signal to the solid-state image sensor and the signal processing circuit in response to the Gray codes generated by the Gray code counter respectively. A counter circuit includes n-bit counting stages where n denotes a predetermined natural number, and a plurality of logic decoders for feeding logic outputs to input terminals of the respective counting stages, the logic outputs being equivalent to a product of a first logic output of a (k-1)-th-bit counting stage and second logic outputs of a (k-2)-th-bit counting stage and lower-bit counting stages where k denotes a natural number between 3 and n. <IMAGE>
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申请公布号 |
EP0456193(A2) |
申请公布日期 |
1991.11.13 |
申请号 |
EP19910107415 |
申请日期 |
1991.05.07 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
HACHIYAMA, HIROKI;IWASAWA, TAKAHIRO;OHMAE, MASANORI;YOSHIDA, MASAKATSU;HATANO, TOSHINOBU;TSUJI, MASAKAZU |
分类号 |
H03K23/00;H04N5/067;H04N5/335 |
主分类号 |
H03K23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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