发明名称 |
Counter circuit, AD conversion method, AD converter, semiconductor device for detecting distribution of physical quantities, and electronic apparatus |
摘要 |
An asynchronous counter that is capable of switching count mode includes flip-flops, and three-input single-output tri-value switches respectively provided between the adjacent pairs of the flip-flops. The tri-value switches switch among three values, namely, non-inverting outputs and inverting outputs of the flip-flops and a power supply level. Each of the tri-value switches switch among the three input signals according to two-bit control signals, and input a selected signal to a clock terminal of a subsequent flip-flop. When count mode is switched according to the control signals, a count value immediately before the mode switching is set as an initial value, and counting after the mode switching is started from the initial value.
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申请公布号 |
US7495597(B2) |
申请公布日期 |
2009.02.24 |
申请号 |
US20070862364 |
申请日期 |
2007.09.27 |
申请人 |
SONY CORPORATION |
发明人 |
MURAMATSU YOHINORI;FUKUSHIMA NORIYUKI;NITTA YOSHIKAZU;YASUI YUKIHIRO |
分类号 |
H03M1/34;H03K23/00;H03K23/56;H03K23/62;H03M1/48;H04N5/335;H04N5/374;H04N5/376;H04N5/378 |
主分类号 |
H03M1/34 |
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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