发明名称 |
Integrated AD converter, solid state imaging device, and camera system |
摘要 |
An integrated AD converter includes: a comparator comparing an input voltage with a reference voltage with a ramp waveform whose voltage value linearly changes with time; a high-bit counter triggered by inversion of an output signal of the comparator to start or stop an operation of counting for every cycle of a main clock signal; a time quantizer latching phase information at a timing at which the output signal is inverted using a plurality of clock signals including main clock signals of different phases, and decodes a value of the latched phase information to thereby output lower bits with a resolution higher than a clock cycle; and a regulating unit synchronizing the output signal with the main clock signal, and determines timings of starting and stopping the operation of the high-bit counter and a value for latching the phase information of the main clock signal using a signal resulting from the synchronization.
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申请公布号 |
US8456554(B2) |
申请公布日期 |
2013.06.04 |
申请号 |
US20100659585 |
申请日期 |
2010.03.15 |
申请人 |
TAKAHASHI TOMOHIRO;SONY CORPORATION |
发明人 |
TAKAHASHI TOMOHIRO |
分类号 |
H04N5/335;H03M1/08;H03M1/34;H03M1/56;H04N5/357;H04N5/374;H04N5/378 |
主分类号 |
H04N5/335 |
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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