发明名称 |
Dark current measurement and correction for video from field-transfer imagers |
摘要 |
In a television camera including an imager of the field-transfer type having A, B and C registers, an indication signal representative of dark current response accompanying the video signal is generated by comparing first and second signals representative of charge packets derived from the B and C registers, respectively. Specifically, the first signal is generated when the C register supplies signals supplied from the B register which includes substantially no photo-responsive components transferred from the A register. The second signal is generated when the C register supplies signals after the signal supplied from the B register have already been read out and while no new signals from the B register are being transferred into the C register and therefore represents absolute black.
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申请公布号 |
US4589025(A) |
申请公布日期 |
1986.05.13 |
申请号 |
US19840676815 |
申请日期 |
1984.11.30 |
申请人 |
RCA CORPORATION |
发明人 |
MONAHAN, JOHN F.;HACKE, JOSEPH F.;CASNE, THOMAS F. |
分类号 |
H04N5/335;H04N5/361;H04N5/372;H04N17/00;(IPC1-7):H04N5/16 |
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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