发明名称 |
Video timing display indicator |
摘要 |
A timing alignment or offset display shows the relationship between a reference signal and a test signal, in particular two analog or digital video signals. Timing extraction circuits derive a lower frequency signal synchronized to horizontal lines and a higher frequency signal synchronized to the pixel sampling rate. A reference time pulse is also derived from the reference signal. Two offsets are counted by determining a line count and a sample or clock cycle count between corresponding reference points in the test and reference signals. A coarse line count offset and a fine timing offset are thereby obtained and are displayed by movable markers on opposite sides of a scale line. The markers are centering and aligned when the frame/field alignment and the color and/or sample portions of the signals correspond in time. Tabular data, distinct coloring and alarms also are depicted.
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申请公布号 |
US7233349(B2) |
申请公布日期 |
2007.06.19 |
申请号 |
US20040931538 |
申请日期 |
2004.09.01 |
申请人 |
VIDEOTEK, INC. |
发明人 |
MAUGER RANDY A.;ZWIEBEL ROBERT C.;GUERRERO DAVID R. |
分类号 |
H04N17/00;G01R13/00;G01R13/02;G01R29/26;G06F19/00;H04N17/02 |
主分类号 |
H04N17/00 |
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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