发明名称 |
Method and apparatus for providing a visual indication of a relationship between two signals |
摘要 |
A visual indication of the relationship between first and second electrical signals, such as the left and right channel signals in a stereophonic audio system, is provided through use of a video vectorscope. The first and second signals are used to modulate the amplitude of two sinusoidal waves at a subcarrier frequency and in phase quadrature, so as to synthesize the chrominance portion of a composite video signal. The two modulated sine waves are additively combined, and the resulting signal is applied to the input terminal of the vectorscope.
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申请公布号 |
US4648113(A) |
申请公布日期 |
1987.03.03 |
申请号 |
US19850774781 |
申请日期 |
1985.09.11 |
申请人 |
TEKTRONIX, INC. |
发明人 |
HORN, JOHN J.;BAKER, DANIEL G. |
分类号 |
H04N17/02;G09G1/08;H04N17/00;H04N17/06;H04S7/00;(IPC1-7):H04R5/00 |
主分类号 |
H04N17/02 |
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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