发明名称 |
Video test method and apparatus with incremental scan rate capability |
摘要 |
A video test pattern generator is able to be incrementally adjusted in its number of lines and in its line resolution, and at the same time is able to produce a reference frequency. The reference frequency is established at a selected value and offset from the selected value by an amount necessary to coincide with a multiple of a scan line frequency. This can be accomplished despite changes in scan rate and raster pattern. A stroke generation capability is provided and the system can be utilized with programmable character generation and can produce a high-resolution image with a minimum of hardware. Further advantages include the ability of the system to adapt to new or changed equipment to be tested.
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申请公布号 |
US4466014(A) |
申请公布日期 |
1984.08.14 |
申请号 |
US19820429884 |
申请日期 |
1982.09.30 |
申请人 |
ALLIED CORPORATION |
发明人 |
WILENSKY, BARRY F.;MAGGI, JOSEPH A. |
分类号 |
G01R31/00;H04N3/00;H04N17/00;H04N17/04;H04N17/06;(IPC1-7):H04N9/62 |
主分类号 |
G01R31/00 |
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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