发明名称 |
System for converting number of scanning lines |
摘要 |
A system for converting number of scanning lines converts a first number of scanning lines of a first digital video signal into a second number of scanning lines of a second digital video signal. The system comprises a discrete signal obtaining circuit supplied with the first digital video signal, for successively re-arranging a plurality of picture element information arranged along lines in a vertical direction with respect to a picture frame indicated by the first digital video signal within a time interval corresponding to the first number of scanning lines in units of each of the lines in the vertical direction in a time series manner, to obtain a discrete signal having a sampling frequency equal to a horizontal scanning frequency of the first digital video signal, a sampling frequency converter for converting the sampling frequency of the discrete signal obtained from the discrete signal obtaining circuit into a frequency equal to a horizontal scanning frequency of the second digital video signal, and a second video signal obtaining circuit for successively re-arranging an output of the sampling frequency converter in units of a plurality of picture element information along a direction of horizontal scanning lines in accordance with the second digital video signal in a time series manner, to obtain the second digital video signal using the second number of scanning lines.
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申请公布号 |
US4471381(A) |
申请公布日期 |
1984.09.11 |
申请号 |
US19820357132 |
申请日期 |
1982.03.11 |
申请人 |
VICTOR COMPANY OF JAPAN, LIMITED |
发明人 |
KASUGA, MASAO;TAKAHASHI, NOBUAKI;SHIBAMOTO, TAKESHI |
分类号 |
H04N7/01;(IPC1-7):H04N5/02 |
主分类号 |
H04N7/01 |
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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