发明名称 |
Video signal processing apparatus |
摘要 |
A video signal processing apparatus comprises a sub-screen processing integrated circuit for subjecting a sub-screen video signal to scale-down processing to reduce its display region and output the sub-screen video signal, and a main-screen processing integrated circuit comprising: a switching circuit for receiving a main-screen video signal and the scaled-down sub-screen video signal which is outputted from the sub-screen processing integrated circuit, and selecting the main-screen video signal for a main-screen display region while selecting the sub-screen video signal for a sub-screen display region; an A/D conversion circuit for converting the video signal outputted from the switching circuit into a digital video signal; a digital signal processing circuit for digitally processing the digital video signal outputted from the A/D conversion circuit; and a D/A conversion circuit for converting the digitally-processed video signal into an analog video signal. Therefore, the main-screen video signal and the sub-screen video signal can be combined so that these signals are displayed on a single screen, and the circuit scale of the video signal processing apparatus can be minimized.
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申请公布号 |
US6903781(B2) |
申请公布日期 |
2005.06.07 |
申请号 |
US20020184053 |
申请日期 |
2002.06.28 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TANIGAWA SATORU;KAGEYAMA ATSUHISA;SHIBUTANI RYUICHI |
分类号 |
H04N5/265;G09G5/00;H04N5/45;H04N9/64;H04N9/67;H04N9/74;H04N9/78;(IPC1-7):H04N5/45;H04N5/445 |
主分类号 |
H04N5/265 |
代理机构 |
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