Invention Grant
- Patent Title: CATV system and automatic noise controller
- Patent Title (中): CATV系统和自动噪声控制器
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Application No.: US11797390Application Date: 2007-05-03
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Publication No.: US07757262B2Publication Date: 2010-07-13
- Inventor: Takuzo Mitsuse , Hirofumi Kuwahara
- Applicant: Takuzo Mitsuse , Hirofumi Kuwahara
- Applicant Address: CN Shenzhen JP Kamakura
- Assignee: Hwa Lin Electronic (Shenzhen) Co., Ltd.,Takuzo Mitsuse
- Current Assignee: Hwa Lin Electronic (Shenzhen) Co., Ltd.,Takuzo Mitsuse
- Current Assignee Address: CN Shenzhen JP Kamakura
- Agency: Muncy, Geissler, Olds & Lowe, PLLC
- Main IPC: H04N7/173
- IPC: H04N7/173
Abstract:
The present invention relates to a CATV circuit with an automatic noise controller and a CATV system using the CATV circuit. The CATV circuit is used for automatically reducing upstream noises occurred in a CATV circuit for bidirectional communications between a control center and a home terminal. A variable attenuation method is applied to the CATV circuit, and a noise level measurement method is applied to measure the upstream noise level and control the attenuation rate according to the measured noise level.
Public/Granted literature
- US20070288981A1 CATV system and automatic noise controller Public/Granted day:2007-12-13
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