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公开(公告)号:US07053961B2
公开(公告)日:2006-05-30
申请号:US10781289
申请日:2004-02-17
申请人: Norihisa Ina , Hiromichi Sano
发明人: Norihisa Ina , Hiromichi Sano
IPC分类号: H04N5/52
CPC分类号: H04N5/4446 , H03G3/3068 , H04N5/46 , H04N5/52
摘要: In a terrestrial mode of a TV having analog and digital capability, the RF gain is controlled using the TV's IF tuner output. In a digital cable mode the RF gain is controlled using the output of the TV's IF SAW filter, and in an analog cable mode the RF gain is controlled using the output of an analog demodulator.
摘要翻译: 在具有模拟和数字功能的电视机的地面模式中,使用电视的IF调谐器输出来控制RF增益。 在数字电缆模式下,使用TV的IF SAW滤波器的输出控制RF增益,在模拟电缆模式下,使用模拟解调器的输出控制RF增益。
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公开(公告)号:US20050179820A1
公开(公告)日:2005-08-18
申请号:US10781289
申请日:2004-02-17
申请人: Norihisa Ina , Hiromichi Sano
发明人: Norihisa Ina , Hiromichi Sano
CPC分类号: H04N5/4446 , H03G3/3068 , H04N5/46 , H04N5/52
摘要: In a terrestrial mode of a TV having analog and digital capability, the RF gain is controlled using the TV's IF tuner output. In a digital cable mode the RF gain is controlled using the output of the TV's IF SAW filter, and in an analog cable mode the RF gain is controlled using the output of an analog demodulator.
摘要翻译: 在具有模拟和数字功能的电视机的地面模式中,使用电视的IF调谐器输出来控制RF增益。 在数字电缆模式下,使用TV的IF SAW滤波器的输出控制RF增益,在模拟电缆模式下,使用模拟解调器的输出控制RF增益。
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公开(公告)号:US07133081B2
公开(公告)日:2006-11-07
申请号:US11403030
申请日:2006-04-12
申请人: Norihisa Ina , Hiromichi Sano
发明人: Norihisa Ina , Hiromichi Sano
IPC分类号: H04N5/52
CPC分类号: H04N5/4446 , H03G3/3068 , H04N5/46 , H04N5/52
摘要: In an analog terrestrial mode of a TV having analog and digital capability, the RF gain is controlled using the TV's demodulator output. In a digital cable mode the RF gain is controlled using the output of the TV's IF SAW filter, and in an analog cable mode the RF gain is controlled using the output of an analog demodulator.
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公开(公告)号:US20060181649A1
公开(公告)日:2006-08-17
申请号:US11403030
申请日:2006-04-12
申请人: Norihisa Ina , Hiromichi Sano
发明人: Norihisa Ina , Hiromichi Sano
IPC分类号: H04N5/52
CPC分类号: H04N5/4446 , H03G3/3068 , H04N5/46 , H04N5/52
摘要: In an analog terrestrial mode of a TV having analog and digital capability, the RF gain is controlled using the TV's demodulator output. In a digital cable mode the RF gain is controlled using the output of the TV's IF SAW filter, and in an analog cable mode the RF gain is controlled using the output of an analog demodulator.
摘要翻译: 在具有模拟和数字能力的电视的模拟地面模式中,使用TV的解调器输出来控制RF增益。 在数字电缆模式下,使用TV的IF SAW滤波器的输出控制RF增益,在模拟电缆模式下,使用模拟解调器的输出控制RF增益。
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公开(公告)号:US07043750B2
公开(公告)日:2006-05-09
申请号:US09815100
申请日:2001-03-22
申请人: Norihisa Ina
发明人: Norihisa Ina
IPC分类号: H04N7/173
CPC分类号: H04H20/80 , H03H7/46 , H04N7/102 , H04N7/17309 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要: A circuit arrangement for combining signals in a cable set-top box or television receiver. An out-of-band upstream amplifier and a cable modem upstream amplifier have their outputs combined at a combiner before being passed to the cable through a diplexer. The output of the diplexer provides incoming signals for an in-band tuner, a cable modem tuner and an out-of-band tuner that can be passed through a low noise amplifier before passing through a three-way splitter to divide the signals to each of the tuners.
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