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1. 发明申请

US20110285907A1 TELEVISION BROADCAST RECEIVING APPARATUS 失效
标题翻译：电视广播接收设备
公开(公告)号：US20110285907A1
公开(公告)日：2011-11-24
申请号：US13091175
申请日：2011-04-21
申请人： Hiroyuki YAMAGUCHI , Tsuyoshi Itaya
发明人： Hiroyuki YAMAGUCHI , Tsuyoshi Itaya
IPC分类号： H03L7/00
CPC分类号： H04N5/60 , H04N5/04 , H04N5/455
摘要： A television broadcast receiving apparatus has a demodulating unit including a PLL part synchronizing a phase of an IF signal with a phase of an internally generated carrier signal and outputting an out-of-synchronization flag signal when the IF signal and the carrier signal are in an unsynchronized state, and a muting part muting a sound intermediate frequency signal and outputting a noise signal of a predetermined level when the out-of-synchronization flag signal is outputted from the PLL part. Therefore, even when an IF amplifier of a tuning unit amplifies a noise at the maximum gain when there is no signal, an abnormal sound can be prevented from being outputted from a speaker of a decode and output unit.
摘要翻译：电视广播接收装置具有解调单元，该解调单元包括PLL部分，其将IF信号的相位与内部产生的载波信号的相位相同步，并且当IF信号和载波信号处于不同步状态，以及静音部分使声音中频信号静音，并且当从PLL部分输出失步标志信号时，输出预定电平的噪声信号。因此，即使当没有信号时调谐单元的IF放大器放大最大增益的噪声，也可以防止从解码和输出单元的扬声器输出异常声音。

2. 发明授权

US08339517B2 Television broadcast receiving apparatus 失效
标题翻译：电视广播接收装置
公开(公告)号：US08339517B2
公开(公告)日：2012-12-25
申请号：US13091175
申请日：2011-04-21
申请人： Hiroyuki Yamaguchi , Tsuyoshi Itaya
发明人： Hiroyuki Yamaguchi , Tsuyoshi Itaya
IPC分类号： H04N3/24 , H04N5/60
CPC分类号： H04N5/60 , H04N5/04 , H04N5/455
摘要： A television broadcast receiving apparatus has a demodulating unit including a PLL part synchronizing a phase of an IF signal with a phase of an internally generated carrier signal and outputting an out-of-synchronization flag signal when the IF signal and the carrier signal are in an unsynchronized state, and a muting part muting a sound intermediate frequency signal and outputting a noise signal of a predetermined level when the out-of-synchronization flag signal is outputted from the PLL part. Therefore, even when an IF amplifier of a tuning unit amplifies a noise at the maximum gain when there is no signal, an abnormal sound can be prevented from being outputted from a speaker of a decode and output unit.
摘要翻译：电视广播接收装置具有解调单元，该解调单元包括PLL部分，其将IF信号的相位与内部产生的载波信号的相位同步，并且当IF信号和载波信号处于不同步状态，以及静音部分使声音中频信号静音，并且当从PLL部分输出失步标志信号时，输出预定电平的噪声信号。因此，即使当没有信号时调谐单元的IF放大器放大最大增益的噪声时，也可以防止从解码和输出单元的扬声器输出异常声音。

3. 发明申请

US20110051013A1 FRONT-END CIRCUIT, TUNER, AND TELEVISION BROADCASTING RECEIVER 有权
标题翻译：前端电路，调谐器和电视广播接收器
公开(公告)号：US20110051013A1
公开(公告)日：2011-03-03
申请号：US12822819
申请日：2010-06-24
申请人： Mutsumi Hamaguchi , Tsuyoshi Itaya
发明人： Mutsumi Hamaguchi , Tsuyoshi Itaya
IPC分类号： H04N5/50 , H02M5/00
CPC分类号： H04N5/50 , H03J1/0083 , H04N21/42607 , H04N21/4263 , H04N21/4382
摘要： A front-end circuit according to the present invention includes a VCO which oscillates a local signal, a mixer which converts an RF signal Frf into a baseband signal, a DC offset cancel circuit which detects a DC offset contained in the baseband signal and then eliminates the DC offset, and a local frequency control circuit which controls a frequency of the local signal. In a case where the RF signal is an analog television signal, the local frequency control circuit controls the frequency of the local signal so that a frequency of the baseband signal differs from each frequency spectrum of a luminance signal contained in a video signal which is generated by demodulating the baseband signal. This makes it possible to provide the front-end circuit which can prevent video distortion caused when a frequency spectrum is eliminated from the luminance signal.
摘要翻译：根据本发明的前端电路包括振荡本地信号的VCO，将RF信号Frf转换成基带信号的混频器，检测基带信号中包含的DC偏移然后消除的DC偏移消除电路 DC偏移，以及控制本地信号频率的本地频率控制电路。在RF信号是模拟电视信号的情况下，本地频率控制电路控制本地信号的频率，使得基带信号的频率与包含在生成的视频信号中的亮度信号的每个频谱不同通过解调基带信号。这使得可以提供可以防止当从亮度信号中消除频谱时引起的视频失真的前端电路。

4. 发明申请

US20090080167A1 PRINTED CIRCUIT BOARD SECURING STRUCTURE AND TUNER UNIT 审中-公开
标题翻译：印刷电路板安全结构和调谐单元
公开(公告)号：US20090080167A1
公开(公告)日：2009-03-26
申请号：US12181106
申请日：2008-07-28
申请人： Tomotake KISHIDA , Tsuyoshi Itaya
发明人： Tomotake KISHIDA , Tsuyoshi Itaya
IPC分类号： H05K7/14
CPC分类号： H05K9/002 , H05K9/006
摘要： In one embodiment of a printed circuit board securing structure and a tuner unit according to the present invention, a chassis comprises a chassis frame that surrounds the lateral faces of a printed circuit board and a shield plate that partitions the space within the chassis frame, and circuit board holding parts for holding the printed circuit board between the circuit board holding parts and the shield plate are disposed on inner wall faces of the chassis frame. The circuit board holding parts are configured to be able to secure the printed circuit board from both faces.
摘要翻译：在根据本发明的印刷电路板固定结构和调谐器单元的一个实施例中，底架包括围绕印刷电路板的侧面的底盘框架和分隔底盘框架内的空间的屏蔽板，以及在电路板保持部和屏蔽板之间保持印刷电路板的电路板保持部配置在底架的内壁面上。电路板保持部件被构造成能够从两个面固定印刷电路板。

5. 发明授权

US07831198B2 Broadcast receiving apparatus 有权
标题翻译：广播接收装置
公开(公告)号：US07831198B2
公开(公告)日：2010-11-09
申请号：US11889592
申请日：2007-08-15
申请人： Tomotake Kishida , Tsuyoshi Itaya
发明人： Tomotake Kishida , Tsuyoshi Itaya
IPC分类号： H04H20/74
CPC分类号： H04N5/46 , H04N5/4401 , H04N21/42638
摘要： A terrestrial broadcast tuner section is disposed in an area A1, and frequency-converts an externally supplied terrestrial broadcast signal into an IF signal. A terrestrial broadcast analog demodulation section is disposed in an area A3, and demodulates the IF signal frequency-converted by the terrestrial broadcast tuner section. A satellite broadcast tuner section is disposed in an area A2, and frequency-converts an externally supplied satellite broadcast signal into a signal having a frequency band lower than that of the satellite broadcast signal. A digital demodulation section is disposed in an area A4, and demodulates the signal supplied from either one of the terrestrial broadcast tuner section and the satellite broadcast tuner section. With this arrangement, a broadcast receiving apparatus easily changeable from the one for analog and digital broadcasting to the one for digital broadcasting only can be provided.
摘要翻译：地面广播调谐器部分设置在区域A1中，并将外部提供的地面广播信号频率转换为IF信号。地面广播模拟解调部分设置在区域A3中，并解调由地面广播调谐器部分频率转换的IF信号。卫星广播调谐器部分设置在区域A2中，并将外部提供的卫星广播信号频率转换成具有低于卫星广播信号的频带的信号。数字解调部分被布置在区域A4中，并且解调从地面广播调谐器部分和卫星广播调谐器部分中的任一个提供的信号。利用这种布置，可以提供容易地从用于模拟和数字广播的广播接收设备改变为用于数字广播的广播接收设备。

6. 发明授权

US08319899B2 Front-end circuit, tuner, and television broadcasting receiver 有权
标题翻译：前端电路，调谐器和电视广播接收机
公开(公告)号：US08319899B2
公开(公告)日：2012-11-27
申请号：US12822819
申请日：2010-06-24
申请人： Mutsumi Hamaguchi , Tsuyoshi Itaya
发明人： Mutsumi Hamaguchi , Tsuyoshi Itaya
IPC分类号： H04N5/44
CPC分类号： H04N5/50 , H03J1/0083 , H04N21/42607 , H04N21/4263 , H04N21/4382
摘要： A front-end circuit according to the present invention includes a VCO which oscillates a local signal, a mixer which converts an RF signal Frf into a baseband signal, a DC offset cancel circuit which detects a DC offset contained in the baseband signal and then eliminates the DC offset, and a local frequency control circuit which controls a frequency of the local signal. In a case where the RF signal is an analog television signal, the local frequency control circuit controls the frequency of the local signal so that a frequency of the baseband signal differs from each frequency spectrum of a luminance signal contained in a video signal which is generated by demodulating the baseband signal. This makes it possible to provide the front-end circuit which can prevent video distortion caused when a frequency spectrum is eliminated from the luminance signal.
摘要翻译：根据本发明的前端电路包括振荡本地信号的VCO，将RF信号Frf转换成基带信号的混频器，检测基带信号中包含的DC偏移然后消除的DC偏移消除电路 DC偏移，以及控制本地信号频率的本地频率控制电路。在RF信号是模拟电视信号的情况下，本地频率控制电路控制本地信号的频率，使得基带信号的频率与包含在生成的视频信号中的亮度信号的每个频谱不同通过解调基带信号。这使得可以提供可以防止当从亮度信号中消除频谱时引起的视频失真的前端电路。

7. 发明申请

US20080060022A1 Broadcast receiving apparatus 有权
标题翻译：广播接收装置
公开(公告)号：US20080060022A1
公开(公告)日：2008-03-06
申请号：US11889592
申请日：2007-08-15
申请人： Tomotake Kishida , Tsuyoshi Itaya
发明人： Tomotake Kishida , Tsuyoshi Itaya
IPC分类号： H04N7/20
CPC分类号： H04N5/46 , H04N5/4401 , H04N21/42638
摘要： A terrestrial broadcast tuner section is disposed in an area A1, and frequency-converts an externally supplied terrestrial broadcast signal into an IF signal. A terrestrial broadcast analog demodulation section is disposed in an area A3, and demodulates the IF signal frequency-converted by the terrestrial broadcast tuner section. A satellite broadcast tuner section is disposed in an area A2, and frequency-converts an externally supplied satellite broadcast signal into a signal having a frequency band lower than that of the satellite broadcast signal. A digital demodulation section is disposed in an area A4, and demodulates the signal supplied from either one of the terrestrial broadcast tuner section and the satellite broadcast tuner section. With this arrangement, a broadcast receiving apparatus easily changeable from the one for analog and digital broadcasting to the one for digital broadcasting only can be provided.
摘要翻译：地面广播调谐器部分设置在区域A 1中，并将外部提供的地面广播信号频率转换成IF信号。地面广播模拟解调部分设置在区域A 3中，并解调由地面广播调谐器部分频率转换的IF信号。卫星广播调谐器部分设置在区域A 2中，并将外部提供的卫星广播信号频率转换成具有低于卫星广播信号的频带的信号。数字解调部分设置在区域A 4中，并且解调从地面广播调谐器部分和卫星广播调谐器部分中的任一个提供的信号。利用这种布置，可以提供容易地从用于模拟和数字广播的广播接收设备改变为用于数字广播的广播接收设备。

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