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    • 1. 发明授权
    • 텔레비젼신호 수신튜너
    • 텔레비젼신호수신튜너
    • KR100427435B1
    • 2004-04-14
    • KR1020010061185
    • 2001-10-04
    • 알프스 덴키 가부시키가이샤
    • 스즈키다케오오사다시게루
    • H04N5/50
    • H03J5/244H03J1/0041H03J3/32H03J5/24H03L7/0805H03L7/099
    • A TV signal receiving tuner which is small in size and inexpensive due to a reduced number of local oscillators. In the TV signal receiving tuner, a local oscillation signal output from a local oscillator is directly applied to a first mixer (9) through a first programmable divider (16) to receive a UHF TV signal, the local oscillation signal output from the local oscillator is applied to the first mixer after its frequency is divided to 1/3 by the first programmable divider to receive a VHF high-band TV signal, and the local oscillation signal output from the local oscillator is applied to the first mixer after its frequency is divided to 1/5 by the first programmable divider to receive a VHF low-band TV signal.
    • 电视信号接收调谐器,由于本地振荡器的数量减少而尺寸小且便宜。 在电视信号接收调谐器中,从本地振荡器输出的本地振荡信号通过第一可编程分频器(16)直接施加到第一混频器(9),以接收UHF TV信号,从本地振荡器输出的本地振荡信号 在其频率被第一可编程分频器分频为1/3后被施加到第一混频器以接收VHF高频带TV信号,并且从本地振荡器输出的本地振荡信号在其频率被施加到第一混频器之后被施加到第一混频器 通过第一个可编程分频器分频为1/5,以接收VHF低频电视信号。 <图像>
    • 2. 发明公开
    • 텔레비젼신호 수신튜너
    • 使用单个本地振荡器输出宽带信号的电视调谐器
    • KR1020020027240A
    • 2002-04-13
    • KR1020010061185
    • 2001-10-04
    • 알프스 덴키 가부시키가이샤
    • 스즈키다케오오사다시게루
    • H04N5/50
    • H03J5/244H03J1/0041H03J3/32H03J5/24H03L7/0805H03L7/099
    • PURPOSE: A TV tuner capable of outputting a wide band signal by using a single local oscillator is provided to reduce the size of a TV tuner by reducing the number of local oscillator and to realize a low price of the TV tuner. CONSTITUTION: In a TV signal receiving tuner, a local oscillation signal output from a local oscillator(19) is directly applied to a first mixer(9) through a first programmable divider(16) to receive a UHF TV signal. The local oscillation signal output from the local oscillator is applied to the first mixer after the frequency is divided to 1/3 by the first programmable divider to receive a VHF high-band TV signal. The local oscillation signal output from the local oscillator is applied to the first mixer after the frequency is divided to 1/5 by the first programmable divider to receive a VHF low-band TV signal.
    • 目的:提供能够通过使用单个本地振荡器输出宽带信号的电视调谐器,通过减少本地振荡器的数量并实现TV调谐器的低价格来减小TV调谐器的尺寸。 构成:在电视信号接收调谐器中,从本地振荡器(19)输出的本地振荡信号通过第一可编程分频器(16)直接施加到第一混频器(9),以接收UHF电视信号。 从本地振荡器输出的本地振荡信号在频率被第一可编程分频器分频为1/3之后被施加到第一混频器,以接收VHF高频电视信号。 在通过第一可编程分频器将频率分频为1/5之后,从本地振荡器输出的本地振荡信号施加到第一混频器,以接收VHF低频电视信号。
    • 3. 发明公开
    • 주파수 매핑 근사 함수를 이용한 광대역 주파수 자동 채널선택 장치 및 그 방법
    • 使用频率映射逼近函数选择宽带频率自动通道的装置和方法
    • KR1020010046208A
    • 2001-06-05
    • KR1019990049890
    • 1999-11-11
    • 한국전자통신연구원
    • 정영준김재영강성춘최재익박재홍
    • H04N7/015
    • H03J1/005H03D7/163H03J1/0075H03J3/32H03J5/244H04B1/28
    • PURPOSE: An apparatus and method for selecting a broadband frequency automatically channel using a frequency mapping approximation function is provided to select a broadband frequency channel automatically by using a frequency mapping function. CONSTITUTION: A frequency band separating unit(510) comprises an input band passing wave filter(501) and a positive tracking wave filter and automatically gaining controller(502). The frequency band separating unit(510) passes broadcasting channels(CH2-CH69) of 50-810 MHz frequency band and the channels including cable TV channels and removes non-television signals inputted as a video signal band(more 920MHz). A frequency upward adjusting unit(520) comprises a frequency up-converter(503), a low band passing wave filter(504), an IF amplifier(505) and a band passing wave filter(506). The frequency up-converter(503) performs the first frequency upward conversion of an input wireless frequency signal into an intermediate frequency of 944 MHz. A frequency downward adjusting unit(530) comprises a frequency down-converter(507), a low band passing wave filter(508) and a final terminal IF amplifier(509). The frequency down-converter(507) performs the frequency downward conversion of an input IF signal(944 MHz) into the final IF(44 MHz). The low band passing wave filter(508) and the final terminal IF amplifier(509) suppress spurious components generated by a mixer and amplify a signal. A tuner control unit(550) comprises a tuning micro controller(513), an EEPROM(514), a digital/analog converter(D/A)(515), a calculation amplifier(516) and a driver amplifier(517). The tuning micro controller(513) forms an interface with a frequency channel selection information introduced by the external IIC-BUS signal.
    • 目的:提供一种使用频率映射近似函数选择宽带频率自动通道的装置和方法,以通过使用频率映射函数自动选择宽带频道。 构成:频带分离单元(510)包括输入带通滤波器(501)和正跟踪波滤波器,并且自动获得控制器(502)。 频带分离单元(510)通过50-810MHz频带的广播频道(CH2-CH69)和包括有线电视频道的频道,并去除作为视频信号频带(更多的920MHz)输入的非电视信号。 频率上调单元(520)包括上变频器(503),低频带通滤波器(504),IF放大器(505)和带通滤波器(506)。 上变频器(503)执行输入无线频率信号的第一频率向上转换为944MHz的中频。 频率向下调整单元(530)包括频率下变频器(507),低频带通滤波器(508)和最终终端IF放大器(509)。 降频转换器(507)将输入IF信号(944MHz)的频率向下转换成最终IF(44MHz)。 低通滤波器(508)和最终终端IF放大器(509)抑制由混频器产生的杂散分量并放大信号。 调谐器控制单元(550)包括调谐微控制器(513),EEPROM(514),数/模转换器(D / A)(515),计算放大器(516)和驱动放大器(517)。 调谐微控制器(513)形成具有由外部IIC-BUS信号引入的频道选择信息的接口。
    • 5. 发明授权
    • 주파수 매핑 근사 함수를 이용한 광대역 주파수 자동 채널선택 장치 및 그 방법
    • 使用近似频率映射功能的宽带自动频道选择的DTV调谐器装置和方法
    • KR100353861B1
    • 2002-09-26
    • KR1019990049890
    • 1999-11-11
    • 한국전자통신연구원
    • 정영준김재영강성춘최재익박재홍
    • H04N7/015
    • H03J1/005H03D7/163H03J1/0075H03J3/32H03J5/244H04B1/28
    • 1. 청구범위에기재된발명이속하는기술분야본 발명은광대역주파수의자동채널선택장치및 그방법과상기방법을실현시키기위한프로그램을기록한컴퓨터로읽을수 있는기록매체에관한것임. 2. 발명이해결하고자하는기술적과제본 발명은주파수매핑함수를이용하여광대역주파수채널을자동으로선택하기위한자동채널선택장치및 그방법과상기방법을실현시키기위한프로그램을기록한컴퓨터로읽을수 있는기록매체를제공하는데그 목적이있음. 또한, 본발명은튜닝주파수의특성이변하는경우에도주파수를보정하여광대역주파수채널을자동적으로선택할수 있는자동채널선택장치및 그방법과상기방법을실현시키기위한프로그램을기록한컴퓨터로읽을수 있는기록매체를제공하는데그 목적이있음. 3. 발명의해결방법의요지본 발명은주파수매핑근사함수를이용한광대역주파수자동채널선택장치에있어서, 수신되는주파수중 불필요한대역외주파수를제거하고남은주파수를동조전압의제어에따라대역별로분할하기위한주파수대역분할수단; 상기주파수대역분할수단을통과한상기주파수를선택하고자하는대역의중간주파수로변환하기위하여이중주파수변환을수행하는주파수변환수단; 상기주파수변환수단의이중주파수변환을제어하기위한제 1 제어수단; 및외부로부터입력되는채널선택신호에따라이미저장되어있는주파수특성정보중 상기채널에해당하는주파수정보를상기제 1 제어수단에제공하며, 해당주파수대역의동조전압을상기주파수대역분할수단에제공하기위한제 2 제어수단을포함함. 4. 발명의중요한용도본 발명은디지털텔레비젼(DTV) 등에이용됨.