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11. 发明授权

EP0963110B1 Frequenzumsetzungseinrichtung für ein Fernsehsignalgemisch 有权
标题翻译：用于电视信号频率变换装置
公开(公告)号：EP0963110B1
公开(公告)日：2005-11-09
申请号：EP99109693.4
申请日：1999-05-17
申请人： Micronas GmbH
发明人： Fiesel, Hans, Dipl.-Ing.
IPC分类号： H04N5/455
CPC分类号： H04N5/4446

12. 发明公开

EP1542470A1 A digital cable receiver 审中-公开
标题翻译：数码卡拉OK
公开(公告)号：EP1542470A1
公开(公告)日：2005-06-15
申请号：EP04105521.1
申请日：2004-11-04
申请人： Samsung Electronics Co., Ltd.
发明人： Lim, Sang-min , Choi, Young-ho
IPC分类号： H04N7/173 , H04N7/10
CPC分类号： H04N5/4446 , H04N5/4401 , H04N21/4181 , H04N21/42607 , H04N21/4348 , H04N21/6118
摘要： A digital cable receiver capable of improving reception performance of an additional signal in an out-of-band channel and a method of receiving the additional signal. The digital cable receiver can include an out-of-band filter to output the out-of-band channel, a band splitting unit to split the out-of-band channel into a predetermined number of frequency bands, a band selection unit to select a frequency band carrying the additional signal out of the split predetermined number of frequency band, a down-converter to down convert the additional signal in the selected frequency band into a predetermined intermediate frequency signal, and a control unit to control the band selection unit and the down-converter in cooperation with the cable card. Accordingly, the digital cable receiver can selectively pass only the frequency band carrying the additional signal out of the out of band channel using the information on the frequency band carrying the additional signal in the out-of-band channel obtained by cooperating with the cable card and can down-convert the selected frequency band, thereby eliminating interference with other channels adjacent to the additional signal.
摘要翻译：一种能够提高带外信道中的附加信号的接收性能的数字有线接收机以及接收附加信号的方法。数字电缆接收机可以包括输出带外信道的带外滤波器，将带外信道划分成预定数量的频带的频带分割单元，选择频带携带分离的预定数量的频带中的附加信号的频带，下变频器将所选频带中的附加信号下变频为预定的中频信号;以及控制单元，控制频带选择单元和下变频器与电缆卡合作。因此，数字有线电视接收机可以选择性地仅使用携带附加信号的频带从带外信道中使用携带附加信号的频带上的信息，通过与有线电视卡合作获得的带外信道并且可以对所选择的频带进行下变频，从而消除与附加信号相邻的其他信道的干扰。

13. 发明公开

EP1217729A3 Broadcast data receivers and adaptive gain control thresholds to optimise received signal quality 审中-公开
标题翻译：广播数据接收器和自适应Verstärkungsregelungsschwellwerte以优化接收信号质量
公开(公告)号：EP1217729A3
公开(公告)日：2004-10-27
申请号：EP01309758.9
申请日：2001-11-20
申请人： Pace Micro Technology PLC
发明人： Rowe, James , Garrett, Peter
IPC分类号： H03G3/30 , H03G3/00 , H04N5/44
CPC分类号： H04N5/4446 , H04N5/4401 , H04N5/46 , H04N21/426 , H04N21/4383 , H04N21/44209
摘要： The invention relates to a method for optimising signal reception for a broadcast data receiver. Broadcast Data Receivers are used to receive digital data transmitted from a remote location, process the same and then generate video, audio and auxiliary services. However the Broadcast data receiver is typically located in a household and can be susceptible to general and/or local conditions which affect the reception of the data signals at different frequencies. The present invention provides a method for optimising the signal reception at the broadcast data receiver location by allowing the analysis of amplitude gain control levels of the broadcast data receiver and then selecting the amplitude gain control levels and/or other levels which optimise the quality of the received signal at each frequency.
摘要翻译：本发明涉及一种用于广播数据接收器优化信号接收的方法。广播数据接收器用于接收反从远程位置mitted数字数据，处理相同的，然后生成的视频，音频和辅助服务。然而，广播数据接收器通常位于一个家庭和可能易受通用和/或局部以不同的频率影响数据信号的接收条件。本发明提供了一种用于通过允许广播数据接收器的振幅的增益控制水平的分析优化在广播数据接收器位置的信号的接收，然后选择振幅增益控制水平和/或其他级别哪优化的质量在每个频率上接收的信号。

14. 发明公开

EP1464166A1 TELEVISION SIGNAL RECEIVER WITH A UNIVERSAL OUTPUT FOR SURFACE-ACOUSTIC WAVE FILTERS OF DIFFERENT TYPES 审中-公开
标题翻译：用万能输出各种类型表面波滤波器电视信号接收器
公开(公告)号：EP1464166A1
公开(公告)日：2004-10-06
申请号：EP02790624.7
申请日：2002-12-19
申请人： Koninklijke Philips Electronics N.V. , Philips Corporate Intellectual Property GmbH
发明人： VAN DER WIJST, Hendricus, M. , BRESSAU, Ernst
IPC分类号： H04N5/44
CPC分类号： H04N5/4446 , H04N5/46 , H04N21/426
摘要： The invention relates to a television signal receiver comprising a radio-frequency tuner (1) and at least one subsequent surface-acoustic wave filter (2), in which the radio-frequency tuner (1) filters a RF television signal applied to its input and converts it to an intermediate-frequency television signal which is coupled to the surface-acoustic wave filter (2). The RF tuner (1) has at least one output stage (16) which supplies the IF television signal converted to the intermediate frequency. The output stage (16) is directly connected to an output (6) of the RF tuner (1), while a switch (10) is associated with it, by means of which switch the IF television signal is supplied to a second output (8). A further switch (11) is associated with the second output (8), by means of which switch the associated output (8) is switchable to a fixed reference potential. The RF tuner (1) precedes at least one surface-acoustic wave filter (2), in which each time a first input (12) of the surface-acoustic wave filter (2) is coupled to a first output (6) of the RF tuner (1), and a second input (13) of the surface-acoustic wave filter (2) is coupled to the second output (8) of the RF tuner (1) via the first switch (10), and, for switching the filter characteristic of the television signal receiver, alternately the second input (13) of the surface-acoustic wave filter (2) can be coupled to the same IF television signal by means of the associated switch (10).

15. 发明公开

EP1221258A4 SINGLE-CHIP DIGITAL CABLE TV/CABLE MODEM TUNER IC 审中-公开
标题翻译：集成的单CUP调谐器电路FOR CABLE TV / CABLE MODEM
公开(公告)号：EP1221258A4
公开(公告)日：2004-03-24
申请号：EP00920134
申请日：2000-04-04
申请人： MAXIM INTEGRATED PRODUCTS
发明人： MARTIN TOMASZ
IPC分类号： H03D7/16 , H04N5/44 , H03J1/00
CPC分类号： H04N5/4446 , H03D7/161 , H03D7/165
摘要： A television receiver (200) includes first mixer (208) having first input for inputting signal. The first mixer (208) further includes a second input for receiving a first reference signal having a first operating frequency. The first mixer (208) outputs an intermediate frequency signal having a frequency greater than at least one frequency in the predetermined frequency range of input signal. A filter (210) filters the intermediate frequency signal. A phase shifting network (212) includes an input for receiving a second operating frequency reference signal, and a pair of outputs for outputting a pair of quadrature frequency reference signals which substantially equal to the second operating frequency. A pair of second mixers (214) each have first input coupled to the filter and second input coupled to the outputs of the phase shifting network. The second mixer (214) generate output signals that are in quadrature and at a baseband frequency where is coupled to a pair of low-pass filters (254).

16. 发明授权

EP0847630B1 TV/FM TUNER FOR MULTIMEDIA APPLICATIONS 失效
标题翻译： TV / FM调谐器多媒体
公开(公告)号：EP0847630B1
公开(公告)日：2004-03-17
申请号：EP96940065.4
申请日：1996-12-11
申请人： Koninklijke Philips Electronics N.V.
发明人： BREKELMANS, Johannes, Hubertus, Antonius
IPC分类号： H04B1/16
CPC分类号： H04N5/44 , H03J5/244 , H04B1/18 , H04B1/26 , H04N5/4446 , H04N5/60
摘要： A receiver for receiving reception signals of a first type, for example TV signals, and reception signals of a second type, for example FM-radio signals, is described. The receiver may be used in multimedia applications. In the receiver, an input section TVIN, FMIN, SWIN comprises at least two inputs TVIN, FMIN to which reception signals can be applied. One input TVIN may, for example, be coupled to a cable network via which reception signals are distributed. The other input FMIN may, for example, be used to plug-in a simple wire antenna. In many cases such a wire antenna will be sufficient to receive on-air reception signals with acceptable quality. The invention takes into consideration that on-air reception signals may not always be offered by the cable network. With at least two inputs TVIN, FMIN, there is flexibility of reception.

17. 发明公开

EP1160980A3 Intermediate frequency circuit of digital television tuner having flat transmission characteristic in intermediate frequency band 审中-公开
标题翻译：在中间频带的扁平传输特性的数字电视调谐器的中频电路
公开(公告)号：EP1160980A3
公开(公告)日：2004-01-02
申请号：EP01304511.7
申请日：2001-05-23
申请人： ALPS ELECTRIC CO., LTD.
发明人： Ogasawara, Yutaka, C/o Alps Electric Co., Ltd.
IPC分类号： H03J1/00 , H03F3/191
CPC分类号： H04N5/4446 , H03F3/191 , H03J1/00 , H04N5/4401 , H04N21/4263
摘要： Disclosed is an intermediate frequency circuit of a digital television tuner having a flat transmission characteristic in an intermediate frequency band and in which a transistor is prevented from being destroyed by a shock wave such as static electricity applied on the output side. This intermediate frequency circuit has: a transistor (2) for amplifying a television signal in an intermediate frequency band; a low-pass filter (5) provided between a collector of the transistor and an output terminal; and a parallel tuning circuit (3) provided between the collector of the transistor and the ground. Each of a cutoff frequency of the low-pass filter and a tuning frequency of the parallel tuning circuit is set to be equal to or higher than the intermediate frequency band.

18. 发明公开

EP1104183A3 Receiving device, and television receiver and recording and reproducing apparatus which use the device. 审中-公开
标题翻译：接收装置和电视接收机和记录和再现装置使用该设备
公开(公告)号：EP1104183A3
公开(公告)日：2003-09-17
申请号：EP00304902.0
申请日：2000-06-09
申请人： Hitachi, Ltd.
发明人： Igarashi, Yutaka, c/o Hitachi, Ltd., Int.Property , Mizukami, Hiroyuki c/o Hitachi, Ltd., Int.Property , Tamizu, Kazuhidekic/o Hitachi, Ltd., Int.Property
IPC分类号： H04N5/44 , H04N5/52 , H04N5/775 , H03F1/02
CPC分类号： H04N5/4446 , H04N5/21 , H04N5/44 , H04N5/772 , H04N21/426
摘要： A receiving device of a double superheterodyne circuit structure comprising a first and a second IF filter (50,90), a first and a second IF amplifier (60,100), a detection circuit (410), and a first and a second mixer (40,70). The receiving device is designed to control automatically its power dissipation by processing only a desired signal extracted from a composite signal having at least two signals of different levels frequency-division multiplexed therein. The detection circuit (410) detects an output of the second IF amplifier upstream of the second IF filter and controls automatically a bias current of the first IF amplifier, second mixer, and second IF amplifier in keeping with a magnitude of the detected interference. Upon increase of a level of an interfering signal with its channel next to or next but one to that of the desired signal, the detection circuit boosts the bias current. When the interfering signal level drops, the detection circuit reduces the bias current for power dissipation control.

19. 发明授权

EP0933932B1 Intermediate-frequency output circuit 有权
标题翻译：中频输出电路
公开(公告)号：EP0933932B1
公开(公告)日：2003-05-21
申请号：EP99300389.6
申请日：1999-01-20
申请人： ALPS ELECTRIC CO., LTD.
发明人： Yamamoto, Masaki , Sasaki, Michinori
IPC分类号： H04N5/44 , H03H7/01
CPC分类号： H04N5/4446 , H03H7/0115 , H03H7/1783 , H03H7/425

20. 发明公开

EP1253721A2 Method for receiving a radio frequency (RF) receiver and RF receiver 审中-公开
标题翻译： Verfahren undEmpfängerfürEmpfang von HF-Signalen
公开(公告)号：EP1253721A2
公开(公告)日：2002-10-30
申请号：EP02396052.9
申请日：2002-04-11
申请人： Nokia Corporation
发明人： Tähtinen, Ilkka
IPC分类号： H04B1/16 , H04H1/00
CPC分类号： H04N5/4446 , H04H20/42 , H04H40/18 , H04N5/4401 , H04N21/4436 , H04W52/0283 , Y02D70/168 , Y02D70/25
摘要： The invention relates generally to a method and an arrangement for receiving a radio frequency (RF) signal and an RF receiver. Particularly the invention relates to controlling and reducing power consumption in a radio receiver. The invention can advantageously be applied in receiving arrangements of radio systems, wherein information is transferred in bursts, such as a receiver of Digital Video Broadcasting (DVB) system. According to the invention, during the time between two bursts the power supply is maintained in at least in some parts of the phase locked loop PLL (240), while one or several other parts (202, 204, 224, 225, 230, 262, 270) of the receiver are turned off for a certain time period between the two bursts. The present invention enables fast tuner lock-in time and still offers a considerable saving in total power consumption of the receiver.
摘要翻译：本发明一般涉及用于接收射频（RF）信号和RF接收机的方法和装置。特别地，本发明涉及控制和降低无线电接收机中的功率消耗。本发明可以有利地应用于无线电系统的接收装置中，其中信息以突发传送，诸如数字视频广播（DVB）系统的接收机。根据本发明，在两个突发之间的时间期间，至少在锁相环PLL（240）的一些部分中保持电源，而一个或多个其他部分（202,204,224,225,230,262），270）在两个突发之间被关闭一段时间。本发明能够实现快速的调谐器锁定时间，并且仍然可以显着节省接收机的总功耗。

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