公开(公告)号：JP2007104031A

公开(公告)日：2007-04-19

申请号：JP2005287830

申请日：2005-09-30

Applicant: Sony Corp ,  ソニー株式会社

Inventor： FUJITA KOSUKE ,  MITA HIROYUKI ,  SHIMANUKI MASARU ,  MIYASHITA MASATOMO

IPC: H04B1/18 ,  H04N5/44

Abstract: PROBLEM TO BE SOLVED: To provide a technology of accurately connecting a cable for delivering terrestrial and satellite broadcast signals to inputs of a television receiver. SOLUTION: The high frequency signal processing apparatus includes first and second antenna input terminals 11, 12, a first mode wherein the first input terminal receives a terrestrial broadcast signal, the second antenna input terminal receives the satellite broadcast signal and the terrestrial broadcast signal so as to receive the terrestrial broadcast signal and the satellite broadcast signal separately, a second mode wherein the second antenna input terminal receives a mixture of the satellite broadcast signal and the terrestrial broadcast signal from the second antenna input terminal, and after the signals received from the first and second antenna input terminals are respectively amplified and mixed depending on the first or second mode, an equal distributor 24 equally distributes the resulting signal to a post-stage tuners. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供将地面和卫星广播信号的电缆准确地连接到电视接收机的输入的技术。 解决方案：高频信号处理装置包括第一和第二天线输入端子11,12，第一模式，其中第一输入端子接收地面广播信号，第二天线输入端子接收卫星广播信号和地面广播 信号，以分别接收地面广播信号和卫星广播信号;第二模式，其中第二天线输入端接收来自第二天线输入端的卫星广播信号和地面广播信号的混合，并且在接收到信号之后 从第一和第二天线输入端分别根据第一或第二模式分别放大和混合，等分配器24将所得到的信号均匀分配到后级调谐器。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JPH06291694A

公开(公告)日：1994-10-18

申请号：JP9727693

申请日：1993-03-31

Applicant: SONY CORP

Inventor： FUKUZAWA KEIJI ,  MITA HIROYUKI

IPC: H01Q15/24 ,  H04B1/16 ,  H04B1/18 ,  H04N7/20

Abstract: PURPOSE:To adjust the angle of polarization of a desired received signal in an optimum angle and to receive a desired channel without disturbance by controlling the polarization angle adjuster of an antenna part so that the level of a intersecting-polarized wave signal becomes minimum for the desired received signal. CONSTITUTION:A channel selecting circuit 5 selects a signal which has a plane of polarization orthogonally intersecting to that of the desired received signal as an IF signal from the polarization adjuster 3 of the antenna part 2. The selected signal is supplied to a control part 7 through a BPF 6. The control part 7 consists of a signal level detector 8 and an indicator 9 for use of detection output level and displays the level of the intersecting-polarized wave signal. A receiving user adjusts the extent of the rotation of the polarization adjuster 3 while looking at the display level so that the level becomes minimum. In another way, an automatic adjusting circuit is incorporated in the indicator 9 and a control signal is supplied to the polarization adjuster 3 so that the intersecting-polarized wave signal level becomes minimum at all times.

公开(公告)号：JPH0681314B2

公开(公告)日：1994-10-12

申请号：JP1400885

申请日：1985-01-28

Applicant: SONY CORP

Inventor： OSADA YASUO ,  YAMAMOTO TSUGUO ,  MITA HIROYUKI

IPC: H04N7/20 ,  H04B7/185

公开(公告)号：JPH0528533B2

公开(公告)日：1993-04-26

申请号：JP18241384

申请日：1984-08-31

Applicant: SONY CORP

Inventor： OSADA YASUO ,  TSURUMARU SHINOBU ,  KAJIWARA TADASHI ,  MITA HIROYUKI ,  HIDESHIMA YASUHIRO

IPC: H04B1/74 ,  H04B7/155

公开(公告)号：JPH02305087A

公开(公告)日：1990-12-18

申请号：JP12509689

申请日：1989-05-18

Applicant: SONY CORP

Inventor： MITA HIROYUKI ,  KOBAYASHI KOZO

IPC: H04N7/20 ,  H03D3/24

Abstract: PURPOSE:To control threshold extension by controlling the output level of an automatic gain control(AGC) circuit. CONSTITUTION:When the reference signal of an AGC control circuit 17 is varied, the output level control signal of the automatic gain control circuit 14 is controlled according to the variation, so the input level to an FM demodulating circuit 16 is varied. Therefore, if C/N decreases, the reference signal of the AGC control circuit 17 is varied so that the input level to the FM demodulating circuit 16 is lowered. Consequently, the loop gain of a PLL(phase locked loop) becomes small and the band of a low-pass filter 19 becomes narrow. Consequently, the threshold extension is provided and what is called a killifish noise is improved.

公开(公告)号：JPS63292790A

公开(公告)日：1988-11-30

申请号：JP12654587

申请日：1987-05-23

Applicant: SONY CORP

Inventor： MITA HIROYUKI ,  KOBAYASHI KOZO

IPC: H04N5/21 ,  H04N7/045 ,  H04N7/20

Abstract: PURPOSE:To obtain a high dispersal removing ratio by synchronizing with a dispersal signal, forming the signal of substantially the same amplitude as the dispersal signal and cancelling a dispersal component superimposed on a demodulated output. CONSTITUTION:A dispersal signal removing circuit synchronizes with the dispersal signal VD superimposed on the demodulated output of a satellite broadcasting receiver and is provided with a cancel signal forming circuit (band pass filter 21, PLL circuit 22, attenuator 23) for generating a cancel signal (d) of an opposite phase to or the same phase and substantially the same amplitude as the dispersal signal VD, and a cancel circuit 20 for adding or subtracting and connecting the demodulated output (a) and the cancel signal (d) and removing the dispersal signal VD in the demodulated output (a). Thereby, the dispersal removing ratio is obtained extending from high C/N to low C/N.

公开(公告)号：JPS6160026A

公开(公告)日：1986-03-27

申请号：JP18241384

申请日：1984-08-31

Applicant: Sony Corp

Inventor： OSADA YASUO ,  TSURUMARU SHINOBU ,  KAJIWARA TADASHI ,  MITA HIROYUKI ,  HIDESHIMA YASUHIRO

IPC: H04B1/74 ,  H04B7/155

Abstract: PURPOSE: To attain the reception of a transmission mode from which the least minimum information is transmitted even with the deteriorated C/N ratio by switching automatically a loop filter of an FM demodulator comprising a PLL or the like depending on the reception mode.
CONSTITUTION: The FM modulation wave of a video signal and a voice or a data signal is transmitted in the 1st transmission mode, and the signals above except the video signal is transmitted at the 2nd transmission mode. Then the FM demodulation output is given to an input terminal 19 and a synchronizing signal is extracted from the synchronous separator circuit 23 only at the 1st mode. An output of the circuit 23 is fed to a switching signal generating circuit 25, a switch circuit 24 and a circuit 29 are controlled by using a reception mode switching signal of the circuit 25, the switch circuit 24 and the circuit 29 are controlled by using the reception mode switching signal of the circuit 25 and the switching signal is fed to the FM demodulator as the switching signal of a loop filter. When no synchronizing signal is extracted from the circuit 23, the switch circuits 24, 29 are controlled by using a switching signal of the circuit 25 to attain the 2nd mode state. In this case, the output of the circuit 25 switches the loop filter of the FM demodulator 26 to attain the characteristic for the 2nd mode.
COPYRIGHT: (C)1986,JPO&Japio

Abstract translation: 目的：通过根据接收模式自动切换包括PLL等的FM解调器的环路滤波器，来实现甚至通过劣化的C / N比来发送最小最小信息的传输模式的接收。 构成：视频信号和语音或数据信号的FM调制波以第1发送模式发送，除了视频信号以外的信号以第2发送方式发送。 然后，FM解调输出被提供给输入端子19，并且仅在第一模式下从同步分离器电路23提取同步信号。 电路23的输出被馈送到开关信号发生电路25，通过使用电路25的接收模式切换信号来控制开关电路24和电路29，开关电路24和电路29通过使用 将电路25的接收模式切换信号和切换信号作为环路滤波器的切换信号馈送到FM解调器。 当没有从电路23提取同步信号时，通过使用电路25的切换信号来控制开关电路24,29以达到第二模式状态。 在这种情况下，电路25的输出将FM解调器26的环路滤波器切换成第二模式的特性。