专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明专利

JP2006086685A Car radio receiver with am broadcast automatic channel selection sensitivity setting function 审中-公开
标题翻译：无线广播接收机，具有广播自动频道选择灵敏度设置功能
公开(公告)号：JP2006086685A
公开(公告)日：2006-03-30
申请号：JP2004267911
申请日：2004-09-15
申请人： Sanyo Automedia Sdn Bhd , Sanyo Electric Co Ltd , サンヨー・オートメディア・センディリアン・バハド , 三洋電機株式会社
发明人： MIURA KEIJI , SEKIGUCHI YOSHITAKA , SHIMAMOTO NAOKI
IPC分类号： H04B1/16 , H03J7/20
摘要： PROBLEM TO BE SOLVED: To provide a car radio receiver with an AM broadcast automatic channel selection sensitivity setting function for automatically switching channel selection sensitivity in accordance with a state of a radio wave.
SOLUTION: The radio receiver is provided with: a signal strength judgment means for judging the signal strength of an AM broadcast station on the basis of an output control voltage V of an RF AGC 3; a low sensitivity seek mode setting means for automatically setting a low sensitivity seek mode LO to the receiver when the output control voltage V exceeds a prescribed reference value V1 in the case of seeking; an ordinary sensitivity seek setting means for automatically setting an ordinary sensitivity seek mode DX to the receiver when the output control voltage V is the prescribed reference value V1 or below in the case of seeking; a high sensitivity seek mode setting means for automatically setting a high sensitivity seek mode SDX to the receiver when the number of broadcast stations N selected by one cyclic seek within reception bands is a prescribed number of stations N1 or below; and a channel selection quality hold means for carrying out seeking so as not to stop the channel selection in the case of seeking when a noise level included in an output sound signal S extracted by a filter 5 exceeds a prescribed level.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有AM广播自动频道选择灵敏度设置功能的车载无线电接收机，用于根据无线电波的状态自动切换频道选择灵敏度。解决方案：无线电接收机设置有：信号强度判断装置，用于根据RF AGC 3的输出控制电压V来判断AM广播电台的信号强度; 低灵敏度寻道模式设定装置，用于在寻找的情况下当输出控制电压V超过规定的参考值V1时自动将低灵敏度寻道模式LO设置到接收机; 普通灵敏度寻道设定装置，用于在寻找的情况下当输出控制电压V为规定的参考值V1或更低时自动将普通灵敏度搜索模式DX设置到接收机; 当在接收频带内由一个循环搜索选择的广播站N的数量是规定数量的站N1或更低时，自动将高灵敏度寻道模式SDX设置到接收机的高灵敏度搜索模式设置装置; 以及频道选择质量保持装置，用于在由滤波器5提取的输出声音信号S中包括的噪声电平超过规定电平时进行搜索，以便在寻找的情况下不停止频道选择。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2001024483A AUTOMATIC TUNING DEVICE 失效
公开(公告)号：JP2001024483A
公开(公告)日：2001-01-26
申请号：JP19560499
申请日：1999-07-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMADA YUTAKA , KAWASHIMA ICHIRO
IPC分类号： H03J7/20 , H04B1/26
摘要： PROBLEM TO BE SOLVED: To shorten a time until defining a communication frequency by intermediately tuning the next frequency without processing after digital modulation concerning a frequency discriminated to have not reached a regulated level yet by an IF level discriminating circuit. SOLUTION: A tuning control circuit 2 sends a frequency control signal to a tuning circuit 1 for tuning a frequency. The circuit 1 which has received the frequency control signal converts the frequency of a received RF signal to an IF band. The circuit 1 transmits the converted IF signal to an IF level discrimination circuit 3 and a digital demodulation circuit 4. Since the frequency is non-signal, the IF signal of the output of the circuit 1 is also non-signal. When the circuit 3 detects that the IF level of the IF signal inputted from the circuit 1 has not reached a regulated level yet, the circuits 3 sends the detecting result to the circuit 2 to tune another frequency.

4. 发明专利

JPH11112399A FREQUENCY SELECTION-TYPE REPEATING METHOD AND ITS DEVICE FOR MOBILE COMMUNICATION 失效
公开(公告)号：JPH11112399A
公开(公告)日：1999-04-23
申请号：JP26464597
申请日：1997-09-29
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAZAKI MASAKATSU
IPC分类号： H03J7/20 , H03J5/02 , H04B7/15 , H04B7/26
摘要： PROBLEM TO BE SOLVED: To eliminate the need of going to a repeating device and executing resetting even if a channel used in a base station is changed in the repeating device for a dead zone. SOLUTION: A part of a received radio wave from a mobile station is branched in a directional coupler 29. The frequency of the received radio wave is detected in a frequency detection circuit 30. The received frequency is information to MPU(micro processor unit) 19. MPU 19 refers to RAM 21 and sets the frequency to synthesizers for frequency conversion 14, 18, 23 and 27 so that an incoming frequency channel and an outgoing channel corresponding to the channel are repeated.

5. 实用新型

JPH0230641U 失效
公开(公告)号：JPH0230641U
公开(公告)日：1990-02-27
申请号：JP6850989
申请日：1989-06-12
IPC分类号： H03J7/20

6. 发明专利

JPH0149053B2 失效
公开(公告)号：JPH0149053B2
公开(公告)日：1989-10-23
申请号：JP7596783
申请日：1983-04-28
申请人： SANYO ELECTRIC CO
发明人： FUJAMA HITOHIRO
IPC分类号： H03J7/20 , H03J5/00 , H03J5/02

7. 发明专利

JPS6348452B2 失效
公开(公告)号：JPS6348452B2
公开(公告)日：1988-09-29
申请号：JP3269381
申请日：1981-03-06
申请人： SANYO ELECTRIC CO
发明人： YOSHIDA KENJI , TERAMI KOJI
IPC分类号： H03J7/18 , H03J7/20 , H04N5/44

8. 发明专利

JPS59194530A Channel selecting device 失效
标题翻译：频道选择设备
公开(公告)号：JPS59194530A
公开(公告)日：1984-11-05
申请号：JP7035683
申请日：1983-04-20
申请人： Matsushita Electric Ind Co Ltd
发明人： NAGAOKA JIYUNJI , YAMADA TADASHI , IMAI KIYOSHI , KAWASHIMA KAZUMI
IPC分类号： H03J7/20 , H03J1/00
CPC分类号： H03J1/0008
摘要： PURPOSE:To write channel selecting information for TV and FM broadcasting in a memory by dividing the range from minimum to maximum frequency of FM broadcasting into every prescribed frequency range by a method corresponding to channels of television to execute auto-searching. CONSTITUTION:When a preset mode switch in a mode alternation switch 5 and an auto-search starting switch 4 on a TV set key 6 are depressed, a microcomputer 7 discriminates the key operation and actuates a channel selecting circuit including a TV tuner 11 and a TVIF circuit 12 through a switching circuit 10 to start searching from the minimum frequency of TV broadcasting radio waves and write the channel selecting information in an MNOS memory 8 every detection 13 of the broadcasting radio wave. After completing search up to the maximum, the circuit 10 is switched, the FM broadcasting is divided into every 100kHz range and searched by the FM tuner 14 and the FMIF circuit 12, and every detection 16 of the FM broadcasting, the channel selecting information is written in the memory 8. After completing search up to the maximum frequency, the channel is received by the information written in the memory 8.
摘要翻译：目的：通过对应于电视频道执行自动搜索的方法，将从FM广播的最小频率到最大频率的频率范围分配到每个规定的频率范围内，在存储器中写入TV和FM广播的频道选择信息。构成：当在电视机键6上的模式交替开关5和自动搜索启动开关4中的预设模式切换被按下时，微计算机7区分键操作，并且启动包括TV调谐器11和 TVIF电路12通过切换电路10从电视广播无线电波的最小频率开始搜索，并且在广播无线电波的每个检测13中将通道选择信息写入MNOS存储器8。在完成最大搜索之后，电路10被切换，FM广播被分成每100kHz的范围并由FM调谐器14和FMIF电路12进行搜索，并且FM广播的每个检测16，频道选择信息是写入存储器8.在完成搜索到最大频率之后，通过写入存储器8的信息接收信道。

9. 实用新型

JPS59132240U JPS59132240U - 失效
公开(公告)号：JPS59132240U
公开(公告)日：1984-09-05
申请号：JP2606283
申请日：1983-02-22
IPC分类号： H03J7/18 , H03J7/20

10. 发明专利

JPS5926130B2 JPS5926130B2 - 失效
公开(公告)号：JPS5926130B2
公开(公告)日：1984-06-25
申请号：JP6479876
申请日：1976-05-31
申请人： Sanyo Electric Co
发明人： IMAMURA EIGO
IPC分类号： H03J7/28 , H03J5/00 , H03J7/20 , H04B1/06 , H04B1/16 , H04B1/26
CPC分类号： H03J1/045

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式