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1. 发明专利

JPH0160959B2 失效
公开(公告)号：JPH0160959B2
公开(公告)日：1989-12-26
申请号：JP9798983
申请日：1983-06-03
申请人： HITACHI LTD
发明人： ASABA YOJI , SHINAGAWA MITSUHISA , MATSUMOTO TOMOZO , SAITO SHIGERU , MOTOYAMA IKUO
IPC分类号： H05K3/46 , B32B9/00 , B32B15/04 , H04B1/06

3. 发明专利

JPS628040B2 失效
公开(公告)号：JPS628040B2
公开(公告)日：1987-02-20
申请号：JP9387781
申请日：1981-06-19
申请人： HITACHI LTD
发明人： KANAI FUMIO , SHINAGAWA MITSUHISA , MATSUMOTO TOMOZO
IPC分类号： H05K3/46 , H01G4/12 , H01G4/30 , H05K1/00 , H05K1/03 , H05K1/11 , H05K1/16 , H05K1/18

7. 发明专利

JPS59193093A Wet type multilayer ceramic board 失效
标题翻译：湿式多层陶瓷板
公开(公告)号：JPS59193093A
公开(公告)日：1984-11-01
申请号：JP6556783
申请日：1983-04-15
申请人： Hitachi Ltd
发明人： MOTOYAMA IKUO , SHINAGAWA MITSUHISA , MATSUMOTO TOMOZOU , SAITOU SHIGERU , ASABA YOUJI
IPC分类号： B32B15/04 , B32B9/00 , H05K3/46

9. 发明专利

JPS54104218A INPUT TUNER CIRCUIT 失效
公开(公告)号：JPS54104218A
公开(公告)日：1979-08-16
申请号：JP1043178
申请日：1978-02-03
申请人： HITACHI LTD
发明人： SHINAGAWA MITSUHISA , NAGASHIMA TOSHIO , SAITOU TAKESHI
IPC分类号： H04B1/18 , H03J5/24 , H04B1/26
摘要： PURPOSE:To obtain a tuner circuit sharing for a tuner which can receive radio waves of UHF and VHF bands without switching its circuit element, by using a two-point tuner circuit with two different resonance frequencies for the tuner of a TV receiver, etc. CONSTITUTION:Coils 20, and 21 and 22 as the 1st and 2nd inductance elements are connected in series, the 1st capacitor 24 is connected in parallel to this circuit, and the 2nd capacitor 18 is connected in parallel to the 2nd coils 21 and 22, so that the two-point tuner circuit can be constituted which tunes to two different frequencies at the same time. Then, the capacity of capacitor 18 is varied by a voltage from tuning-voltage application terminal 16 to make it possible to receive signals of two frequency bands or more. Then, frequency input terminal 12 is connected to the connection point between capacitor 24 and coil 20 via capacitor 25, and this connection point is connected to signal output terminal 13 directly or via coupling capacitor 26 and high-frequency amplifying FET17.

10. 发明专利

JPS5428511A VHFFUHF COMBINATION TUNER 失效
公开(公告)号：JPS5428511A
公开(公告)日：1979-03-03
申请号：JP9341877
申请日：1977-08-05
申请人： HITACHI LTD
发明人： NAGASHIMA TOSHIO , MATSUURA SHIGEO , SHINAGAWA MITSUHISA
IPC分类号： H03J5/24 , H04B1/26
摘要： PURPOSE:To obtain a combination tuner featuring a low cost and high performance, by omitting the high-frequency amplifying part from the UHF electronic tuner of the VHF-UHF combination tuner and making the high-frequency amplifying part of VHF double the function of the high-frequency amplifying part of UHF.

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