JPS6413802A - Level adjusting circuit - Google Patents

Level adjusting circuit

Info

Publication number
JPS6413802A
JPS6413802A JP17059487A JP17059487A JPS6413802A JP S6413802 A JPS6413802 A JP S6413802A JP 17059487 A JP17059487 A JP 17059487A JP 17059487 A JP17059487 A JP 17059487A JP S6413802 A JPS6413802 A JP S6413802A
Authority
JP
Japan
Prior art keywords
signal
pilot signal
gain
amplifiers
fed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP17059487A
Other languages
Japanese (ja)
Other versions
JP2623577B2 (en
Inventor
Riyuuichirou Kawai
Akihiko Ikeda
Yoshinaga Furuya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP17059487A priority Critical patent/JP2623577B2/en
Publication of JPS6413802A publication Critical patent/JPS6413802A/en
Application granted granted Critical
Publication of JP2623577B2 publication Critical patent/JP2623577B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To suppress the variation in a gain among channels by adding a pilot signal varying inversely proportional to the gain of a gain control amplifier receiving a main control signal to an input signal. CONSTITUTION:A pilot signal from a pilot signal generating circuit 11 is fed to an amplifier 12, from which a pilot signal varying inversely proportional to the gain of an amplifier 4a controlled by a signal fed from a terminal 9 is formed. The pilot signal is added to the input signal by an adder 2 and fed to amplifiers 4a, 4b, 4c via signal processing circuits 3a, 3b, 3c of each channel. Then the level of the pilot signal in the output signal of the amplifiers is detected by pilot signal detection circuits 6a, 6b, 6c and the gain of the amplifiers 4b, 4c is controlled based on the difference between the output of the circuit 6a obtained by the comparators 7, 8 and being a reference and the output of the other circuits 6b, 6c.
JP17059487A 1987-07-08 1987-07-08 Level adjustment circuit Expired - Fee Related JP2623577B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17059487A JP2623577B2 (en) 1987-07-08 1987-07-08 Level adjustment circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17059487A JP2623577B2 (en) 1987-07-08 1987-07-08 Level adjustment circuit

Publications (2)

Publication Number Publication Date
JPS6413802A true JPS6413802A (en) 1989-01-18
JP2623577B2 JP2623577B2 (en) 1997-06-25

Family

ID=15907734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17059487A Expired - Fee Related JP2623577B2 (en) 1987-07-08 1987-07-08 Level adjustment circuit

Country Status (1)

Country Link
JP (1) JP2623577B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6690921B1 (en) * 1999-09-01 2004-02-10 Matsushita Electric Industrial Co., Ltd. Receiving apparatus, base station apparatus using same and radio communication system
JP2007189385A (en) * 2006-01-12 2007-07-26 Mitsubishi Materials Corp Antenna device
US8564477B2 (en) 2008-03-31 2013-10-22 Kyocera Corporation High-frequency module and method of manufacturing the same, and transmitter, receiver, transceiver, and radar apparatus comprising the high-frequency module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6690921B1 (en) * 1999-09-01 2004-02-10 Matsushita Electric Industrial Co., Ltd. Receiving apparatus, base station apparatus using same and radio communication system
JP2007189385A (en) * 2006-01-12 2007-07-26 Mitsubishi Materials Corp Antenna device
US8564477B2 (en) 2008-03-31 2013-10-22 Kyocera Corporation High-frequency module and method of manufacturing the same, and transmitter, receiver, transceiver, and radar apparatus comprising the high-frequency module

Also Published As

Publication number Publication date
JP2623577B2 (en) 1997-06-25

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees