JPS5637720A - Channel divider - Google Patents

Channel divider

Info

Publication number
JPS5637720A
JPS5637720A JP11376179A JP11376179A JPS5637720A JP S5637720 A JPS5637720 A JP S5637720A JP 11376179 A JP11376179 A JP 11376179A JP 11376179 A JP11376179 A JP 11376179A JP S5637720 A JPS5637720 A JP S5637720A
Authority
JP
Japan
Prior art keywords
filter
mpu21
plus
frequency
terminal
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.)
Pending
Application number
JP11376179A
Other languages
Japanese (ja)
Inventor
Takao Takehara
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP11376179A priority Critical patent/JPS5637720A/en
Publication of JPS5637720A publication Critical patent/JPS5637720A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks

Landscapes

  • Filters And Equalizers (AREA)

Abstract

PURPOSE:To ensure an optional setting of the filter characteristics such as the filter type, the degree, the cut-off frequency and the like by using a microprocessor, at the same time securing an automatic correction for the shift of the frequency characteristics of the filter. CONSTITUTION:The 3-way system plus the type of each filter, the cut-off frequency and the degree are designated by the preset key 24. Then the data of these setting conditions are supplied to the microprocessor MPU21. The MPU21 gives an operation to each element value of the LPF4 and 11 plus the HPF5 and 6 based on the logic equation of the filter, and then delivers the result of operation to said LPFs and HPFs in the form of the element value switch signal. After this, the control signals are delivered to the switches 2 plus 7-10, and then a connection is secured between the terminal (b) and the common terminal (c) of the switch 2 as well as between each terminal (d) of switches 7-10 and the common terminal (e). Then the checking and correction is given to the characteristics of each filter. And the application becomes possible when the checking and correction is over with a connection secured between the terminals (a) and (c) of the switch 2 by the control signal supplied from the MPU21.
JP11376179A 1979-09-05 1979-09-05 Channel divider Pending JPS5637720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11376179A JPS5637720A (en) 1979-09-05 1979-09-05 Channel divider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11376179A JPS5637720A (en) 1979-09-05 1979-09-05 Channel divider

Publications (1)

Publication Number Publication Date
JPS5637720A true JPS5637720A (en) 1981-04-11

Family

ID=14620466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11376179A Pending JPS5637720A (en) 1979-09-05 1979-09-05 Channel divider

Country Status (1)

Country Link
JP (1) JPS5637720A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601892A (en) * 1983-06-18 1985-01-08 三菱電機株式会社 Method of producing metal core printed circuit board
JPS61160249A (en) * 1985-01-10 1986-07-19 松下電工株式会社 Manufacture of metallic base laminated board
US5102829A (en) * 1991-07-22 1992-04-07 At&T Bell Laboratories Plastic pin grid array package

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601892A (en) * 1983-06-18 1985-01-08 三菱電機株式会社 Method of producing metal core printed circuit board
JPH0129078B2 (en) * 1983-06-18 1989-06-07 Mitsubishi Electric Corp
JPS61160249A (en) * 1985-01-10 1986-07-19 松下電工株式会社 Manufacture of metallic base laminated board
US5102829A (en) * 1991-07-22 1992-04-07 At&T Bell Laboratories Plastic pin grid array package

Similar Documents

Publication Publication Date Title
JPS5310921A (en) Channel selection unti
AU511875B2 (en) Protein from grass
AU525096B2 (en) Television receiver automatic tuning control
EP0005128A3 (en) Improvement in circuits for the automatic tuning of voltage controlled filters
JPS5637720A (en) Channel divider
JPS5696519A (en) Tone control circuit
JPS5372549A (en) Microwave polarized type band pass filter
AU5509080A (en) Tuner memory control circuit
AU505065B2 (en) Automatic fine tuning circuit
AU506512B2 (en) Automatic chrominance gain control system
AU533692B2 (en) Automatic brightness control and c.r.t. bias adjustment
GB1511590A (en) Discrete transversal filter
AU566266B2 (en) Automatic kinescope bias control sampling circuit
JPS5712467A (en) Radio-cassette device
JPS558113A (en) Stereo demodulation circuit
JPS56103561A (en) Quantization feedback circuit
JPS56120278A (en) Frequency discriminating circuit
JPS6464576A (en) Mechanical resonance cancelling system
JPS5525279A (en) Automatic frequency tuning defeat device
AU511348B2 (en) Digital receiver tuning
JPS53148302A (en) Control system for data transmission
JPS56141641A (en) Channel equipment of pulse code modulation terminal
JPS5620347A (en) Fm stereophonic tuner circuit
JPS5544621A (en) Multiple control device
JPS5690621A (en) Channel selector