JPS5637720A - Channel divider - Google Patents
Channel dividerInfo
- 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
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.
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)
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 |
-
1979
- 1979-09-05 JP JP11376179A patent/JPS5637720A/en active Pending
Cited By (4)
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 |