JPS56140718A - Digital synthesizer - Google Patents
Digital synthesizerInfo
- Publication number
- JPS56140718A JPS56140718A JP4261080A JP4261080A JPS56140718A JP S56140718 A JPS56140718 A JP S56140718A JP 4261080 A JP4261080 A JP 4261080A JP 4261080 A JP4261080 A JP 4261080A JP S56140718 A JPS56140718 A JP S56140718A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- data
- controller
- inform
- frequency data
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To ensure a highly efficient use of a controller without adding any special terminal, by using the terminal for setting the desired frequency in common to the terminal that receives the checking specified frequeucy data. CONSTITUTION:The controller 14 turns on the MUTE terminal to give a requirement of the frequency data to the external device 17. The device 17 sends the frequency data of 4 bits to the switch signal input terminals K1-K4 of the controller 14 and at the same time sends a high-level signal to the SD terminal to inform a transmission of the frequency data. The controller 14 takes the frequency data into a memory through the terminals K1-K4 and then turns off the MUTE terminal to inform a reception of the data. Then the device 17 sets the SD terminal at a low level to inform a completion of the data transmission.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4261080A JPS56140718A (en) | 1980-04-01 | 1980-04-01 | Digital synthesizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4261080A JPS56140718A (en) | 1980-04-01 | 1980-04-01 | Digital synthesizer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56140718A true JPS56140718A (en) | 1981-11-04 |
JPS6128256B2 JPS6128256B2 (en) | 1986-06-30 |
Family
ID=12640791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4261080A Granted JPS56140718A (en) | 1980-04-01 | 1980-04-01 | Digital synthesizer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56140718A (en) |
-
1980
- 1980-04-01 JP JP4261080A patent/JPS56140718A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6128256B2 (en) | 1986-06-30 |
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