JPS5616388A - Generating circuit of time-division multifrequency signal - Google Patents
Generating circuit of time-division multifrequency signalInfo
- Publication number
- JPS5616388A JPS5616388A JP9238179A JP9238179A JPS5616388A JP S5616388 A JPS5616388 A JP S5616388A JP 9238179 A JP9238179 A JP 9238179A JP 9238179 A JP9238179 A JP 9238179A JP S5616388 A JPS5616388 A JP S5616388A
- Authority
- JP
- Japan
- Prior art keywords
- address
- output
- rom1
- time
- division
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
PURPOSE:To realize a time-division multifrequency signal generating circuit having a small number of using component parts and a high frequency accuracy along with a simple adjustment, by giving the time-division multiplication to an optional number of sine waves having an optional frequency. CONSTITUTION:Reading address 4-1 of ROM1 which is decided by output 3-1 of 1/N divider 3 is delivered from address memory device 4. This output is applied to lower-rank address input terminal ARA of ROM1, and as a result output data 1-1 and 1-2 of ROM1 are decided. If output 1-2 of ROM1 is 0, the signal of terminal SI1 is delivered. In this case, the output of selecting circuit 6 is applied to data input terminal DIA of memory device 4, and 1 is added to the contents of the present address. On the other hand, the signal of terminal SI2 is selected when output 1-2 of ROM1 is 1 to be used for the input of device 4. The address advances by one by the next clock to be read, and at the same time 1 is added to the contents of the address. This action is repeated until divider 3 reaches N, and thus the digital quantity of N units of sine waves emerges.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9238179A JPS5616388A (en) | 1979-07-19 | 1979-07-19 | Generating circuit of time-division multifrequency signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9238179A JPS5616388A (en) | 1979-07-19 | 1979-07-19 | Generating circuit of time-division multifrequency signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5616388A true JPS5616388A (en) | 1981-02-17 |
Family
ID=14052836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9238179A Pending JPS5616388A (en) | 1979-07-19 | 1979-07-19 | Generating circuit of time-division multifrequency signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5616388A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6022861A (en) * | 1983-01-18 | 1985-02-05 | ジーイーシー プレッシー テレコミュニケーションズ リミテッド | Signal voice generator |
JPS61149877A (en) * | 1984-12-25 | 1986-07-08 | Tokyo Keiki Co Ltd | Device for indicating real motion of ppi radar |
-
1979
- 1979-07-19 JP JP9238179A patent/JPS5616388A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6022861A (en) * | 1983-01-18 | 1985-02-05 | ジーイーシー プレッシー テレコミュニケーションズ リミテッド | Signal voice generator |
JPS61149877A (en) * | 1984-12-25 | 1986-07-08 | Tokyo Keiki Co Ltd | Device for indicating real motion of ppi radar |
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