JPS5538710A - Phase lock loop circuit - Google Patents
Phase lock loop circuitInfo
- Publication number
- JPS5538710A JPS5538710A JP11065278A JP11065278A JPS5538710A JP S5538710 A JPS5538710 A JP S5538710A JP 11065278 A JP11065278 A JP 11065278A JP 11065278 A JP11065278 A JP 11065278A JP S5538710 A JPS5538710 A JP S5538710A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- signal
- secure
- control circuit
- phase lock
- 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
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To secure extraction of the signal featuring the 90 deg. phase difference to the basic wave signal regardless of the phase difference between the two signals by eliminating the range for the phase control. CONSTITUTION:In case signal (a) is selected by change-over switch 4, signal (a) passes through phase control circuit 5 and wave form conversion circuit 6. Then output signal (g) is compared with signal (b) for the phase at phase comparator 7, and thus the error voltage is supplied to phase control circuit 5 to secure the control so that the phase of signal (a) may feature the 90 deg. phase difference to signal (b). The error voltage, i.e., the output voltage of integrator 8 is monitored by window comparator 9. And when the phase lock becomes impossible, change-over switch control circuit 10 switches switch 4 in sequence to select signals (c)-(e) and to secure the phase lock.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11065278A JPS5538710A (en) | 1978-09-11 | 1978-09-11 | Phase lock loop circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11065278A JPS5538710A (en) | 1978-09-11 | 1978-09-11 | Phase lock loop circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5538710A true JPS5538710A (en) | 1980-03-18 |
Family
ID=14541086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11065278A Pending JPS5538710A (en) | 1978-09-11 | 1978-09-11 | Phase lock loop circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5538710A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5758213A (en) * | 1980-09-24 | 1982-04-07 | Sony Corp | Phase controlling circuit |
JPS5917637U (en) * | 1982-07-22 | 1984-02-02 | 東光精機株式会社 | phase shift control device |
WO1988002577A1 (en) * | 1986-10-03 | 1988-04-07 | Nippon Telegraph And Telephone Corporation | Timing signal delay circuit |
JPS63310217A (en) * | 1987-06-12 | 1988-12-19 | Nitsuko Corp | Digital phase locked loop circuit |
-
1978
- 1978-09-11 JP JP11065278A patent/JPS5538710A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5758213A (en) * | 1980-09-24 | 1982-04-07 | Sony Corp | Phase controlling circuit |
JPS5917637U (en) * | 1982-07-22 | 1984-02-02 | 東光精機株式会社 | phase shift control device |
WO1988002577A1 (en) * | 1986-10-03 | 1988-04-07 | Nippon Telegraph And Telephone Corporation | Timing signal delay circuit |
US4939677A (en) * | 1986-10-03 | 1990-07-03 | Nippon Telegraph And Telephone Corporation | Timing-signal delay equipment |
JPS63310217A (en) * | 1987-06-12 | 1988-12-19 | Nitsuko Corp | Digital phase locked loop circuit |
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