JPS5456318A - Phase matching detection method of facsimile - Google Patents
Phase matching detection method of facsimileInfo
- Publication number
- JPS5456318A JPS5456318A JP12385277A JP12385277A JPS5456318A JP S5456318 A JPS5456318 A JP S5456318A JP 12385277 A JP12385277 A JP 12385277A JP 12385277 A JP12385277 A JP 12385277A JP S5456318 A JPS5456318 A JP S5456318A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- phase matching
- counter
- phase
- signal
- 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
Abstract
PURPOSE: To avoid the malfunction for the phase matching by leading out the phase matching output when the wave number of the carrier of the modulated receiving phase signal becomes more than the prescribed value n.
CONSTITUTION: In the phase matching detection circuit, modulated receiving phase signal (b) detected at the receiver side undergoes waveform shaping 1 to be turned to signal (c) which is applied to the clock terminal of counter 2. On the other hand, self-phase signal pulse (a) generated at the receiver side is supplied to the reset terminal of counter 2 to be reset except for the period of pulse (a). And in case n- units of pulses come to the clock terminal, output signal pulse (d) of counter 2 is transmitted. Thus, the end of the phase matching between singal (a) and (b) is known when pulse (d) is delivered. Pulse (a') is shown by compressing the time axis of pulse (a)
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12385277A JPS5456318A (en) | 1977-10-13 | 1977-10-13 | Phase matching detection method of facsimile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12385277A JPS5456318A (en) | 1977-10-13 | 1977-10-13 | Phase matching detection method of facsimile |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5456318A true JPS5456318A (en) | 1979-05-07 |
Family
ID=14870983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12385277A Pending JPS5456318A (en) | 1977-10-13 | 1977-10-13 | Phase matching detection method of facsimile |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5456318A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5729355A (en) * | 1994-01-28 | 1998-03-17 | Matsushita Electric Industrial Co. Ltd. | Facsimile machine having a phase/amplitude fluctuation detector |
-
1977
- 1977-10-13 JP JP12385277A patent/JPS5456318A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5729355A (en) * | 1994-01-28 | 1998-03-17 | Matsushita Electric Industrial Co. Ltd. | Facsimile machine having a phase/amplitude fluctuation detector |
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