JPS6439900A - Receiver - Google Patents
ReceiverInfo
- Publication number
- JPS6439900A JPS6439900A JP19709687A JP19709687A JPS6439900A JP S6439900 A JPS6439900 A JP S6439900A JP 19709687 A JP19709687 A JP 19709687A JP 19709687 A JP19709687 A JP 19709687A JP S6439900 A JPS6439900 A JP S6439900A
- Authority
- JP
- Japan
- Prior art keywords
- carrier signal
- signal
- transmission information
- receiver
- period
- 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
Landscapes
- Selective Calling Equipment (AREA)
Abstract
PURPOSE:To securely reproduce a signal by demodulating transmission information out of a transmission signal based on the output of a discriminating means to discriminate the presence and absence of a carrier signal. CONSTITUTION:A receiver 25 is constituted by including a photodetector, a comparator 4, a synchronizing detector 7 to be a period detecting means, a counter 8 and a waveform shaping device 10 to be the discriminating means and a demodulating means. Namely, the period of the carrier signal of a received signal is detected by the synchronizing detector 7, the presence and absence of the carrier signal is detected for this output by the waveform shaping device 10 and the transmission information are reproduced. Thus, since the receiver 25 detects the period of the carrier signal, it is composed of a digital circuit. Thus, the difference of performance is eliminated between products and the transmission information can be securely reproduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19709687A JPS6439900A (en) | 1987-08-05 | 1987-08-05 | Receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19709687A JPS6439900A (en) | 1987-08-05 | 1987-08-05 | Receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439900A true JPS6439900A (en) | 1989-02-10 |
Family
ID=16368658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19709687A Pending JPS6439900A (en) | 1987-08-05 | 1987-08-05 | Receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439900A (en) |
-
1987
- 1987-08-05 JP JP19709687A patent/JPS6439900A/en active Pending
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