JPS5467711A - Receiving data signal generator circuit - Google Patents
Receiving data signal generator circuitInfo
- Publication number
- JPS5467711A JPS5467711A JP13408677A JP13408677A JPS5467711A JP S5467711 A JPS5467711 A JP S5467711A JP 13408677 A JP13408677 A JP 13408677A JP 13408677 A JP13408677 A JP 13408677A JP S5467711 A JPS5467711 A JP S5467711A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- circuit
- signal
- receiving data
- receiving
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/06—Demodulator circuits; Receiver circuits
- H04L27/066—Carrier recovery circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Communication Control (AREA)
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To prevent noise from being transmitted as receiving data signals by providing a circuit, which detects carrier breaking in a time shorter than the carrier breaking detection time of a carrier detection circuit, in the receiving data signal generator circuit of the MODEM for data communication. CONSTITUTION:After the modulated wave signal from receiving input terminal 1 is received by receiving circuit 2, this modulated wave signal is sent to carrier detector circuit 3, demodulator circuit 4 and the second carrier detector circuit 6, which has a carrier breaking detection time shorter than the carrier breaking detection time of carrier detector circuit 3, respectively. Then, logical operation circuit 5a takes out the carrier detection signal of carrier detector circuit 3 and the DC binary signal taken out from the modulated wave signal by demodulator circuit 4, namely, the receiving data signal and the carrier detection signal of the second carrier detector circuit 6 as an AND of them, and this output is defined as a receiving signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13408677A JPS5823023B2 (en) | 1977-11-10 | 1977-11-10 | Reception data signal generation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13408677A JPS5823023B2 (en) | 1977-11-10 | 1977-11-10 | Reception data signal generation circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5467711A true JPS5467711A (en) | 1979-05-31 |
JPS5823023B2 JPS5823023B2 (en) | 1983-05-12 |
Family
ID=15120077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13408677A Expired JPS5823023B2 (en) | 1977-11-10 | 1977-11-10 | Reception data signal generation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5823023B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239942A (en) * | 1985-08-15 | 1987-02-20 | Toyo Commun Equip Co Ltd | Modulator and demodulator for data transmission |
-
1977
- 1977-11-10 JP JP13408677A patent/JPS5823023B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239942A (en) * | 1985-08-15 | 1987-02-20 | Toyo Commun Equip Co Ltd | Modulator and demodulator for data transmission |
JPH0471380B2 (en) * | 1985-08-15 | 1992-11-13 | Toyo Communication Equip |
Also Published As
Publication number | Publication date |
---|---|
JPS5823023B2 (en) | 1983-05-12 |
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