JPS5791039A - Fm receiver - Google Patents
Fm receiverInfo
- Publication number
- JPS5791039A JPS5791039A JP55168896A JP16889680A JPS5791039A JP S5791039 A JPS5791039 A JP S5791039A JP 55168896 A JP55168896 A JP 55168896A JP 16889680 A JP16889680 A JP 16889680A JP S5791039 A JPS5791039 A JP S5791039A
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- amplifier
- audio
- strength
- detector
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
PURPOSE:To preferentially demodulate audio reproduction with fidelity at a strong electric field and with reception articulation at a weak electric field, by providing an electric field strength detector at an intermediate frequency band and switchig an audio demodulation frequency characteristic according to the strength of electric field. CONSTITUTION:Signal sent from a high frequency amplifier 1 and a local oscillator 2 are received at a mixer 3, converted into an intermediate frequency, amplified at an intermediate frequency amplifier 4 and inputted to a frequency discriminator 5. The output of the amplifier 4 is inputted to electric field detector 7, which derives a switch circuit 9 when the strength of electric field is higher than a specified level to connect the demodulated audio output from the discriminator 5 to an audio amplifier 6a, and if the strength of electric field is a weak electric field of a prescribed level of less, the output of the discriminator 5 is given to an audio amplifier 6b. The amplifier 6a has a wide frequency characteristic of audio band and provides the reproduction with fidelity, and the amplifier 6b attenuates low and high frequncies of audio band and emphasizes middle frequencies to give a preference to articulation. A hysteresis characteristic is given for the operation of a detector to keep the output of the detector 7 consistant to the frequent variance of strength of electric field.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55168896A JPS5791039A (en) | 1980-11-27 | 1980-11-27 | Fm receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55168896A JPS5791039A (en) | 1980-11-27 | 1980-11-27 | Fm receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5791039A true JPS5791039A (en) | 1982-06-07 |
Family
ID=15876571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55168896A Pending JPS5791039A (en) | 1980-11-27 | 1980-11-27 | Fm receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5791039A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57198141U (en) * | 1981-06-10 | 1982-12-16 | ||
JPS63111036U (en) * | 1987-01-08 | 1988-07-16 | ||
JPS6478035A (en) * | 1987-09-18 | 1989-03-23 | Mazda Motor | Receiver |
US5028883A (en) * | 1988-09-22 | 1991-07-02 | Kabushiki Kaisha Toshiba | Tone controller for attenuating noise in the signal generated by receiver from weak electric field, and receiver having the tone controller |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS579391A (en) * | 1980-06-17 | 1982-01-18 | Nikkiso Co Ltd | Quick connector device |
-
1980
- 1980-11-27 JP JP55168896A patent/JPS5791039A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS579391A (en) * | 1980-06-17 | 1982-01-18 | Nikkiso Co Ltd | Quick connector device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57198141U (en) * | 1981-06-10 | 1982-12-16 | ||
JPS63111036U (en) * | 1987-01-08 | 1988-07-16 | ||
JPS6478035A (en) * | 1987-09-18 | 1989-03-23 | Mazda Motor | Receiver |
US5028883A (en) * | 1988-09-22 | 1991-07-02 | Kabushiki Kaisha Toshiba | Tone controller for attenuating noise in the signal generated by receiver from weak electric field, and receiver having the tone controller |
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