JPS57140037A - Display device - Google Patents

Display device

Info

Publication number
JPS57140037A
JPS57140037A JP2626081A JP2626081A JPS57140037A JP S57140037 A JPS57140037 A JP S57140037A JP 2626081 A JP2626081 A JP 2626081A JP 2626081 A JP2626081 A JP 2626081A JP S57140037 A JPS57140037 A JP S57140037A
Authority
JP
Japan
Prior art keywords
signal
circuit
electromagnetic waves
display device
received electromagnetic
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
Application number
JP2626081A
Other languages
Japanese (ja)
Other versions
JPS6228898B2 (en
Inventor
Tomoyoshi Fujita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP2626081A priority Critical patent/JPS57140037A/en
Publication of JPS57140037A publication Critical patent/JPS57140037A/en
Publication of JPS6228898B2 publication Critical patent/JPS6228898B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye

Landscapes

  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To enable to display the quality of received electromagnetic waves suitably and effectively, by switching and displaying electric field strength of the received elecromagnetic waves and the amount of high frequency noise included in a demodulation signal of the received electromagnetic waves to and on a display device. CONSTITUTION:In a radio receiver, an IF signal level not subjected to amplitude limit of an IF amplifying stage 5 is detected at 8, and a detected signal is applied to the 1st driving signal generating circuit 9. A DC component of an output signal of a detecting stage 6 is detected at 10, the detection signal drives the 2nd driving signal generating circuit 11, and a signal from the circuit 11 is displayed on a tuning display device 12. High-frequency noise included in the stage 6 is detected at 13, amplified at 14 and the 3rd driving signal generating circuit 16 is driven with a signal correcting 15 at the high frequency noise generated at the inside of the receiver. If the tuning state of the receiver is incomplete, a switching circuit 17 is driven with an output signal of a DC component detecting circuit 10 and a signal corresponding to the strength of electric field for received electromagnetic waves from the circuit 9 is displayed on a display device 18. When tuning is made, the circuit 17 is switched with a signal from the circuit 10 and a signal according to the amount of high frequency noise in the received electromagnetic waves from a switching circuit 16 is given to the display device 18 for the display of quality of the received electromagnetic waves.
JP2626081A 1981-02-24 1981-02-24 Display device Granted JPS57140037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2626081A JPS57140037A (en) 1981-02-24 1981-02-24 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2626081A JPS57140037A (en) 1981-02-24 1981-02-24 Display device

Publications (2)

Publication Number Publication Date
JPS57140037A true JPS57140037A (en) 1982-08-30
JPS6228898B2 JPS6228898B2 (en) 1987-06-23

Family

ID=12188290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2626081A Granted JPS57140037A (en) 1981-02-24 1981-02-24 Display device

Country Status (1)

Country Link
JP (1) JPS57140037A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008245183A (en) * 2007-03-29 2008-10-09 Clarion Co Ltd Receiver and receiving method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008245183A (en) * 2007-03-29 2008-10-09 Clarion Co Ltd Receiver and receiving method

Also Published As

Publication number Publication date
JPS6228898B2 (en) 1987-06-23

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