JPS5654180A - Color television receiver - Google Patents

Color television receiver

Info

Publication number
JPS5654180A
JPS5654180A JP13038579A JP13038579A JPS5654180A JP S5654180 A JPS5654180 A JP S5654180A JP 13038579 A JP13038579 A JP 13038579A JP 13038579 A JP13038579 A JP 13038579A JP S5654180 A JPS5654180 A JP S5654180A
Authority
JP
Japan
Prior art keywords
voltage
clamped
connection point
signal line
circuit
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
Application number
JP13038579A
Other languages
Japanese (ja)
Inventor
Katsuyuki Akimoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13038579A priority Critical patent/JPS5654180A/en
Publication of JPS5654180A publication Critical patent/JPS5654180A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details

Abstract

PURPOSE:To automatically tune to original channel when returned to normal reception state, by clamping a defeat voltage and an error voltage at the input point of a channel selection circuit to a given voltage, when a test signal is input to a video amplifying circuit. CONSTITUTION:When a clamper circuit 100 is in operation, the upper limit of voltage of a signal line 9 is clamped to a voltage of the connection point 13 and the lower limit of the voltage of the signal line 9 is clamped to the voltage at the connection point 12. The voltage of the power supply 11 and each resistance value are designed so that the voltage clamped for the upper and lower limit can be a voltage near the objective voltage achieved for automatic fine tuning. Further, the voltage on the signal line 8 is clamped at lower than the voltage at the connection point 14. This lower voltage value corresponds to the voltage indicating the presence of the synchronizing signal at the detection circuit 6 and even if the defeat voltage indicating the absence of the synchronizing signal is output from the circuit 6, the upper limit of the voltage on the signal line 6 is clamped at the voltage at the connection point 14.
JP13038579A 1979-10-09 1979-10-09 Color television receiver Pending JPS5654180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13038579A JPS5654180A (en) 1979-10-09 1979-10-09 Color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13038579A JPS5654180A (en) 1979-10-09 1979-10-09 Color television receiver

Publications (1)

Publication Number Publication Date
JPS5654180A true JPS5654180A (en) 1981-05-14

Family

ID=15033057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13038579A Pending JPS5654180A (en) 1979-10-09 1979-10-09 Color television receiver

Country Status (1)

Country Link
JP (1) JPS5654180A (en)

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