JPS6450982A - Deblocking circuit - Google Patents
Deblocking circuitInfo
- Publication number
- JPS6450982A JPS6450982A JP62208731A JP20873187A JPS6450982A JP S6450982 A JPS6450982 A JP S6450982A JP 62208731 A JP62208731 A JP 62208731A JP 20873187 A JP20873187 A JP 20873187A JP S6450982 A JPS6450982 A JP S6450982A
- Authority
- JP
- Japan
- Prior art keywords
- output
- reset signal
- agc
- circuit
- detection
- 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
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To automatically release a blocking state, by detecting the generation of the blocking state and controlling the AGC voltage of an AGC circuit so as to minimize the gain of a linear amplifier. CONSTITUTION:A local signal constant in frequency and a level is outputted from a local oscillator 7 and amplified under the gain control of an AGC circuit 6 by a linear amplifier 8 and outputted. A detection circuit 9 performs the envelope detection of the output of the amplifier to output said output to a comparator 10. The comparator 10 compares this detection output with a reference level to output a reset signal only when the detection output does not exceed the reference level and stops the output thereof when said output exceeds the reference level. A counter 11 does not perform counting when the reset signal is inputted while the output of the comparator 10 is received and starts counting when the input of the reset signal is stopped and outputs an AGC reset signal to the circuit 6 setting AGC voltage so as to minimize the gains of amplifiers 1, 2, 8 after the counting of a prescribed value is completed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62208731A JPH0664136B2 (en) | 1987-08-21 | 1987-08-21 | Deblocking circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62208731A JPH0664136B2 (en) | 1987-08-21 | 1987-08-21 | Deblocking circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6450982A true JPS6450982A (en) | 1989-02-27 |
JPH0664136B2 JPH0664136B2 (en) | 1994-08-22 |
Family
ID=16561144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62208731A Expired - Lifetime JPH0664136B2 (en) | 1987-08-21 | 1987-08-21 | Deblocking circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0664136B2 (en) |
-
1987
- 1987-08-21 JP JP62208731A patent/JPH0664136B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0664136B2 (en) | 1994-08-22 |
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