Title:
RADAR DISPLAY EMPHASIZING CIRCUIT
Document Type and Number:
Japanese Patent JPH01193678
Kind Code:
A
Abstract:
PURPOSE:To display even a minute target without neglecting the same, by inputting a digital video signal and the output signal of an OR circuit to a switch circuit and outputting the digital video signal when the output signal of the OR circuit is an L-level. CONSTITUTION:The analogue video signal inputted from an antenna is converted to a digital video signal of a plurality of bits in synchronous relation to a clock signal by a multivalent circuit 19 to be compared with a threshold value by a digital comparing circuit 20. When said digital video signal exceeds the threshold value, a binarized data signal becoming an H-level is outputted and inputted to a shift register 22 to shift each figure in synchronous relation to the clock signal. Each figure signal and the output signal of the circuit 20 are inputted to an OR circuit 23 and, when the binarized data signal generates one H-level, the H-level state is continued only for the clock signal interval corresponding to the number of figures of the register 22. The digital display signal outputted from a switch circuit 24 during this continuous period becomes a predetermined digital emphasized value and also becomes the digital video signal outputted from the circuit.
Inventors:
IIDA HIROYUKI
Application Number:
JP1587488A
Publication Date:
August 03, 1989
Filing Date:
January 28, 1988
Export Citation:
Assignee:
ANRITSU CORP
International Classes:
G01S7/12; G01S7/22; (IPC1-7): G01S7/12; G01S7/22
Domestic Patent References:
| JPS61231474A | 1986-10-15 | |||
| JPS61281986A | 1986-12-12 |
Attorney, Agent or Firm:
Takehiko Suzue (2 outside)
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