Title:
THERMAL PICTURE DEVICE
Document Type and Number:
Japanese Patent JP3179712
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize down-sizing and reduce the power consumption by receiving a serial analog picture signal, with corrected responsivity and a gain control signal and multiplying both signals to generate a serial analog picture signal with corrected gain.
SOLUTION: Every detectors 50 are tested for observation of a standard heat source, and their responses are recorded and their correction coefficients are calculated. A microprocessor 122 is given the correction coefficient and supplies a command to a respensiveness controller 200. As a result, a serial analog video signal 52 is standardized by the controller 200 on the basis of the correction coefficient for the specific detector 50 for a thermal picture device. Next, a gain controller 202 multiplies a serial analog picture signal 201 by a gain control signal 209 from the microprocessor 122, thereby generating a serial analog signal 203 whose gain is compensated. The analog signal 203 is allowed to refer to the voltage reference from a reference voltage circuit 212 in an A/D buffer 204, and an accurate refernce signal is generated in an A/D convertor 92.
Inventors:
Richard Chin
David Elle Fable
David Elle Fable
Application Number:
JP23705796A
Publication Date:
June 25, 2001
Filing Date:
September 06, 1996
Export Citation:
Assignee:
Raytheon Company
International Classes:
G01J5/48; G02B23/12; H01J31/50; H04N5/14; H04N5/225; H04N5/33; H04N5/365; (IPC1-7): G01J5/48
Domestic Patent References:
| JP62213385A | ||||
| JP7270243A | ||||
| JP5300438A | ||||
| JP564020A | ||||
| JP6415930U | ||||
| JP525293B2 | ||||
| JP6040230B2 | ||||
| JP563737B2 |
Other References:
【文献】米国特許4618892(US,A)
【文献】米国特許5083204(US,A)
【文献】欧州特許出願公開514254(EP,A1)
【文献】米国特許5083204(US,A)
【文献】欧州特許出願公開514254(EP,A1)
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)