Title:
A DIGITAL TEMPERATURE MEASUREMENT CIRCUIT OF THE NON-REFRIGERATED FOCAL PLANE THERMAL IMAGER
Document Type and Number:
WIPO Patent Application WO/2003/083421
Kind Code:
A1
Abstract:
A digital temperature measurement circuit of the non-refrigerated focal plane thermal imager, includes mainly: an image processing approach, in which the analog signals from non-refrigerated focal plane thermal imaging head is input in image synchronistically extracting circuit U2 to achieve system synchronization, the digital signals are divided into two paths and will be processed after being input in digit timesequencing and memory management circuit U16, one path is stored in digital memory U18, another path digital signal is converted in image display transfer circuit U25 under the control of image controlling and temperature calculating circuit U7, the digital signal is converted into image information of colour display in request, and after being filtered in digit timesequencing and memory management circuit U16, the converted image information is input in image buffer area of image display buffer circuit U22 under the control of image controlling and temperature calculating circuit U7, the display of image portion is achieved by digital analog conversion circuit D/AU4 and image output circuit U3; a temperature measurement and display approach, in which the calculation of temperature is processed by image controlling and temperature calculating circuit U7 under the control of image controlling and temperature calculating circuit U7 with the temperature measuring data which is acquired by means of getting the data in request from digital memory U18 storage block and temperature data from the environment temperature sensor, its calculation result and other text data to be displayed is stored in character memory U20, the display data is input into the text buffer area of character display buffer circuit U17 under the control of digit timesequencing and memory management circuit U16 and image controlling and temperature calculating circuit U7, and then the display of the text portion is achieved by means of digital analog conversion circuit D/AU4 and image output circuit U3.
Inventors:
ZHAO FEIYU (CN)
LI QINSHENG (CN)
LI QINSHENG (CN)
Application Number:
PCT/CN2002/000496
Publication Date:
October 09, 2003
Filing Date:
July 12, 2002
Export Citation:
Assignee:
GUANGZHOU SAT INFRARED TECHNOL (CN)
ZHAO FEIYU (CN)
LI QINSHENG (CN)
ZHAO FEIYU (CN)
LI QINSHENG (CN)
International Classes:
H04N5/335; (IPC1-7): G01J5/00; G01K11/00
Foreign References:
| US5272340A | 1993-12-21 | |||
| US4687344A | 1987-08-18 | |||
| JPH02154122A | 1990-06-13 | |||
| JPH10104090A | 1998-04-24 |
Attorney, Agent or Firm:
GUANGZHOU SINO PATENT AGENT CO., LTD. (No. 87 Cangbian Roa, Guangzhou Guangdong 0, CN)
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