Temperature detection device and method and display system
A temperature detection device and temperature-sensitive technology, which is applied in the direction of measuring devices, thermometers, and parts of thermometers, can solve problems such as sampling errors, and achieve the effect of avoiding sampling errors and preventing the edge of temperature-sensitive signals from being sampled
Active Publication Date: 2019-09-20
SHANGHAI SEEO OPTRONICS TECH CO LTD
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However, there may be a phenomenon that the rising or falling edge of the temperature-sensitive signal is sampled. When the rising or falling edge of the temperature-sensitive signal is sampled, the sample may be high or low. , leading to a sampling error
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[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0056] figure 1It is a structural schematic diagram of a temperature detection device provided by the prior art. The temperature detection device includes: a temperature sensitive clock circuit 1', a first counter unit 2', a reference clock circuit 3', a second counter unit 4' and a sampling unit 5'. The temperature-sensitive clock circuit 1' is connected to the first counter unit 2', the temperature-sensitive clock circuit 1' outputs the temperature-sensitive clock TCO0' that changes with the current temperature...
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The invention discloses a temperature detection device and method and a display system. The temperature detection device comprises a temperature sensing clock circuit, a temperature sensing signal generation module, a sampling clock generation module and a sampling module; the temperature sensing clock circuit generates a temperature sensing clock which changes with present temperature to the temperature sensing signal generation module and the sampling clock generation module; the temperature sensing signal generation module generates a temperature sensing signal according to the temperature sensing clock, and the edge of the temperature sensing signal occurs in the first edge of the temperature sensing clock; the sampling clock generation module generates a sampling clock according to the temperature sensing clock, and the edge of the sampling clock occurs in the second edge of the temperature sensing clock; and the edge of the sampling clock triggers the sampling module to sample the temperature sensing signal, and obtains a temperature sampling value. Thus, the sampling module can be prevented from sampling the edge of the temperature sensing signal, and further a sampling error is avoided.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of temperature detection, in particular to a temperature detection device and a display system. Background technique [0002] The display system includes a display device and a temperature detection device, the temperature detection device is used to detect the current temperature, and the display device is used to display images. Among them, the gray-scale voltage required by the display device to produce the same brightness under different temperature conditions is different, so the voltage curve of the gray-scale voltage needs to be changed according to the current temperature, so that the display device can also be used under different temperature conditions. produce the same brightness. [0003] In the prior art, a clock is usually used to detect the temperature. Generally, a sampling clock that does not vary with temperature and a temperature-sensitive clock that varies with temp...
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IPC IPC(8): G01K1/02H03L7/091H03L7/18G01K1/022
CPCG01K1/024H03L7/091H03L7/18
Inventor刘炳麟张皓东
OwnerSHANGHAI SEEO OPTRONICS TECH CO LTD