Invention Grant
US08029187B2 Apparatus, system and method for high resolution identification with temperature dependent resistive device
有权
用温度依赖电阻器件进行高分辨率识别的装置,系统和方法
- Patent Title: Apparatus, system and method for high resolution identification with temperature dependent resistive device
- Patent Title (中): 用温度依赖电阻器件进行高分辨率识别的装置,系统和方法
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Application No.: US11677480Application Date: 2007-02-21
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Publication No.: US08029187B2Publication Date: 2011-10-04
- Inventor: John P. Taylor , Jeffrey M. Thoma
- Applicant: John P. Taylor , Jeffrey M. Thoma
- Applicant Address: JP Kyoto
- Assignee: Kyocera Corporation
- Current Assignee: Kyocera Corporation
- Current Assignee Address: JP Kyoto
- Main IPC: G01K7/00
- IPC: G01K7/00 ; G01K7/16 ; G01K1/12

Abstract:
A temperature measuring and identification (TMID) device obtains identification information and temperature information of a connected device having a temperature sensing circuit (TSC). The TSC includes a temperature sensing element (TSE) connected in parallel with a voltage clamping network (VCN) that limits the voltage across the TSE to an identification voltage within an identification voltage range when the voltage is greater than or equal to a lower voltage of the identification voltage range. When a voltage below the lower range is applied to the TSC, the VCN appears as an open circuit and the resistance of the TSC corresponds to temperature. A translation circuit within the TMID shifts TSC voltages within the identification voltage range to a normalization voltage range. Accordingly, voltages corresponding to temperature as well as voltages corresponding to identification are within the normalization voltage range. As a result, the resolution of a voltage sensing device used for measuring the temperature and identification voltages is maximized. In addition, the translation circuit maintains a minimal current during a rest state. For cost or other concerns, a first TSC may omit the VCN to provide a maximum identification voltage and other TSCs may include VCNs with lower identification voltage ranges.
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