Monitoring apparatus

Data processing: measuring – calibrating – or testing – Measurement system – Dimensional determination

Reexamination Certificate

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C342S118000, C708S300000

Reexamination Certificate



To provide a monitoring device which can detect conditions of a sleeping person reliably and which is simple. A monitoring device comprising: multiple independent distance sensors11installed facing different positions in a monitored target area50to be monitored for measuring a distance to a monitored target2,a calculating unit22for calculating changes over time in the outputs of the distance sensors11,and a detection processor23for detecting changes in shape of the monitored target2based on the calculated changes over time in one or multiple distance sensor11among the multiple distance sensors11.

patent: 5334831 (1994-08-01), Maurice
patent: 3-4208 (1991-01-01), None
patent: 3-4209 (1991-01-01), None
patent: 4-71905 (1992-06-01), None
patent: 6-205762 (1994-07-01), None
patent: 11-276443 (1999-10-01), None
patent: 2000-105281 (2000-04-01), None
patent: 2000-217802 (2000-08-01), None
patent: 2001-037739 (2001-02-01), None
patent: 2001-070256 (2001-03-01), None
patent: 2002-214327 (2002-07-01), None


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