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Portable Electronic Device

IP.com Disclosure Number: IPCOM000228610D
Publication Date: 2013-Jun-24

Publishing Venue

The IP.com Prior Art Database

Abstract

In a portable electronic device components (2) consuming electrical power during operation may gen-erate heat. A temperature sensor (1) for sensing an ambi-ent temperature (TS) of the portable electronic device may as a consequence not supply the correct temperature value. It is suggested to provide a compensator (4) for determining a compensated ambient temperature (TA) de-pendent on at least the sensed ambient temperature (TS) and information (Pi) related to the electrical power con-sumed by at least one of the components (2).

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Page 01 of 17

PORTABLE ELECTRONIC DEVICE

Abstract

In a portable electronic device components


(2) consuming electrical power during operation may gen- erate heat. A temperature sensor (1) for sensing an ambi- ent temperature (TS) of the portable electronic device

may as a consequence not supply the correct temperature value. It is suggested to provide a compensator (4) for determining a compensated ambient temperature (TA) de- pendent on at least the sensed ambient temperature (TS)

and information (Pi) related to the electrical power con- sumed by at least one of the components (2).

Technical Field

          The present invention relates to a portable electronic device, to a method for operating a portable electronic device, and to a computer program element for operating a portable electronic device.

Background Art

          It is desired to conduct a precise measure- ment of the ambient temperature with a portable electron- ic device such as a mobile phone or a portable computing device, which portable electronic device typically com- prises a processor and/or a display generating heat dur- ing operation.

Disclosure of the Invention


Page 02 of 17

          This problem is solved by a portable elec- tronic device. The portable electronic device comprises a temperature sensor for sensing an ambient temperature of the portable electronic device which temperature sensor typically provides a sufficient coupling to the environ- ment of the portable electronic device, e.g. by being ex- posed to the ambient through openings in a housing of the device or other means. However, given that the portable electronic device, which may be a mobile phone or a port- able electronic computing device in one embodiment, typi- cally comprises components that consume electrical power and thereby release heat during operation, such as a pro- cessor and/or a display for example, the ambient tempera- ture sensed by the temperature sensor may be impacted in view of heat migrating from such component to the temper- ature sensor. This may result in that the temperature sensed by the temperature sensor no longer reflects the real ambient temperature but reflects the real ambient temperature perturbed by the self-heating of the device. Hence, the present portable electronic device comprises a compensator for determining a compensated ambient temper- ature which preferably better reflects the real ambient temperature. This compensated ambient temperature repre- sents an estimate of the real ambient temperature based on the sensed ambient temperature as supplied by the tem- perature sensor and by taking into account the heat gen- erated at least at one heat releasing electronic compo- nent of the device via information being related to the electrical power consumed by this component.

          As a result, the sensed ambient temperature preferably may be corrected by a temperature value owed to the heat transferred from the subject component to the temperature sensor. Preferably, all components of the de- vice act...