Apple Inc.

USA As Represented by Secretary of the Navy

Matthew Fong

Robert W Schlub

Yi Jiang

Qingxiang Li

Gregory Knowles Fleizach

Digvijay Arjunrao Jadhav

Richard A Davis

Heidi L Buck

Barry R Hunt

Matthew Joseph Nicholson

Brian T Williams

Alan Fronk

Istvan J Szini

Brian D Mariner

Peter C Grossnickle

A portable electronic device can include a housing that at least partially defines an internal volume and an external surface of the device. The housing can include an electromagnetically transparent portion that partially defines the exterior surface. The portable electronic device can include an antenna disposed in the internal volume and a sensing circuit disposed in the internal volume to receive a signal transmitted from the antenna.

Electronic device

An electronic device may be provided with antenna structures. Proximity sensors and other sensors may be used in determining how the electronic device is being operated. Wireless circuitry such as a radio-frequency transmitter associated with a cellular telephone communications band, a wireless local area network band, or other communications band may be used in transmitting radio-frequency signals through the antenna structures at a transmit power. Control circuitry may adjust the wireless circuitry to ensure that the transmit power is capped at a maximum transmit power. The maximum transmit power may be adjusted dynamically by the control circuitry based on data from the proximity sensors, data from a magnetic sensor that detects whether a cover is present on the device, a connector sensor that detects whether the device is coupled to a dock or other accessory, and other sensors.

Wireless device with dynamically adjusted maximum transmit powers

A system and process for the geo-location of an asset given no a priori knowledge regarding time and location of the asset with minimized power consumption is disclosed. In the preferred embodiment, the system is accurate to about 30 meters CEP (50% circular error probable) using just a short segment, e.g., 100-200 ms, of digitized GPS L1 signal data.

System and method for geo-locating a receiver with reduced power consumption

Growing community of inventors

Sunnyvale, CA, United States of America

Matthew Fong