Receiver control circuit and portable electronic device employing same

摘要

A receiver control circuit includes a first receiver, a second receiver, a first light sensor, a second light sensor, and a determination circuit. The first light sensor detects light transmitted to the first receiver. The second light sensor detects light transmitted to the second receiver. The determination circuit compares an intensity of the light detected by the first light sensor with an intensity of the light detected by the second light sensor. The determination circuit further selectively activates the first receiver when the intensity of the light detected by the first light sensor is less than the intensity of the light detected by the second light sensor, or activates the second receiver when the intensity of the light detected by the first light sensor is greater than the intensity of the light detected by the second light sensor.

主权项

1. A receiver control circuit for a portable electronic device, comprising:
a first receiver positioned on the portable electronic device; a second receiver positioned on the portable electronic device and spaced apart from the first receiver; a first light sensor positioned adjacent to the first receiver, the first light sensor detecting light transmitted to the first receiver; a second light sensor positioned adjacent to the second receiver, the second light sensor detecting light transmitted to the second receiver; and a determination circuit electronically connected to the first receiver, the second receiver, the first light sensor, and the second light sensor; the determination circuit comparing an intensity of the light detected by the first light sensor with an intensity of the light detected by the second light sensor, the determination circuit further selectively activating the first receiver when the intensity of the light detected by the first light sensor is less than the intensity of the light detected by the second light sensor, or activating the second receiver when the intensity of the light detected by the first light sensor is greater than the intensity of the light detected by the second light sensor.