Patent ID: 8422665
Filing Date: 2013-04-16
Classification: H04M

Abstract:
1. A telephone device for detecting status of a handset with light detection, comprising: a base comprising a housing, a slot being formed on the housing; a light transmitter installed in the housing of the base for emitting light; a light penetrating element installed on the housing and disposed on a side of the slot for penetrating light emitted from the light transmitter; a handset hooked on the base in a detachable manner, an end of the handset reflecting the light emitted from the light transmitter and penetrating through the light penetrating element back to the light penetrating element; a light receiver installed in the housing of the base for receiving the light reflected from the end of the handset and penetrating from the light transmitter when the end of the handset is on-hook with the slot of the housing; a light concentrating element installed in the housing of the base and surrounding the light transmitter, a first opening being formed on the light concentrating element, and the light concentrating element being used for concentrating the light emitted from the light transmitter to the light penetrating element via the first opening; and a control unit coupled to the light receiver for determining whether the end of the handset is on-hook with the slot of the housing according to whether the light receiver receives the light.