초록 ▼

A detection circuit that detects the open and close state of a flip cover of a communications device. The detection circuit includes a resistive network and an analog-to-digital converter (ADC). When the flip cover is in the closed position, the circuit detects a unique resistive value through a set

A detection circuit that detects the open and close state of a flip cover of a communications device. The detection circuit includes a resistive network and an analog-to-digital converter (ADC). When the flip cover is in the closed position, the circuit detects a unique resistive value through a set of contacts. This voltage level is converted from an analog signal to a digital signal via the ADC for input into a microprocessor. When the flip cover is in the open position, the contacts are broken, thus, disabling the detection of the unique resistive value. The resulting voltage level is converted from an analog signal to a digital signal via the ADC for input into a microprocessor. Software, programmed within the microprocessor, enables the communications device to operate in the appropriate mode according to the detection of the open/close state of the flip cover.

대표청구항 ▼

1. A system for detecting the open/close state of an electronic device, comprising:a first portion having a first set of electrical contacts and a resistive circuit coupled between said first set of electrical contacts; a second portion, movably coupled to said first portion, having a second set of

1. A system for detecting the open/close state of an electronic device, comprising:a first portion having a first set of electrical contacts and a resistive circuit coupled between said first set of electrical contacts; a second portion, movably coupled to said first portion, having a second set of electrical contacts, wherein an electrical connection between said first and second sets of contacts can be made or broken based on the open/close state of said first portion; and a processor for determining whether said electrical connection between said first and second sets of contacts is made or broken by determining whether said electrical connection is based on a voltage measurement from said resistive circuit in said first portion or a voltage measurement from said second portion, and enabling said system to operate in one of a first and second mode based on the said measurement.