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US 2003/0143986 A1Published application
Communications terminal
AssigneeSamsung Electronics Co., Ltd.
InventorsMoyeen Shujauddin Mufti, Tae-Hyun Nam
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Abstract
A communications terminal comprising means operable, in the absence of significant input to the terminal, to automatically terminate a call.
Claims10
A communication terminal, which includes a micro-processor, a microphone and a keypad, for communicating via a communication channel, comprising:
- a comparator for comparing, while said communication channel is open, a microphone output voltage level and a predetermined reference voltage level, wherein the microphone output voltage level corresponds to an audio signal input to said microphone;
- an automatic disconnect unit (ADU) which receives a low volume alert signal from the comparator when the microphone output voltage level falls below the predetermined reference voltage level;
- and
- first and second timers, wherein:
- if the comparator sends the low volume alert signal for a first predetermined period, the first timer provides a user alert and starts the second timer, and
- if an acknowledgement is not received during a second predetermined period of the second timer, the ADU automatically terminates the communication channel.
3 more elements
A method for automatically terminating a communication channel of a communication terminal which includes a micro-processor, a microphone and a keypad, for communicating via said communication channel;
- said method comprising:
- comparing, by a comparator, while said communication channel is open, a microphone output voltage level and a predetermined reference voltage level, wherein the microphone output voltage level corresponds to an audio signal input to said microphone;
- receiving a low volume alert signal from the comparator when the microphone output voltage level falls below the predetermined reference voltage level;
- and
- providing, if the comparator sends the low volume alert signal for a first predetermined period of a first timer, a user alert and starting a second timer;
- and
- automatically terminating the communication channel if an acknowledgement is not received during a second predetermined period of the second timer.
4 more elements
Dependencies are inferred from the claim text.