Audio broadcast in cordless digital system
View Patent ↗Providing an audio broadcast for a TDMA system. During a single time slot, an audio message is broadcast from a base art and received at a number of portable arts. An audio broadcast command is generated by designating the single time slot and then transmitted to the plurality of portable parts. An additional portable part transmits a broadcast origination signal and the audio message to the base part which transmits the audio broadcast command to the portable parts. by assigning a time slot other than the designated time slot to a portable part, the portable part does not broadcast audio messages during the designated time slot. More than three receiving time slots and more than three sending time slots are divided out for the base art that includes the designated time slot. The audio broadcast command is transmitted during at least two of the more than three sending time slots.
1. A method for providing an audio broadcast for a time division multiple access system with a base part and a plurality of portable parts, comprising:
broadcasting an audio message from the base part during a single time slot of a time division;
receiving the audio message at the plurality of portable parts at least one of which is a hands free unit;
automatically converting the audio message into sound by the plurality of portable parts;
generating an audio broadcast command at the base part by designating the single time slot;
placing the plurality of portable parts in a receive only mode by synchronizing the plurality of portable parts to the a single time slot and turning on only speakers without turning on microphones of the plurality of portable parts;
transmitting the audio broadcast command from the base part to the plurality of portable parts;
transmitting a broadcast origination signal from an additional portable part to the base part;
transmitting the audio message from the additional portable part to the base part;
transmitting the audio broadcast command from the base part to the plurality of portable parts;
assigning a time slot other than the designated time slot to at least one portable unit before the transmitting of the audio broadcast from the base part such that the at least one of the portable parts so assigned does not broadcast audio messages during the designated time slot; and
dividing out more than three receiving time slots and more than three sending time slots for the base part, wherein the designated time slot is one of the more than three sending time slots and wherein the transmitting audio broadcast command is transmitted during at least two of the more than three sending time slots.
2. The method as recited in claim 1 , wherein the base part and the plurality of portable parts form a time division multiple access cordless telephone system.
3. The method, as recited in claim 1 , wherein the base pad and all of the portable parts have a broadcast indicator.
4. The method, as recited in claim 3 , wherein the broadcast indicators are buttons.