Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-08-23
2005-08-23
Tieu, Binh (Department: 2643)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S550100, C455S552100, C455S553100
Reexamination Certificate
active
06934560
ABSTRACT:
A system combining a pager type personal digital assistant and a mobile phone module and the method of the same are disclose. The system has a pager for real-time receiving data from a broadcasting system in a whole day; A personal digital assistant unit serves for displaying received data and making a selection responsive to the received data. A GSM/DCS integrating circuit serves to control operations of components of a mobile phone. A communication interface has two frequency channels for bidirectionally transmitting speech and data signals and then transmitting signals through GSM or DCS channels. Thereby, data and speech can be transferred bidirectionally through three channels; and data propagation can be realized in time.
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Pham Tuan
TelePaq Technology Inc.
Tieu Binh
Troxell Law Office PLLC
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