Apparatus for auto dialing telephone numbers and DTMF tones in a personal communication device
First Claim
1. In a radio telephone system, an apparatus for transmitting a data string representing DTMF tones which may include a preceding series of dialing digits followed by a predefined delimiter comprising:
- a radio telephone having a computer interface connected to receive commands from a data bus;
a random access memory for storing a character string;
a data processor connected by said bus and to said random access memory and to said radio telephone, said data processor being programmed to create logic means comprising;
phone busy means for detecting whether said radio telephone is engaged in a telephone call;
means, responsive to said phone busy means indicating an active call, for reading said character string and for sending commands over said data bus to cause said radio telephone to send DTMF tones corresponding to the entire character except for the delimiter character which is interpreted as a pause;
means, responsive to said phone busy means indicating no active call, for reading each character of said stored character string and for identifying each delimiter character in said character string, the first of said characters delimiting the end of dialing digits and the beginning of DTMF digits;
means for sending a command over said bus to said radio telephone to place a call to a party identified by said dialing digits;
, if any, and,means for sending a subsequent command to said radio telephone to transmit each character following the first said delimiter character as DTMF tones except delimiter characters.
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Accused Products
Abstract
A radio telephone which communicates via cellular telephone networks and by direct connection to a PSTN. The radio telephone includes a random access memory for storing a character string comprising dialing digits defining a calling number and DTMF digits representing signalling tones for accessing information to called equipment. The character string includes a delimiting character for separating dialed digits and DTMF digits. In a dialing sequence, the cellular radio will dial numbers defined by the dial digits and send the remaining characters as DTMF tones to connected telephone.
89 Citations
8 Claims
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1. In a radio telephone system, an apparatus for transmitting a data string representing DTMF tones which may include a preceding series of dialing digits followed by a predefined delimiter comprising:
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a radio telephone having a computer interface connected to receive commands from a data bus;
a random access memory for storing a character string;a data processor connected by said bus and to said random access memory and to said radio telephone, said data processor being programmed to create logic means comprising; phone busy means for detecting whether said radio telephone is engaged in a telephone call; means, responsive to said phone busy means indicating an active call, for reading said character string and for sending commands over said data bus to cause said radio telephone to send DTMF tones corresponding to the entire character except for the delimiter character which is interpreted as a pause; means, responsive to said phone busy means indicating no active call, for reading each character of said stored character string and for identifying each delimiter character in said character string, the first of said characters delimiting the end of dialing digits and the beginning of DTMF digits; means for sending a command over said bus to said radio telephone to place a call to a party identified by said dialing digits;
, if any, and,means for sending a subsequent command to said radio telephone to transmit each character following the first said delimiter character as DTMF tones except delimiter characters. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling a radio telephone to place a telephone call and transmit a series of DTMF digits contained in the same character string as dial digits comprising:
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storing in a register a series of digits including a sequence of DTMF digits, which include dial digits separated from said DTMF digits by at least one comma; detecting if said radio telephone is busy with an existing call; reading each character in said register and identifying the first comma in said register as a delimiter to separate dialing digits and DTMF digits if said radio telephone is not busy and as a pause in a series of DTMF digits if said radio telephone is busy; forming a dial command from said dialing digits, if any, and forwarding said command to a radio telephone for placing a call to a receiving device identified by said dialing digits; and
,forming a DTMF command for each of said digits following said comma, and forwarding said DTMF commands to said radio telephone along with each of said following digits, whereby said radio telephone places said call and subsequently transmits said DTMF digits to said called receiving device. - View Dependent Claims (7, 8)
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Specification