Telephone device for caller identification
First Claim
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1. A telephone device capable of receiving an information signal which is modulated in a predetermined way and includes caller identification information about a calling party, the device comprising:
- means for detecting an externally applied alert signal indicating that the information signal will be given;
means for generating an acknowlegment signal indicating an intention to receive the information signal;
means for demodulating the information signal;
means for converting the demodulated information signal to a serial data stream including mark data and message data, wherein the mark data identifies the head of the message data and the message data has the caller identification information;
means for extracting the message data from the serial data stream;
means for converting the extracted message data into parallel data;
a ring detector;
a switchhook; and
dual switched paths for coupling an attached telephone line to the means for demodulating the information signal, the first switched path being actuated upon ring detection by the ring detector, and the second switched path being actuated by closing of the telephone device'"'"'s switchhook.
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Abstract
A Caller ID telephone device is shown, which can identify the caller of a telephone call in either the on-hook or off-hook states. The CID telephone device includes a circuit for detecting a CPE alerting signal, a circuit for generating an acknowledgment signal when the CPE alerting signal is detected, a circuit for demodulating the modulated CID data stream, and a circuit for analyzing the data stream and output parallel data.
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Citations
14 Claims
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1. A telephone device capable of receiving an information signal which is modulated in a predetermined way and includes caller identification information about a calling party, the device comprising:
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means for detecting an externally applied alert signal indicating that the information signal will be given; means for generating an acknowlegment signal indicating an intention to receive the information signal; means for demodulating the information signal; means for converting the demodulated information signal to a serial data stream including mark data and message data, wherein the mark data identifies the head of the message data and the message data has the caller identification information; means for extracting the message data from the serial data stream; means for converting the extracted message data into parallel data; a ring detector; a switchhook; and dual switched paths for coupling an attached telephone line to the means for demodulating the information signal, the first switched path being actuated upon ring detection by the ring detector, and the second switched path being actuated by closing of the telephone device'"'"'s switchhook. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13)
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10. A telephone device capable of receiving an analog information signal which is modulated in a predetermined way and includes caller identification information about a calling party, the device comprising:
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means for converting the analog information signal and an alert signal indicating that the information signal will be given into digital signals; means for detecting the digital alert signal; means for generating a digital acknowledgment signal indicating an intention to receive the information signal; means for converting the digital acknowledgment signal into an analog signal; means for demodulating the digital information signal; means for converting the demodulated digital information signal to a serial data stream including mark data and message data, wherein the mark data identifies the head of the message data and the message data has the caller identification information; means for detecting whether the information signal appears or not; means for extracting the message data from the serial data stream only when the information signal appears; means for converting the extracted message data into parallel data; a ring detector; a switchhook; and dual switched paths for coupling an attached telephone line to the means for converting the analog information signal into a digital signal, the first switched path being actuated upon ring detection by the ring detector, and the second switched path being actuated by closing of the telephone device'"'"'s switchhook. - View Dependent Claims (11, 14)
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12. A telephone device capable of receiving an analog information signal which is modulated in a predetermined way and includes caller identification information about a calling party, the device comprising:
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means for converting the analog information signal and an alert signal indicating that the information signal will be given into digital signals, in accordance with over-sampling scheme; means for performing rate reduction of the digital signals; means for detecting the digital alert signal; means for generating a digital acknowledgment signal indicating an intention to receive the information signal; means for performing rate elevation of the digital acknowledgment signal; means for converting the rate-elevated digital acknowledgment signal into an analog signal; means for demodulating the digital information signal; means for converting the demodulated digital information signal to a serial data stream including mark data and message data, wherein the mark data identifies the head of the message data and the message data has the caller identification information; means for detecting whether the information signal appears or not; means for extracting the message data from the serial data stream only when the information signal appears; and means for converting the extracted message data into parallel data.
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Specification