H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/5, 379/71
H04M 11/06 (2006.01) H04B 3/20 (2006.01)
Patent
CA 1166370
ABSTRACT OF THE DISCLOSURE A data tone disabling circuit for disabling prior to the transmission of data on a telephone transmission line a device which is connected to the line for improving voice transmission on the line. The disabling circuit operates in response to the transmission on the line of a tone signal whose frequency falls within a predetermined band width and which also has a pre- determined amplitude and minimum duration. The disabling circuit processes the signal transmitted on the line to generate two control signals. One of the control signals is a function of the transmission line signal. The other is a function of the energy contained in the transmission line signal which lies in a pre- determined frequency band which is not the tone frequency band. When the control signal which is a function of the transmission line signal is greater in amplitude than both a reference signal and the energy related control signal, a phase locked loop is enabled to capture the tone signal and disable the voice im- proving device.
375885
Reliance Electric Company
Ridout & Maybee Llp
LandOfFree
Tone responsive disabling circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tone responsive disabling circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tone responsive disabling circuit will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-402733