H - Electricity – 04 – M
Patent
H - Electricity
04
M
328/166, 379/63
H04M 19/00 (2006.01) H04M 19/08 (2006.01)
Patent
CA 1200035
- 25 - APPARATUS FOR CONTROLLING THE APPLICATION OF TELEPHONE LINE POWER IN A TELEPHONE SET Abstract The present apparatus for controlling the application of telephone line power in a telephone set has obviated the requirement for a local source of power at the premises of a telephone customer. A data processor-based telephone set incorporating the present invention comprises a power supply having first and second voltage storage devices which accumulate charge from the telephone line. First and second regulator circuits regulate the charging of the voltage storage devices and the power distribution to power-consumptive components of the telephone set during on-hook and off-hook switchhook conditions. A voltage threshold detector actuates a power-down of power consumptive components including the data processor when the power supply voltage falls below a particular threshold value. In the meantime, power is continuously provided to certain essential components such as the volatile memory of the data processor. A telephone impedance switch under data processor control intentionally increases the resistance of the telephone set so that the telephone line voltage delivered to the telephone set is increased, the increased voltage powering certain components of the telephone which require the higher voltage level for proper operation. , . . .
431625
Essig Terrence L.
Huizinga Donald D.
Means Donald R.
Kirby Eades Gale Baker
Western Electric Company Incorporated
LandOfFree
Apparatus for controlling the application of telephone line... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for controlling the application of telephone line..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling the application of telephone line... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1303752