Button illumination for repertory dialer with low battery...

Details Button illumination for repertory dialer with low battery... Button illumination for repertory dialer with low battery...

H - Electricity

04

M

379/2, 379/24, 3

H04M 1/22 (2006.01) H04M 1/274 (2006.01)

Patent

CA 1171988

- 12 - BUTTON ILLUMINATION FOR REPERTORY DIALER WITH LOW BATTERY VOLTAGE INDICATION Abstract of the Disclosure A display illuminating circuit for a repertory dialer telephone set allows for a subscriber to operate a desired repertory button in low ambient light emergency situations. The circuit illuminates the desired buttons by distinguishable colors of light-emitting elements. Activation of the illumination circuit occurs in response to the telephone set going off-hook and then only for a limited period to conserve battery life. A battery voltage monitoring arrangement provides an indication when a local battery needs to be replaced. In response to an activation signal provided by the voltage monitoring arrangement, the light-emitting elements flash at a level that is detectable by the subscriber going off-hook even in normal ambient light conditions. , .,

387938

Affiliated with

Also associated with

Rating

Button illumination for repertory dialer with low battery... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Button illumination for repertory dialer with low battery..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Button illumination for repertory dialer with low battery... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1316168