Portable telephone

Details Portable telephone Portable telephone

1992-03-10

1993-06-22

Schreyer, Stafford

Telephonic communications

With usage measurement

Call charge metering or monitoring

379140, 379 58, H04M 1500

Patent

active

052221270

ABSTRACT:
A portable telephone of a type to which a plurality of subscriber numbers are registered comprises an air timer for measuring a calling period of time from start of calling and end of calling and a memory device for saving and integrating results of measuring by the air timer for each subscriber number. The portable telephone also includes a last call timer, a user timer and a system timer. The memory device includes a RAM. In the RAM, memory areas for the last call timer, user timer and system timer are provided for respective subscriber numbers. As a telephone communication is finished, a calling period of time measured by the air timer is saved in the last memory area to which the subscriber number just used is assigned and this calling period of time is also added up into the user timer memory area and/or system timer memory area for the just used subscriber number.

REFERENCES:
patent: 4264956 (1981-04-01), Delaney
patent: 4754479 (1988-06-01), Bicknell et al.

Affiliated with

Also associated with

Rating

Portable telephone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable telephone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable telephone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1445490