Low power telecommunication controller for a host computer server
US6089456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1996 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Jun 7, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72403
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A handheld low power user device for accessing and controlling interactive bidirectional real time telecommunications with a host server over a telecommunication path, the handheld low power user device having a low power sleep mode and components including a communication transceiver, a microprocessor, a power supply interface and an operator interface selected from among a keypad, a bar code reader, an audio system comprising a speaker, a display screen and a microphone; wherein, the communication transceiver includes a low power voice and data modem, and a DTMF or an MF tone generator; the audio system includes a dual power system; the bar code reader includes a bar code media proximity detector; the microprocessor includes less than about 128 Kbytes of PROM, a protected memory, and RAM; the power supply interface is connected with a telephone line, a cellular or wireless telephone battery, or a PBX line; and the handheld low power user device operates on less than about 300 milliwatts of power when off hook (i.e., active).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.