Class I cellular mobile telephone apparatus
AssigneeMitsubishi Consumer Electronics America, Inc.
InventorOscar Dayani
Life of this patent
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Abstract
A class 1 cellular mobile telephone apparatus has an LCD display and keypad provided in a transceiver main unit, which can be installed directly in a passenger compartment of a motor vehicle. The handset unit contains only a speaker and a microphone, eliminating the need for a microprocessor and associated supporting circuitry. The additional space within the handset is utilized for placement of a battery pack power supply for transportable operation of the apparatus. The apparatus is smaller, simpler and lighter in weight than conventional class 1 cellular apparatus.
Claims3
A cellular mobile telephone apparatus, comprising:
- a main unit, including
- transceiver means for transmitting and receiving communication signals in the 800 Mhz frequency range,
- an antenna coupled to said transceiver means for transmitting and receiving radio waves containing said communication signals,
- a keypad including a plurality of alphanumeric keys for inputting signals for controlling operation of said apparatus,
- a microprocessor which controls operation of said apparatus in response to signals inputted from said keypad, and
- display means for displaying alphanumeric information inputted by said keypad;
- and
- a handset unit connected to said main unit by an electrical cord, consisting of
- a speaker for converting received audio signals of said transceiver means into audible sounds,
- a microphone for converting sounds into electrical signals to be transmitted by said transceiver means, and
- a battery pack for powering said apparatus in a transportable operational mode.
Dependencies are inferred from the claim text.