US 5,797,089 A · Personal communications terminal having switches which independently energize a mobile telephone and a personal digital assistant

Abstract

A personal communications terminal (PCT) in a case having a first half hingedly connected to a second half. The PCT operates in an open and a closed position and comprises a mobile telephone unit and a personal digital assistant (PDA) unit electronically connected to the mobile telephone unit. The PDA unit is a fully functional personal computer. The PDA unit comprises a memory for application software programs, a memory for data, a processor for performing operations with the data and the application programs, a modem for passing data between the PDA unit and the mobile telephone unit, and a mobile data interface for passing data between the PDA unit and the mobile telephone unit without utilizing the modem. When the PCT is in the open position, it forms two interior faces which include a PDA display screen on one face and a full alpha-numeric keyboard on the other face. The PCT may be operated as a standard wireless telephone, as a personal computer, or in an integrated mode for FAX, wireless data transfer, or sending and receiving short message service (SMS) messages.

Claims22

Dependent claims

A personal communications terminal in a case having a first half hingedly connected to a second half, said personal communications terminal operating in an open and a closed position, said personal communications terminal comprising:

mobile telephone means including:
a telephone display screen;
a keypad for entering instructions and data that are displayed on said telephone display screen;
and
a telephone power switch that independently energizes said mobile telephone means;
personal digital assistant means electronically connected to said mobile telephone means, said personal digital assistant means comprising:
a first memory device for storing a first set of application software programs;
a second memory device for storing a first set of data;
a processor for performing operations with said first set of data utilizing said first set of application software programs;
and
a personal digital assistant power switch that independently energizes said personal digital assistant means;
a power supply for providing electrical power to said mobile telephone means and said personal digital assistant means;
a modem for passing data between said personal digital assistant means and said mobile telephone means;
and
a mobile data interface for passing data between said personal digital assistant means and said mobile telephone means without utilizing said modem.

12 more elements

a mobile telephone unit including:
a telephone display screen;
a keypad for entering instructions and data that are displayed on said telephone display screen;
a telephone power switch that energizes said mobile telephone unit;
and
means for transmitting and receiving on a plurality of frequency hyperbands, said transmitting and receiving means including:
means for transmitting and receiving on a 800-MHz frequency hyperband;
and
means for transmitting and receiving on a 1900-MHz frequency hyperband;
a personal digital assistant unit electronically connected to said mobile telephone unit, said personal digital assistant unit comprising:
a first memory device for storing a first set of application software programs;
a second memory device for storing a first set of data;
a hard drive memory that stores a second set of data and a second set of application software programs, said second set of application programs including all personal computer software application programs;
and
a processor for performing operations with said first set of data utilizing said first set of application software programs;
an input/output (I/O) port for inputting to said hard drive memory and outputting from said hard drive memory, said second set of application software programs and said second set of data;
a power supply for providing electrical power to said mobile telephone unit and said personal digital assistant unit;
means for accessing said second set of data and said second set of application software programs stored in said hard drive memory when said electrical power from said power supply exceeds a predetermined threshold;
means for accessing said first set of application software programs stored in said first memory device and said first set of data stored in said second memory device when said electrical power from said power supply is less than said predetermined threshold;
a modem for passing data between said personal digital assistant unit and said mobile telephone unit;
and
a mobile data interface for passing data between said personal digital assistant unit and said mobile telephone unit without utilizing said modem.

19 more elements

Dependencies are inferred from the claim text.

Personal communications terminal having switches which independently energize a mobile telephone and a personal digital assistant

Life of this patent

Personal communications terminal having switches which independently energize a mobile telephone and a personal digital assistant

Life of this patent

Abstract

Claims22