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US 4,910,775 AGranted
Portable electronic device for use in conjunction with a screen
AssigneeTelecash
InventorsAudebert Yves, Delahye Achille
Life of this patent
Estimating the term…
Abstract
The portable electronic device (1) includes some optical reception devices (R), a microcomputer (4) suitable for processing the data received, a display device (6) to display data from the microcomputer (4), and an electrical energy source to supply the various circuits. The device includes a keyboard (8) which enables the user to also to key in data into the microcomputer (4), the latter being programmed to use the data from the optical reception devices (R) and/or from the keyboard (8), and to display results taking account of the data, possibly combined.
Claims15
A portable electronic device comprising:
- at least some optical reception means;
- a microcomputer suitable for processing data received;
- a display device to display data emanating from the microcomputer;
- an electrical source to supply power to various circuits;
- a keyboard enabling a user also to key in data into the microcomputer, and said microcomputer is programmed to use the data from at least one of the optical reception means and the keyboard and to display results taking account of said data, possibly in combination;
- and
- processors to apply self-adaptability to a screen, said processors having a capacitor whose charging and discharging through a resistor are controlled by the microcomputer, said processors obtaining a comparison threshold based on a level of optical reception.
4 more elements
Dependencies are inferred from the claim text.