Portable information processing unit
OwnerShuichi Tsugawainventor
Life of this patent
Estimating the term…
Abstract
When a first group of contacts 31a is selected by a power switch 30, all power supply is stopped, when a second group of contacts 31b is selected, power from a power supply portion 27 is supplied only to an information processing circuit 20 and an LCD drive circuit 24, and when a third group of contacts 31c is selected, power from a power supply portion 27 is supplied to all of the information processing circuit 20, the LCD drive circuit 24 and a backlight emitter 26. Thus, an user can arbitrarily choose between turning on a backlight to obtain a bright and legible screen or seeing the screen through natural reflection light with turning off the backlight.
Claims7
A portable information processing unit to be used by a storage medium storing at least program data being connected thereto, comprising:
- an information processing circuit for performing data processing based on the program data stored in said storage medium;
- a liquid crystal display for displaying data processed by said information processing circuit;
- a transflective-type reflection plate laminated on a back surface of said liquid crystal display;
- a backlight emitter, in a shape of a sheet, having the same flat form as said liquid crystal display and laminated on a back surface of said transflective-type reflection plate;
- backlight drive means for driving said backlight emitter;
- a power supply portion for supplying power;
- and
- a power switch capable of being switched among a first group of contacts, a second group of contacts and a third group of contacts,
- said power switch:
- stopping all power supply when said first group of contacts is selected;
- supplying power from said power supply portion only to said information processing circuit and said liquid crystal display when said second group of contacts is selected;
- and
- supplying power from said power supply portion to all of said information processing circuit, said liquid crystal display, and said backlight drive means when said third group of contacts is selected.
Dependencies are inferred from the claim text.