Position input device and computer system
First Claim
1. A position input system, comprising:
- a position indicator for transmitting signals; and
a position detector device for receiving signals transmitted from the position indicator, wherein said position indicator comprises an electrical double-layer capacitor, a charging circuit which charges the electrical double-layer capacitor, and a power transmission unit which relays power supplied from a power supply unit external to the position indicator to said charging circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
A position input device is provided in which signals are transmitted from a position indicator, and signals transmitted from the position indicator are received by a position detector device. According to certain embodiments, an electrical double-layer capacitor, a charging circuit which charges the electrical double-layer capacitor, and a power transmission unit which relays and supplies to the charging circuit power supplied from a power supply unit external to the position indicator, are provided in the position indicator. In other embodiments the position input device has a built-in power supply unit, transmitting units, and a control unit for switching the transmitting units between energized and de-energized states. Also provided are position input systems and computer systems including the position input device, and methods of operating the position input device and the systems.
-
Citations
45 Claims
-
1. A position input system, comprising:
-
a position indicator for transmitting signals; and
a position detector device for receiving signals transmitted from the position indicator, wherein said position indicator comprises an electrical double-layer capacitor, a charging circuit which charges the electrical double-layer capacitor, and a power transmission unit which relays power supplied from a power supply unit external to the position indicator to said charging circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A computer system, comprising:
-
a position input system comprising a position indicator for transmitting signals, and a position detector device for receiving signals transmitted from the position indicator;
a display device; and
a computer for processing positions detected by said position input device, wherein said position indicator comprises an electrical double-layer capacitor;
a charging circuit for charging the electrical double-layer capacitor; and
a power transmission unit for relaying and supplying, to said charging circuit, power from a power supply unit external to the position indicator. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A method of charging a position indicator of a position input system comprising the position indicator for transmitting signals and a position detector device for receiving signals transmitted by the position indicator, said method comprising the steps of:
-
providing a position indicator with an electrical double-layer capacitor, a charging circuit which charges the electrical double-layer capacitor, and a power transmission unit; and
supplying power from a power supply unit external to the position indicator, and causing the power transmission unit to relay the power to the charging circuit.
-
-
25. A method of operating a computer system, comprising the steps of:
-
providing a position input system comprising a position indicator for transmitting signals, and a position detector device for receiving signals transmitted from the position indicator;
providing a computer for processing information based on positions detected by said position input device; and
supplying power from a power supply unit external to the position indicator, and causing the power transmission unit to relay the power to the charging circuit. - View Dependent Claims (26)
-
-
27. A position pointing device for transmitting a positioning signal to a position detecting tablet, the position pointing device comprising:
-
An integrated power supply unit;
a plurality of signal transmitting units provided at a plurality of portions of a position pointing device; and
a control unit for switching said plurality of signal transmitting units between energized and de-energized states. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
-
-
35. A position pointing device for transmitting a positioning signal to a position detecting tablet, the position pointing device comprising:
-
a built-in power supply unit;
a plurality of signal transmitting units provided at a plurality of portions of said position pointing device; and
a power control unit for switching magnitude of transmission power of said signal transmitting units between at least two power levels. - View Dependent Claims (36, 37, 38)
-
-
39. A position input system, comprising:
-
a position pointing device for transmitting positioning information signals, said position pointing device comprising a built-in power supply unit, a plurality of signal transmitting units provided at a plurality of portions of said position pointing device, and a power control unit for controlling transmission power of each of said plurality of signal transmitting units;
a position detecting tablet for receiving the positioning information signals from the position pointing device; and
a discriminating unit for discriminating the positioning information signals from said plurality of signal transmitting units. - View Dependent Claims (40, 41)
-
-
42. A computer system, comprising:
-
a position pointing device for transmitting positioning signals, the position pointing device comprising a built-in power supply unit, a plurality of signal transmitting units provided at a plurality of portions of said position pointing device, and a power control unit for controlling transmission power of each of said plurality of signal transmitting units;
a position detecting tablet for receiving the positioning signals from the position pointing device;
a discriminating unit for discriminating the positioning signals from said plurality of signal transmitting units; and
a computer for processing the positioning signals from said position pointing device and discrimination information from said discriminating unit. - View Dependent Claims (43, 44)
-
-
45. A method for charging a position pointing device, comprising the steps of:
-
providing a position pointing device for transmitting a positioning signal to a position detecting tablet, the position pointing device comprising a built-in power supply unit, a plurality of signal transmitting units provided at a plurality of portions of said position pointing device, and a control unit; and
switching said plurality of signal transmitting units between energized or de-energized states.
-
Specification