Cordless pointing apparatus
First Claim
Patent Images
1. A peripheral pointing apparatus for selecting a desired position for transmission to a processing system, comprising:
- a hand-held pointer including a transmitter continually transmitting a through the air signal;
a fixed base unit positioned in proximity to said pointer including a receiver for receiving the through the air transmitted signal, the receiver including spaced apart first and second pairs of photodiodes and a receive circuit connected to said photodiodes, the receive circuit developing a first angle signal representing a first angle of said inter relative to said base unit using said first pair of photodiodes and a second angle signal representing a second angle of said pointer relative to said base unit using said second pair of photodiodes, processing means for processing the first angle signal and the second angle signal to determine position of the pointer relative to the fixed base receiver in response to the received signal, and transmission means for transmitting information representing the determined position to a processing system.
7 Assignments
0 Petitions
Accused Products
Abstract
A cordless peripheral pointing apparatus selects a position for transmission to a processing system. The apparatus comprises a hand-held pointer including a transmitter continually transmitting a through-the-air signal. A fixed base unit is positioned in proximity to the pointer and includes a receiver receiving the through-the-air transmitted signal, a processor for processing the received signal to determine position of the pointer relative to the fixed receiver in response to the received signal, and transmitter for transmitting information representing the determined position to a processing system.
-
Citations
17 Claims
-
1. A peripheral pointing apparatus for selecting a desired position for transmission to a processing system, comprising:
-
a hand-held pointer including a transmitter continually transmitting a through the air signal; a fixed base unit positioned in proximity to said pointer including a receiver for receiving the through the air transmitted signal, the receiver including spaced apart first and second pairs of photodiodes and a receive circuit connected to said photodiodes, the receive circuit developing a first angle signal representing a first angle of said inter relative to said base unit using said first pair of photodiodes and a second angle signal representing a second angle of said pointer relative to said base unit using said second pair of photodiodes, processing means for processing the first angle signal and the second angle signal to determine position of the pointer relative to the fixed base receiver in response to the received signal, and transmission means for transmitting information representing the determined position to a processing system. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A peripheral pointing apparatus for selecting a desired position for transmission to a processing system, comprising:
-
a hand-held pointer including a transmitter continually transmitting a through the air infra-red light signal; a fixed receiver positioned in proximity to said pointer and including first and second sensors each receiving the transmitted light signal, the receiver including spaced apart first and second pairs of photodiodes and a receive circuit connected to said photodiodes, the receive circuit developing a first angle signal representing a first angle of said pointer relative to said base unit using said first pair of photodiodes and a second angle signal representing a second angle of said pointer relative to said base unit using said second pair of photodiodes, processing means for processing the first angle signal and the second angle signal to determine a coordinate position of the pointer relative to the fixed receiver, and transmission means for transmitting information representing the determined coordinate position to a processing system. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A peripheral pointing apparatus for selecting a desired position for transmission to a processing system, comprising:
-
a hand-held pointer including a transmitter continually transmitting a through the air infra-red modulating light signal; a fixed receiver positioned in proximity to said pointer and including first and second sensors each receiving the transmitted light signal, the sensors comprising spaced apart first and second pairs of photodiodes and a receive circuit connected to said photodiodes, the receive circuit developing a first angle signal representing a first angle of said pointer relative to said base unit using said first pair of photodiodes and a second angle signal representing a second angle of said pointer relative to said base unit using said second pair of photodiodes, processing means for processing the first angle signal and the second angle signal to determine a coordinate position of the pointer relative to the fixed receiver, and transmission means for transmitting information representing the determined coordinate position to a processing system. - View Dependent Claims (16, 17)
-
Specification