System and method for remote optical digital networking of computing devices
First Claim
1. An apparatus for asymmetrically receiving and transmitting infrared data communication, the apparatus comprising:
- a stationary obiect with a receiver for reception of the infrared data communication at a first bit rate from at least one user device, wherein each message bit sent by the user device has been converted to a series of identical optical transmission pulses so as to extend a physical range of the user device and the receiver reconstructs each of the identical optical pulses into a single message bit;
a plurality of infrared transceivers spatially arranged around the stationary object and electrically coupled thereto, whereby the infrared transceivers are capable of transmitting infrared pulses back to the user device at second bit rate that is higher than the first bit rate;
a plurality of n spatially multiplexed synchronization channels, where each of the multiplexed synchronization channels receives optical transmission pulses with a period P and a time T, and where n is a whole number; and
a signal processor for;
integrating from T−
T/n +((i−
1)T)/n to T−
T/n +((i−
1)T)/n +P each channel i of the plurality of channels, where i goes from 1 to n; and
determining one of the plurality of channels with a maximum integrated value.
6 Assignments
0 Petitions
Accused Products
Abstract
The extended range of optical data communication is enabled through the use of intermediary relay stations spaced fairly far apart. IRDA communicatiOn, as is well known, uses very short duration optical pulses to send data up to 1 Mbit/sec; this has the concomitant effect of minimizing LED duty cycle and preventing excessive heating. The invention uses a number of integrated pulses to represent a single bit instead of utilizing a one-to-one correspondence between pulses and bits. Processing software causes the transmitter to “stutter” or repetitively emanate the identical pulse representing a bit of information. Sufficient photons are thereby gathered at a receiver to reach a predetermined threshold. A tradeoff of the data transmission frequency in this invention is that as signal intensity drops by a factor of 100 when distance increases by a factor of 10 yielding a distance/intensity ratio of 1/10.
-
Citations
19 Claims
-
1. An apparatus for asymmetrically receiving and transmitting infrared data communication, the apparatus comprising:
-
a stationary obiect with a receiver for reception of the infrared data communication at a first bit rate from at least one user device, wherein each message bit sent by the user device has been converted to a series of identical optical transmission pulses so as to extend a physical range of the user device and the receiver reconstructs each of the identical optical pulses into a single message bit; a plurality of infrared transceivers spatially arranged around the stationary object and electrically coupled thereto, whereby the infrared transceivers are capable of transmitting infrared pulses back to the user device at second bit rate that is higher than the first bit rate; a plurality of n spatially multiplexed synchronization channels, where each of the multiplexed synchronization channels receives optical transmission pulses with a period P and a time T, and where n is a whole number; and a signal processor for; integrating from T−
T/n +((i−
1)T)/n to T−
T/n +((i−
1)T)/n +P each channel i of the plurality of channels, where i goes from 1 to n; anddetermining one of the plurality of channels with a maximum integrated value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for asymmetrically receiving and transmitting infrared data communication, the method comrrising:
-
receiving, with a stationary object, the infrared data communication at a first bit rate from at least one user device, wherein each message bit sent by the user device has been converted to a series of identical optical transmission pulses so as to extend a physical range of the user device and a receiver reconstructs each of the identical optical pulses into a single message bit; and transmitting, with a plurality of infrared transceivers spatially arranged around the stationary object and electrically coupled thereto, infrared pulses back to the user device at a second bit rate that is higher than the first bit rate; receiving on each of a plurality of n spatially multiplexed synchronization channels, optical transmission pulses with a period P and a time T, where n is a whole number; integrating from T−
T/n +((i−
1)T)/n to T−
T/n +((i−
1)T)/n +P each channel i of the plurality of channels, where i goes from 1 to n; anddetermining one of the plurality of channels with a maximum integrated value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A computer program product for asymmetrically receiving and transmitting infrared data communication, the computer program product comprising:
a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method, the instructions which have been stored comprising; receiving, with a stationary object, the infrared data communication at a first bit rate from at least one user device, wherein each message bit sent by the user device has been converted to a series of identical optical transmission pulses so as to extend a physical range of the user device and a receiver reconstructs each of the identical optical pulses into a single message bit; transmitting, with a plurality of infrared transceivers spatially arranged around the stationary object and electrically coupled thereto, infrared pulses back to the user device at a second bit rate that is higher than the first bit rates receiving on each of a plurality of n spatially multiplexed synchronization channels, optical transmission pulses with a reriod P and a time T, where n is a whole number; integrating from T−
T/n +((i−
1)T)/n to T−
T/n +((i−
1)T)/n +P each channel i of the plurality of channels, where i goes from 1 to n; anddetermining one of the plurality of channels with a maximum integrated value. - View Dependent Claims (18, 19)
Specification