System and method of using variable pulses for symbology

• US 7,376,357 B2
• Filed: 10/11/2004
• Issued: 05/20/2008
• Est. Priority Date: 03/21/2000
• Status: Expired due to Fees

• Current Assignee: Lightwaves Systems, Inc.
• Original Assignee: Lightwaves Systems, Inc.
• Inventors: Melick, Bruce D., Baych, Leslie D., Snyder, David M.
• Primary Examiner(s): SEDIGHIAN, REZA
• Application Number:
  US10/963,034
• Publication Number:
  US 20050063708A1
• Time in Patent Office: 1,317 Days
• Field of Search: 398/182, 398/190, 398/191, 398/189, 398/183, 375/246, 375/253, 375/238, 375/239, 375/353
• US Class Current: 398/189
• CPC Class Codes: H04B 1/7176 Data mapping, e.g. modulation
• CPC Class Codes: H04B 10/508 Pulse generation, e.g. generation of solitons
• CPC Class Codes: H04B 10/524 Pulse modulation
• CPC Class Codes: H04B 14/026 using pulse time characteristics modulation, e.g. width, position, interval

Abstract

A method and system for storing and transmitting data using variable pulse symbology over a fiber optic or ultra wide band system. Data is stored in memory, accessed and transformed into an electronic or photonic pulse and/or space which has a variable duration, the duration corresponding to the bit of data to be transmitted. The duration of the pulse and/or space is selected from a list of predetermined durations, each corresponding to a different base 10 number. The pulses and spaces may both be used to represent data, or the spaces may be used for meta data. Variable duration pulses may also be used to store data on an optical storage medium or fiber optic cable.

Claims

1. A method of providing symbology for representing data in transmission of ultra wideband pulses using a baseband signal to increase efficiency of the transmission, comprising:

determining a plurality of subsets of bit sequences within a set of bit sequences;

representing each of the plurality of subsets of bit sequences with a variable duration ultra wideband pulse or a variable ultra wideband duration space unconstrained by time slots;

assigning an ultra wideband pulse duration or an ultra wideband pulse spacing to each of the plurality of subsets of bit sequences wherein each of the plurality of subsets of bit sequences represents a plurality of bits; and

using the ultra wideband pulses and the ultra wideband spaces to transmit data, wherein at least one of the plurality of subsets being represented by one of the ultra wideband pulse durations and an adjacent one of the plurality of subsets being represented by one of the ultra wideband space durations.

2. The method of claim 1 wherein the bit sequences correspond to UNICODE symbology.

3. The method of claim 2 wherein the subset of bit sequences correspond with number symbols 0 to 9.

4. The method of claim 1 wherein the bit sequences correspond to ASCII symbology.

5. The method of claim 4 wherein the subset of bit sequences correspond with number symbols 0 to 9.

6. The method of claim 1 further comprising transmitting the ultra wideband pulses.

7. The method of claim 1 wherein the ultra wideband pulses are photonic ultra wideband pulses.

8. The method of claim 1 wherein the ultra wideband pulses are electronic ultra wideband pulses.

9. A method of providing pulse symbology for representing data in transmission of pulses using a baseband signal in a time-modulated ultra wideband system to increase efficiency of the transmission, comprising:

determining a plurality of subsets of bit sequences wherein each of the plurality of subsets of bit sequences comprise a plurality of bits;

representing each of the plurality of subsets of bit sequences as a variable ultra wideband pulse duration or a variable ultra wideband duration space unconstrained by time slots;

assigning a single ultra wideband pulse duration or a single ultra wideband pulse spacing to each of the plurality of subsets of bit sequences to thereby represent data;

transmitting data from the time modulated ultra wideband system using the ultra wideband pulses and the ultra wideband spaces; and

wherein at least one of the plurality of subsets being represented by an ultra wideband pulse duration and an adjacent one of the plurality of subsets being represented by an ultra wideband space duration.

10. The method of claim 9 wherein both single variable duration ultra wideband pulses and single variable duration ultra wideband spaces represent bit sequences.

11. The method of claim 9 wherein the transmission comprise a continuous plurality of ultra wideband pulse and ultra wideband spaces, the ultra wideband pulses each having a single variable duration associated with one of the bit sequence and the ultra wideband spaces each having a single variable duration associated with one of the bit sequences.

12. The method of claim 9 wherein the bit sequences correspond to UNICODE symbology.

13. The method of claim 9 wherein the bit sequences correspond to number symbols 0 to 9.

14. The method of claim 9 wherein the bit sequences correspond to ASCII symbology.

15. The method of claim 9 further comprising transmitting the ultra wideband pulses.

16. A method of providing pulse symbology for representing data in transmission of ultra wideband pulses in a baseband signal of a time-modulated ultra wideband system to increase efficiency of the transmission, comprising:

representing character symbols using number symbols 0 to 9;

representing each of the number symbols 0 to 9 with a single duration ultra wideband space that is variable or a single duration ultra wideband pulse that is variable to thereby represent data using ultra wideband pulses for use in the time-modulated ultra wideband system;

transmitting using the time-modulated ultra wideband system a baseband signal transmission comprised of single duration ultra wideband spaces and single duration ultra wideband pulses, each of the single duration ultra wideband spaces and the single duration ultra wideband pulses representing one of the number symbols.

17. The method of claim 16 wherein the character symbols are ASCII characters.

18. The method of claim 16 wherein the character symbols are Unicode characters.

19. The method of claim 16 wherein the representing each of the number symbols 0 to 9 with a single duration ultra wideband space that is variable or a single duration ultra wideband pulse that is variable to thereby represent data using ultra wideband pulses for use in the time-modulated ultra wideband system comprises representing each of the number symbols 0 to 9 with the single duration ultra wideband space that is variable and the single duration ultra wideband pulse that is variable to thereby represent data using ultra wideband pulses for use in the time-modulated ultra wideband.

20. A method of providing symbology for representing data in transmission of ultra wideband pulses to increase efficiency of the transmission, comprising:

determining a plurality of subsets of bit sequences within a set of bit sequences;

representing each of the plurality of subsets of bit sequences with a variable duration ultra wideband pulse and a variable duration ultra wideband space;

assigning an ultra wideband pulse duration and an ultra wideband pulse spacing to each of the plurality of subsets of bit sequences wherein each of the plurality of subsets of bit sequences represents a plurality of bits; and

using the ultra wideband pulses and ultra wideband spaces to transmit data, alternating ultra wideband pulses and ultra wideband spaces in a baseband signal.