System and method of using variable pulses for symbology

• US 7,123,843 B2
• Filed: 06/23/2004
• Issued: 10/17/2006
• 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., Snyder, David M., Baych, Leslie D.
• Primary Examiner(s): SEDIGHIAN, REZA
• Application Number:
  US10/874,652
• Publication Number:
  US 20040234271A1
• Time in Patent Office: 846 Days
• Field of Search: 398/140, 398/141, 398/189, 398/190, 375/353, 375/237, 375/238, 375/239
• 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 transmitting data over cable, the method comprising:

receiving a first plurality of digital bits of data from a memory unit;

receiving a second plurality of digital bits of data from a memory unit;

receiving a third plurality of digital bits of data from a memory unit;

transforming the first plurality of bits of data into a transmission pulse, the transmission pulse having a first pulse duration selected from a set of three or more predetermined pulse durations, one of which is corresponding to the first bits of data;

transforming the third plurality of bits of data into a transmission pulse, the transmission pulse having a third pulse duration selected from a set of three or more predetermined pulse durations, one of which is corresponding to the third plurality of bits of data;

determining the transmission time for the second plurality of bits of data, the transmission time having a duration selected from a set of three or more predetermined durations, one of which is corresponding to the second plurality of bits of data;

transmitting the first transmission pulse;

postponing the transmission of the third transmission pulse by a time equal to the transmission time for the second bits of data; and

transmitting the third transmission pulse.

2. The method of claim 1 wherein the transmission pulses represent data in the form of universal character coding.

3. The method of claim 1 wherein the transmission time represents data in the form of universal character coding.

4. The method of claim 1 wherein the transmission time represents data in the form of meta data.

5. A method of transmitting data over the transmission medium, the method comprising:

receiving a first plurality of digital bits of data from a memory unit;

receiving a second plurality of digital bits of data from a memory unit;

receiving a third plurality of digital bits of data from a memory unit;

transforming the first plurality of bits of data into a transmission pulse of electrical energy, the transmission pulse having a first pulse position selected from a set of three or more predetermined pulse positions, one of which is corresponding to the first plurality of bits of data;

transforming the third plurality of bits of data into a transmission pulse of electrical energy, the transmission pulse having a third pulse position selected from a set of three or more predetermined pulse positions, one of which is corresponding to the third plurality of bits of data;

determining the time of transmission for the second bit of data, the time of transmission having a duration selected from a set of three or more predetermined durations, one of which is corresponding to the second plurality of bits of data;

transmitting the first transmission pulse over a transmission medium;

postponing the transmission of the third transmission pulse by a time equal to the transmission time for the second bits of data; and

transmitting the third transmission pulse over a transmission medium.

6. The method of claim 5 wherein the transmission pulse positions correspond to a number base higher than 2.

7. The method of claim 5 wherein the duration between transmission pulses correspond to a number base higher than 2.

8. The method of claim 5 wherein the transmission pulses represent data in the form of universal character coding.

9. The method of claim 5 wherein the transmission time represents data in the form of universal character coding.

10. The method of claim 5 wherein the transmission time represents data in the form of meta data.