Issued Patents All Time
Showing 25 most recent of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7534994 | Laser scanning system employing laser mode switching using a binary mode switching signal | — | 2009-05-19 |
| 7407103 | Bioptical holographic laser scanning system | LeRoy Dickson, John Groot, Timothy Good | 2008-08-05 |
| 7395968 | Laser scanning based bar code symbol reading system for producing a 3-D scanning volume substantially free of spatially and temporally coincident laser scanning planes | LeRoy Dickson, John Groot, C. Harry Knowles | 2008-07-08 |
| 7227115 | Method of and system for detecting and correcting mode switching in diffractive-based laser scanning systems | — | 2007-06-05 |
| 7207492 | Laser scanning bar code symbol reader employing variable passband filter structures having frequency response characteristics controlled by time-measurement of laser-scanned bar code symbol elements | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson | 2007-04-24 |
| 7152796 | Bar code symbol scanning system having multiple scanning stations for producing a 3-D scanning volume free of substantially and temporally coincident scanning planes | LeRoy Dickson, John Groot, C. Harry Knowles | 2006-12-26 |
| 7051922 | Compact bioptical laser scanning system | LeRoy Dickson, John Groot, Timothy Good | 2006-05-30 |
| 6991167 | Bioptical laser scanning system providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale (POS) station | LeRoy Dickson, John Groot, Timothy Good | 2006-01-31 |
| 6840449 | Laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes | LeRoy Dickson, John Groot, C. Harry Knowles | 2005-01-11 |
| 6758402 | Bioptical holographic laser scanning system | LeRoy Dickson, John Groot, Timothy Good | 2004-07-06 |
| 6686586 | Diffractive-based laser scanning system employing microcontroller programmed for mode-switching correction in response to binary mode switching signal generation | — | 2004-02-03 |
| 6616040 | ANALOG SCAN DATA SIGNAL PROCESSOR EMPLOYING A TIME-DOMAIN SUBSTRATE NOISE FILTER FOR NON-LINEARLY PROCESSING ANALOG SCAN DATA SIGNALS AND REDUCING SUBSTRATE NOISE SIGNAL LEVELS THEREIN PRIOR TO FIRST DERIVATIVE SIGNAL GENERATION AND PROCESSING OPERATIONS CARRIED OUT WITHIN SAID ANALOG SCAN DATA SIGNAL PROCESSOR | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu | 2003-09-09 |
| 6588663 | MULTI-FOCAL LASER SCANNING BAR CODE SYMBOL READING SYSTEM EMPLOYING A SCAN DATA SIGNAL PROCESSOR HAVING A VARIABLE PASS-BAND FILTER STRUCTURE WITH FREQUENCY CHARACTERISTICS CONTROLLED BY MEASURING THE BEAM SPOT SPEED OF THE LASER SCANNING BEAM PRODUCING THE ANALOG SCAN DATA SIGNAL BEING PROCESSED BY SAID SCAN DATA SIGNAL PROCESSOR | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson | 2003-07-08 |
| 6581835 | METHOD OF AND SYSTEM FOR SCANNING BAR CODE SYMBOLS USING A LASER SCANNING PATTERN HAVING MULTIPLE FOCAL ZONES, WHEREIN THE MINIMUM BEAM DIMENSION/MINIMUM BAR WIDTH (MBD/MBW) RATIO IS GREATER THAN OR EQUAL TO 2.0 | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson | 2003-06-24 |
| 6572018 | METHOD OF AND APPARATUS FOR PROCESSING ANALOG SCAN DATA SIGNALS DERIVED BY SCANNING BAR CODE SYMBOLS USING A LASER BEAM, WHEREIN A REAL-TIME BAR CODE ELEMENT DETECTOR IS USED TO CONTROL THE DETECTION OF ZERO-CROSSINGS OCCURRING IN THE SECOND DERIVATIVE OF SAID ANALOG SCAN DATA SIGNALS | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu | 2003-06-03 |
| 6540139 | MULTI-FOCAL LASER SCANNING BAR CODE SYMBOL READING SYSTEM EMPLOYING A VARIABLE SECOND DERIVATIVE SIGNAL PASS-BAND FILTER STRUCTURE HAVING FREQUENCY CHARACTERISTICS THAT ARE CONTROLLED IN A REAL-TIME MANNER BY DETECTING BAR CODE ELEMENTS IN ANALOG SCAN DATA SIGNALS PRODUCED BY SAID SYSTEM | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson | 2003-04-01 |
| 6530522 | Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes | LeRoy Dickson, John Groot, C. Harry Knowles | 2003-03-11 |
| 6527186 | Scan data signal processor employing band-pass filter having frequency response characteristics controlled by the depth of focus of the laser scanning beam | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu | 2003-03-04 |
| 6499661 | MULTI-FOCAL LASER SCANNING BAR CODE SYMBOL READING SYSTEM EMPLOYING A SCAN DATA SIGNAL PROCESSOR HAVING A VARIABLE PASS-BAND FILTER STRUCTURE WITH FREQUENCY CHARACTERISTICS CONTROLLED BY DETECTING THE FOCAL DISTANCE OF THE LASER SCANNING BEAM PRODUCING THE ANALOG SCAN DATA SIGNAL BEING PROCESSED BY SAID DATA SIGNAL PROCESSOR | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson | 2002-12-31 |
| 6494377 | METHOD OF AND APPARATUS FOR PROCESSING ANALOG SCAN DATA SIGNALS DERIVED WHILE SCANNING A BAR CODE SYMBOL USING A LASER BEAM, WHEREIN THE DETECTED BEAM SPOT SPEED OF SAID LASER BEAM IS USED TO DYNAMICALLY SWITCH INTO OPERATION OPTIMAL PASS-BAND FILTERING CIRCUITS | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu | 2002-12-17 |
| 6481625 | Laser scanning bar code symbol reader employing variable pass-band filter structures having frequency response characteristics controlled by time-measurement of laser-scanned bar code symbol | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson | 2002-11-19 |
| 6422467 | Reading system a variable pass-band | Mark Lucera, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson | 2002-07-23 |
| 6158659 | Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes | LeRoy Dickson, John Groot, C. Harry Knowles | 2000-12-12 |
| 5109507 | Electronic postage meter having redundant memory | — | 1992-04-28 |
| 4916623 | Electronic postage meter having redundant memory | — | 1990-04-10 |