Inventor
Charles M. Riggle
Inventor
Colorado Springs, CO, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer52%
H03MCoding24%
G06FElectric digital data processing10%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock5%
H01FMagnets5%
H04JMultiplex communication5%
PatentTitleYear
6,587,977'o,k,m,/m recording code'20036,185,716'Dual detector read channel with semi-soft detection'20015,724,539'System for selectively storing stripes of data in tracks of disks so that sum of transfer rates of stripes match communication bandwidth to host'19985,588,030'Apparatus and method for the synchronization of data in a bit stream'19965,588,011'Tuned viterbi detector and equalizer system'19965,377,133'System for enhanced implementation of add-compare-select (ACS) functions'19945,134,532'Multiple-disk storage system'19925,107,503'High bandwidth reed-solomon encoding, decoding and error correcting circuit'19925,036,408'High efficiency disk format and synchronization system'19915,016,131'Integral balanced-moment head positioner'19914,968,985'Data demodulation system'19904,622,516'Magnetic tachometer for disk drives'19864,413,339'Multiple error detecting and correcting system employing Reed-Solomon codes'19834,363,056'Disk housing for disk drive mass storage unit'19824,346,416'Rotary actuator assembly for disk drive head positioner'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1998Patents assigned to DIGITAL EQUIPMENT CORP (10)· patent assignee history
1982–1983Based in Acton, MA, US· patent location history
1986–2003Based in Colorado Springs, CO, US· patent location history
1992Patents assigned to RIGGLE CHARLES M (1)· patent assignee history
1992Patents assigned to SVENDSEN PETER R (1)· patent assignee history
1996–2003Patents assigned to MAXTOR CORP (3)· patent assignee history
1996Patents assigned to RIGGLE C M (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DIGITAL EQUIPMENT CORP | 10 | 1982–1998 |
| MAXTOR CORP | 3 | 1996–2003 |
| RIGGLE C Mself | 1 | 1996 |
| RIGGLE CHARLES Mself | 1 | 1992 |
| SVENDSEN PETER R | 1 | 1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Colorado Springs, CO, US | 12 | 1986–2003 |
| Acton, Massachusetts, US | 3 | 1982–1983 |