Resumes
Resumes
Charles Cobeen Phones & Addresses
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3555 Augusta Ave, Phoenix, AZ 85051 (602) 841-8423 (602) 973-6229
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Scottsdale, AZ
Publications
Us Patents
Apparatus For Digital Data Recovery From Mass Storage Devices
View pageUS Patent:
41092368, Aug 22, 1978
Filed:
Jun 17, 1977
Appl. No.:
5/807711
Inventors:
Edward Roald Besenfelder - Phoenix AZ
Steve Garner Cantrell - Glendale AZ
Charles Peter Cobeen - Phoenix AZ
Steve Garner Cantrell - Glendale AZ
Charles Peter Cobeen - Phoenix AZ
Assignee:
Honeywell Information Systems Inc. - Phoenix AZ
International Classification:
G11C 2900
G11B 2700
G11B 2700
US Classification:
3401461F
Abstract:
A digital data recovery apparatus for extracting phase encoded data from mass storage devices is disclosed. By selective strobing of the data string at a frequency determined by the incoming data rate of data already read, a continuously updated data "window" is generated. The data synchronization, clock control and frequency averaging of the previously read data is accomplished without the use of any analog circuitry.
Gcr Data Write Control Apparatus
View pageUS Patent:
42019800, May 6, 1980
Filed:
Dec 26, 1978
Appl. No.:
5/973260
Inventors:
Stanley I. Friedman - Phoenix AZ
Charles P. Cobeen - Phoenix AZ
Herbert K. Jacobsthal - Scottsdale AZ
Charles P. Cobeen - Phoenix AZ
Herbert K. Jacobsthal - Scottsdale AZ
Assignee:
Honeywell Information Systems Inc. - Phoenix AZ
International Classification:
H03K 1324
US Classification:
340347DD
Abstract:
This relates to an apparatus for converting raw data into GCR data and for controlling the recording of GCR data on magnetic tape. An ordered series of instructions is stored in a first programmable read only memory (PROM). A second PROM contains a special character table and a code conversion table, and receives raw data. A third PROM stores addresses which are used to access the second PROM and are indicative of whether raw data is to be converted or a special character is to be generated.