Robert Lee Dixon

US Patent:

56295081, May 13, 1997

Filed:

Feb 6, 1995

Appl. No.:

8/383937

Inventors:

Raymond Findley - Marietta GA
Robert Dixon - Marietta GA

Assignee:

American Card Technology, Inc. - Marietta GA

International Classification:

G06K 500

US Classification:

235 38R

Abstract:

The present invention pertains to an electronic data access and retrieval system comprising at least first and second smart cards, a first card being encoded with digital data fields representative of predetermined information and a second card including authorization codes for enabling access to and authorized retrieval of selected information from digital data fields of the first card, and includes computer means including display means for displaying the access data. A method is also disclosed of operating an electronic secured access verification display system for displaying an indication of permissable and non-permissable access to a facility of authorized personnel and for verifying the identity of such personnel by providing IDENTITY SMART CARDS, one for each authorized person, and an ACCESS SMART CARD to each authorized operator of the system.

US Patent:

56820607, Oct 28, 1997

Filed:

Apr 24, 1995

Appl. No.:

8/427474

Inventors:

Yingsheng Tung - Plano TX
Robert E. Dixon - Garland TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H01L 2900
H01L 2348
H01L 2940

US Classification:

257533

Abstract:

A method of making an integrated circuit capacitor and/or resistor and the capacitor and/or resistor wherein the method comprises providing an electrically conductive region, preferably highly doped silicon, forming a first electrode of a capacitor, forming a layer of electrically insulating material, preferably silicon oxide, silicon nitride or a combination thereof, over the surface and forming a layer of a metal silicide, preferably titanium silicide, over the layer of electrically insulating material by forming a layer of polysilicon over the layer of electrically insulating material, forming a layer of a metal, preferably titanium, which forms an electrically conductive composition when reacted with polysilicon over the layer of polysilicon, reacting the metal with the polysilicon to form an electrically conductive layer therewith and removing any unreacted metal. In accordance with a second embodiment, wherein both capacitor electrodes are accessible from one side of the capacitor, a portion of the first electrode is exposed and the layer of a metal silicide extends to and contacts the exposed portion of the first electrode. The portion of the layer of metal silicide contacting the first electrode is electrically isolated from a predetermined other portion of the layer of metal silicide which is disposed over the region to form a second electrode.

US Patent:

59797738, Nov 9, 1999

Filed:

May 12, 1997

Appl. No.:

8/854534

Inventors:

Raymond Findley - Marietta GA
Robert Dixon - Marietta GA

Assignee:

American Card Technology, Inc. - Marietta GA

International Classification:

G06K 1906
G06K 500

US Classification:

235492

Abstract:

The present invention pertains to an electronic data access and retrieval system comprising at least first and second smart cards, a first card being encoded with digital data fields representative of predetermined information and a second card including authorization codes for enabling access to and authorized retrieval of selected information from digital data fields of the first card, and includes computer means including display means for displaying the access data. A method is also disclosed of operating an electronic secured access verification display system for displaying an indication of permissible and non-permissible access to a facility of authorized personnel and for verifying the identity of such personnel by providing IDENTITY SMART CARDS, one for each authorized person, and an ACCESS SMART CARD to each authorized operator of the system.

US Patent:

55003877, Mar 19, 1996

Filed:

Feb 16, 1994

Appl. No.:

8/197439

Inventors:

Yingsheng Tung - Plano TX
Robert E. Dixon - Garland TX
Shih-Hsin Ying - Plano TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H01L 218242

US Classification:

437 60

Abstract:

A method of making an integrated circuit containing a capacitor comprising the steps of providing a semiconductor substrate having an active region and an oxide region on the substrate defining the active region, forming a mask on the active region, forming a region of heavily doped polysilicon on the oxide region having a doping level of from about 10 to about 15 ohms/square, removing the mask from the active region, commencing fabrication of an active device in the active region, forming a layer of electrically insulating material over the region of heavily doped polysilicon and a layer of electrically insulating material over the active region, forming a layer of heavily doped polysilicon having a doping level of from about 10 to about 15 ohms/square on the electrically insulating material to complete fabrication of the capacitor and on the active region and completing fabrication of an active device in the active region. More than one capacitor can be formed, this being accomplished by concurrently duplication of the above described process of forming a capacitor on another region of the substrate. The capacitors can have different capacitance by enlarging the insulating layer thereof, this being accomplished either by removal of oxide from or addition of oxide to one of the capacitors to the exclusion of the other during processing.