STEPHEN L HAMILTON, II
Electrician at Longmeadow Dr, Garland, TX

4020465, Apr 26, 1977

Dec 26, 1973

5/428492

Michael J. Cochran - Richardson TX
Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

G06F 312, H04L 1524

3401725

A thermal line printer includes a semiconductor chip for control of A. times. N heaters arrayed in N groups past which thermally sensitive paper is stepped B times in printing a line of characters in an A. times. B dot matrix. A sequential access memory stores N multibit words, one word for each character to be printed on a given line with a commutator cyclically to read words from the memory A. times. B times for each line to be printed. A ROM has an A. times. B dot matrix code therein for each available character. A time sequencer and decoder connected to the ROM is synchronized with the commutator to produce a different one bit output from the ROM each time each given word is read from memory. A set of N enable circuits leads from the ROM to N groups of heaters. A set of A enable circuits leads from the sequencer to A groups of heaters where one heater in each A group is from one of the N groups.

4145756, Mar 20, 1979

Dec 6, 1976

5/748076

Michael J. Cochran - Richardson TX
Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

G08B 536

364900

A thermal printer system for actuating a plurality of groups of thermal printing elements. The system includes a first circuit in which a plurality of data words are stored, the words representing the characters to be printed. A second circuit converts the data words into printing character codes. A selected bit from each code, which bit is sequentially altered, is supplied to a third circuit for actuating the printing elements.

4078251, Mar 7, 1978

Oct 27, 1976

5/736272

Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

G06F 1502, G06F 1520

364700

An electronic calculator or microprocessor system of the type preferably having keyboard input and a visual display is implemented with a semiconductor chip having an arithmetic unit, an address register responsive to the input, an instruction word memory for storing a number of instruction words and addressable by the address register, and instruction word decoder logic for decoding the instruction words and for controlling the arithmetic unit in response thereto. The system further preferably includes a plurality of operational registers for storing numeric data received from the input or outputted by the arithmetic unit and a plurality of operational register selector gates coupling the operational registers with the arithmetic unit or with each other. The instruction word decoder logic includes mask logic for generating mask signals to the plurality of operational register selector gates. Thus the instruction word decoder logic decodes instructions for operating selected ones of the plurality of operational registers to effect arithmetic operations by coupling selected operational registers to the arithmetic unit or data exchange operations by coupling selected operational registers together.

4107781, Aug 15, 1978

Oct 27, 1976

5/736001

Johnny M. Barrett - Richardson TX
Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

G06F 920

364700

An electronic calculator or microprocessor system of a type preferably having keyboard input and the visual display is implemented with a semiconductor chip having an arithmetic unit, an address register responsive to the input, an instruction word memory for storing a number of instruction words and addressable in response to the address stored in the address register and an, instruction word decoder circuit for decoding instruction words outputted from the instruction word memory and for controlling the arithmetic unit in response thereto. An indirect addressing system includes an auxiliary register coupled to the output of the arithmetic unit for storing at least a portion of a word of numeric data outputted by the arithmetic unit and a branch logic system responsive to the decoding of a particular instruction word by the instruction word decoder logic for causing the address register to branch to a location defined by the contents of the auxiliary register.

4006455, Feb 1, 1977

Oct 10, 1975

5/622288

Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

G06K 500

3401461F

An error correction system is particularly suitable for user programmable calculators which may be programmed to perform a series of functions on data entries by means of a series of program steps entered into the calculator from a storage media such as recorded magnetic cards or the like. Data is stored in one or more pairs of tracks on the recording media with the first track of each pair for storing binary zeros and a second track of each pair for storing binary ones. Each time a binary zero is present, an alternating transition negative to positive or positive to negative appears on the zero's track of the storage media and each time a one is present an alternating transition negative to positive or positive to negative appears on the one's track of the storage media. For reading the data stored on the storage media, means such as a data latch is provided for each track for storing the direction of the previous transition positive to negative or negative to positive for that track and means for comparing the direction of such previous transition with the direction of the present transition. Whenever it is determined that the state of a bit of data is missing on a pair of tracks, i. e.

4000393, Dec 28, 1976

Aug 29, 1974

5/501919

Michael J. Cochran - Richardson TX
Larry D. Propst - Rowlett TX
Richard D. Harris - Richardson TX
Robert E. Belland - Richardson TX
John W. Richardson - Garland TX
Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

H05B 100

219216

A method of assembling, positioning, and making connections to a thermal printhead is disclosed. A substrate is provided upon which heating elements or mesas are mounted. Leads from these heating elements are continued on the same side of the substrate as the one on which the elements are located. The leads are brought to terminal pads where connections may be made to the logic circuit which selectively energizes the heating elements to form numerals or characters on heat sensitive paper. A flat flexible cable with conductor ends exposed is held in place so that the exposed conductor ends make contact with the terminal pads of one or more of such substrates. The substrates and cable are clamped together by two metal plates. This entire assembly is mounted on a spring-loaded pivot arrangement so as to hold the heating elements against the heat sensitive paper on an advancing platen. Connections may be made between the cable conductors and the printing logic to allow the heating elements to be energized.

4125830, Nov 14, 1978

Feb 17, 1976

5/658793

Michael J. Cochran - Richardson TX
Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

G06K 1518

340336

An alphanumeric display system which may be implemented on one or more semiconductor chips for controlling display devices arrayed in N groups, each group of which comprises an A by B matrix of devices and which is capable of displaying a single alphanumeric character. The display devices in each group are sequentially addressed with display commands being communicated therewith in a predetermined manner to cause the display devices to visually display a predetermined alphanumeric character. Use of the alphanumeric display system herein disclosed, permits a total of A by B by N display devices to be controlled by the display system using as few as A + B + N connecting conductors to control the display devices and associated display driver devices.

4038535, Jul 26, 1977

Jan 5, 1976

5/646463

Bruce E. Aldridge - Dallas TX
Michael J. Cochran - Richardson TX
Lee G. Kitchens - Richardson TX
Robert R. Kressler - Richardson TX
Stephen P. Hamilton - Garland TX

Texas Instruments Incorporated - Dallas TX

G06F 1502

235152

This invention relates to enhancement of calculator versatility through connections provided in a calculator cradle leading to a printing mechanism therein when a calculator is nested in the cradle. In a more specific aspect, the invention relates to the communication between a calculator and a printer module which nests the calculator and responds to instructions and data flow from the calculator to print selected calculator information.

4125901, Nov 14, 1978

Oct 27, 1976

5/736057

Thomas E. Merrow - Dallas TX
Stephen P. Hamilton - Garland TX
Larry L. Miles - Garland TX
Charles P. Grant - late of Dallas TX

Texas Instruments Incorporated - Dallas TX

G06F 748

364736

An electronic calculator or microprocessor system of the type preferably having keyboard input and a visual display is implemented with a semiconductor chip having a arithmetic unit and memory system. The arithmetic unit and memory system include a plurality of operational registers and an arithmetic unit having two inputs and an output. A plurality of operational registers selector gates interconnect the operational registers and arithmetic unit for connecting any selected two of the plurality of operational registers to the inputs of the arithmetic unit. The plurality of operation register selector gates preferably comprise individual MOS transfer gates.