David Lewis Hacker

US Patent:

7120319, Oct 10, 2006

Filed:

Feb 28, 2002

Appl. No.:

10/085468

Inventors:

Arvin D. Danielson - Solon IA, US
Dennis A. Durbin - Cedar Rapids IA, US
David C. Hacker - Jacksonville FL, US
Jerry L. Walter - Marion IA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G06K 9/22

US Classification:

382313, 358473

Abstract:

A versatile data handling apparatus providing multiple alternatives for inputting data is disclosed. The apparatus includes an array of depressible keys, a screen-based input system that is located distinctly from the depressible keys, an optical information sensing component and a visual display to present visual information to a user. The data input activities are coordinated by a computerized data handling system communicatively coupled with the various components.

US Patent:

7646941, Jan 12, 2010

Filed:

Jun 27, 2006

Appl. No.:

11/475472

Inventors:

Arvin D. Danielson - Solon IA, US
Dennis A. Durbin - Cedar Rapids IA, US
David C. Hacker - Jacksonville FL, US
Jerry L. Walter - Marion IA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G06K 9/22
G06K 7/10

US Classification:

382313, 382193, 23546225

Abstract:

A data capturing module combined with a portable data terminal of the hand-held type to record handwritten data. Using a digitized pad, the module can provide for direct input of handwritten data into the system, or a peripheral digital scanner can be employed to provide for data entry. Depending upon the particular application, the module therefore provides for data entry of handwritten text or graphics using the data terminal and other components of a portable data system to enter, display, print or otherwise communicate the handwritten data.

US Patent:

47163542, Dec 29, 1987

Filed:

Nov 12, 1985

Appl. No.:

6/797235

Inventors:

David C. Hacker - Cedar Rapids IA

Assignee:

Norand Corporation - Cedar Rapids IA

International Classification:

H02J 704

US Classification:

320 39

Abstract:

In an exemplary embodiment, a battery conditioning system monitors battery conditioning and includes a memory for storing data based thereon; for example, data may be stored representative of available battery capacity as measured during a deep discharge cycle. With a microprocessor monitoring battery operation of a portable unit, a measure of remaining battery capacity can be calculated and displayed. Where the microprocessor is permanently secured to the battery so as to receive operating power therefrom during storage and handling, the performance of a given battery in actual use can be accurately judged since the battery system can itself maintain a count of accumulated hours of use and other relevant parameters. Where an embodiment includes a main battery and a backup battery, the voltage of each may be individually measured, and each may be conditioned. Battery capacity of each may be measured.

US Patent:

47092025, Nov 24, 1987

Filed:

Jun 19, 1986

Appl. No.:

6/876194

Inventors:

Steven E. Koenck - Cedar Rapids IA
David C. Hacker - Cedar Rapids IA

Assignee:

Norand Corporation - Cedar Rapids IA

International Classification:

H02J 700

US Classification:

320 43

Abstract:

In an exemplary embodiment, a battery conditioning system monitors battery conditioning and includes a memory for storing data based thereon; for example, data may be stored representative of available battery capacity as measured during a deep discharge cycle. With a microprocessor monitoring battery operation of a portable unit, a measure of remaining battery capacity can be calculated and displayed. Where the microprocessor is permanently secured to the battery so as to receive operating power therefrom during storage and handling, the performance of a given battery in actual use can be accurately judged since the battery system can itself maintain a count of accumulated hours of use and other relevant parameters. Where an embodiment includes a main battery and a backup battery, the voltage of each may be individually measured, and each may be conditioned. Battery capacity of each may be measured.

US Patent:

48454192, Jul 4, 1989

Filed:

Oct 6, 1987

Appl. No.:

7/107494

Inventors:

David C. Hacker - Cedar Rapids IA

Assignee:

Norand Corporation - Cedar Rapids IA

International Classification:

H02J 704

US Classification:

320 39

Abstract:

In a system including volatile memory, a battery backed memory may be available for preserving data in the event of a power failure. Low power condition is reliably sensed sufficiently in advance of supply voltage falling below a minimum operating voltage range so as to give an adequate time interval, e. g. 2. 5 milliseconds for the saving of application operating system status. By using a voltage regulator signal which switches in a particularly sensitive manner toward a saturation or zero state well outside its normal control range to trigger a low power signal, such low power signal may provide a time interval of, e. g. from three to six milliseconds of advance warning of impending supply voltage failure. The system is particularly useful for hand-held data processing systems with rechargeable batteries since the regulator may provide its regulator signal as a common control signal for regulating multiple supply paths, and may only trigger the low power signal when all of such supply paths approach a failure condition.