John R Lowdenslager

US Patent:

40559459, Nov 1, 1977

Filed:

Dec 15, 1975

Appl. No.:

5/640665

Inventors:

Jack Schwarzschild - Stamford CT
John R. Lowdenslager - Stamford CT

Assignee:

Timex Corporation - Waterbury CT

International Classification:

G04B 2708

US Classification:

58 855

Abstract:

An electronic horological instrument which includes a piezoelectric crystal oscillator and a counter such as a series of count-down circuits connected in tandem. The "effective frequency of the oscillator" is adjusted by inhibiting the oscillator pulses to the count-down circuits by means of a pulse inhibit circuit. The pulse inhibit circuit is readily programable to inhibit a desired number of oscillator pulses by means of a switch arrangement that includes multi-position detented pin switches.

US Patent:

40220141, May 10, 1977

Filed:

Apr 4, 1975

Appl. No.:

5/508595

Inventors:

John R. Lowdenslager - Stamford CT

Assignee:

Timex Corporation - Waterbury CT

International Classification:

G04B 4700
G04C 300

US Classification:

58 23R

Abstract:

A watch/chronometer/wrist calculator/measurement device contains a crystal or analog precision source of pulse trains which is used to update a clock register serving as an information source and a multipurpose arithmetic accumulator. A manual keyboard provides means for entering decimal numbers into a third or input register to serve as an additional information source. Data entry means are provided for incrementing or decrementing the multipurpose accumulator by the number of units contained in the input register. An additional information source for the accumulator is the chronograph control. Entry means are provided to increment the number contained in the accumulator at a rate controlled by the chronograph control and by the precision source of pulse trains. A display select control provides means to manually switch the display mode between the clock register and the calculator/chronometer function. Additional automatic means is provided to switch the display function between the input register and the accumulator when in the calculator/chronometer mode.

US Patent:

42901308, Sep 15, 1981

Filed:

Dec 21, 1979

Appl. No.:

6/106174

Inventors:

John Lowdenslager - Norwalk CT
Norman C. Zatsky - Southbury CT

Assignee:

Timex Corporation - Waterbury CT

International Classification:

G04B 1712
G04C 1102

US Classification:

368200

Abstract:

A method and apparatus for adjusting the frequency of a piezoelectric crystal oscillator. The effective frequency of the oscillator is adjusted (trimmed) by periodically inhibiting pulses to the divider stage. The pulse inhibit circuit includes a nonvolatile programmable read-only-memory (ROM) to store binary complement information corresponding to the number of oscillator pulses to be suppressed. A counter is periodically preset with the binary complement information and the count advances in response to oscillator pulses. The difference count between the complement number and the counter's maximum count controls the number of pulses periodically suppressed.

US Patent:

48272051, May 2, 1989

Filed:

Dec 21, 1987

Appl. No.:

7/135896

Inventors:

Warren G. Hafner - Lake Carmel NY
John R. Lowdenslager - Bethel CT

Assignee:

Pitney Bowes Inc. - Stamford CT

International Classification:

G05F 146

US Classification:

323281

Abstract:

A voltage regulator fabricated on an integrated circuit chip to provide regulated voltage for the chip assures that the integrated chip is operational before conventionally provided external regulated voltages are available. This enables the integrated circuit chip to be used to monitor the external regulated voltage supplies and prevents latch-up of the integrated circuit due to improper voltages being applied during power sequencing.

US Patent:

42825954, Aug 4, 1981

Filed:

Dec 21, 1979

Appl. No.:

6/106173

Inventors:

John Lowdenslager - Norwalk CT
Norman C. Zatsky - Southbury CT

Assignee:

Timex Corporation - Waterbury CT

International Classification:

G04B 1712
G04B 1700

US Classification:

368200

Abstract:

A method and apparatus for adjusting the frequency of piezoelectric crystal oscillator. The effective frequency of the oscillator is adjusted (trimmed) by periodically inhibiting pulses to the divider stage. The pulse inhibit circuit includes a nonvolatile programmable read-only-memory (ROM) to store binary complement information corresponding to the number of oscillator pulses to be suppressed. A counter is periodically preset with the binary complement information and the count advances in response to oscillator pulses. The difference count between the complement number and the counter's maximum count controls the number of pulses periodically suppressed. During manufacture/assembly of the timepiece, the ROM is programmed to contain the desired complement information.

US Patent:

43863515, May 31, 1983

Filed:

Dec 20, 1980

Appl. No.:

6/218851

Inventors:

John R. Lowdenslager - Wilton CT

Assignee:

Timex Corporation - Waterbury CT

International Classification:

G09G 328

US Classification:

340768

Abstract:

A two-dimensional traveling display method and apparatus for displaying data that may be continuously or intermittently changing in a manner of a traveling sign with the traveling display moving either left, right, up or down depending upon a desired format. The display comprises an electrically actuated two-dimensional dot matrix display panel formed by a plurality of rows and columns of dot-like areas whose light modifying characteristics are changed by application of electrical energization potentials. The panel is provided with respective sets of row and column electrodes for selective application of energization potentials to selected ones of the dot-like areas to form a desired image. A display matrix driver circuit comprised by a two-dimensional shift register is provided for selectively applying electrical energization potential to the row and column electrodes of the two-dimensional dot matrix display panel in accordance with data whose image is to be displayed and which is stored in the shift register. The individual cells of the shift register are applied to either the column or row electrodes of the display panel and a time division multiplexing circuit provides discrete waveform multiplexing electric signals unique to particular ones or the other of either the row or column electrodes for causing desired ones of the dot-like areas of a liquid crystal display to be energized in accordance with data whose image is to be presented and for moving the image left, right, up or down in the manner of a traveling sign.

US Patent:

43945406, Jul 19, 1983

Filed:

May 18, 1981

Appl. No.:

6/264723

Inventors:

Alan E. Willis - Stamford CT
John R. Lowdenslager - Stamford CT
Neal Goldstein - Middletown CT

Assignee:

Timex Corporation - Waterbury CT

International Classification:

H04M 1108

US Classification:

179 2AM

Abstract:

A meter reader is disclosed for automatically reading utility meters at a telephone subscriber station and transmitting the meter data read to a central office over non-dedicated telephone lines in response to a call initiated by the central office. The meter reader is located at the subscriber station and includes, a microprocessor, a telephone isolating device, a call answering device, a ring detector, an off-hook detector, a ring generator, a data transmitter-receiver device and a modem. Each day the telephone is isolated from the telephone lines for a predetermined data access time. Any call made to the subscriber station during the data access time is answered by the meter reader. A coded signal is sent out over the telephone lines by the meter reader for the purpose of determining the source of the call. If the call is from the central office a coded reply signal is sent back and, the meter reader transmits the data to the central office.

US Patent:

42790280, Jul 14, 1981

Filed:

Oct 10, 1979

Appl. No.:

6/083434

Inventors:

John Lowdenslager - Norwalk CT
Alan E. Willis - Stamford CT

Assignee:

Timex Corporation - Waterbury CT

International Classification:

G04B 4700

US Classification:

368 11

Abstract:

A solid state digital watch and barometric pressure indicator having a sealed quartz crystal and a second unsealed quartz crystal which changes frequency with atmospheric pressure changes. The frequency variation of the unsealed quartz crystal is measured over a selected (interrogation) period and some number proportional to the frequency variation, which is indicative of the magnitude of atmospheric pressure change, is displayed with an appropriate sign to indicate increasing or decreasing atmospheric pressure.