US Patent No: 4,980,845

Number of patents in Portfolio can not be more than 2000

Digital engine analyzer

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A microprocessor controlled digital engine analyzer recieved analog input signals from an engine being analyzed, engine parameter data entered via a keyboard, and function data, selecting one of several operating modes for the analyzer and which information is to be displayed, entered via the keyboard, and displays on a CRT screen the selected information such as cylinder firing order, RPM, Dwell, KV and DC volts, alphanumerically, information such as primary and secondary ignition and voltage, alternator and fuel injector information through the use of continuous waveform patterns, and additional information pertaining to Dwell, KV and Cylinder Shorting through the use of bar graphs. The waveform pattern data derived from the analog input signals is stored in a dual bank waveform memory and read out for display on the CRT screen under hardware control, and address data representing alphanumeric data and screen formats for the various operating modes to be displayed is stored in a dual bank display memory for application to a character generator, a bank switching arrangement being used for both the waveform memory and the display memory to enable the banks of each memory to be alternately written to and read from. A main microprocessor receives the processes analog input signals, other than the waveform pattern signals, and a display microprocessor receives numerical data from the main microprocessor and causes display of the numerical data on the CRT screen.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
SNAP-ON INCORPORATEDKENOSHA, WI353

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Govekar, Craig F Gurnee, IL 28 226
Putrow, Michael C Racine, WI 11 151

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SPX CORPORATION (2)
4,418,388 Engine waveform pattern analyzer 67 1980
4,476,531 Engine analyzer with digital waveform display 39 1981
 
FORD MOTOR COMPANY (1)
4,259,719 Binary input processing in a computer using a stack 7 1979
 
HEWLETT-PACKARD COMPANY (1)
4,724,518 Odd/even storage in cache memory 35 1987
 
HITACHI, LTD. (1)
4,298,931 Character pattern display system 15 1979
 
Honeywell Information Systems Inc. (1)
4,424,561 Odd/even bank structure for a cache memory 32 1980
 
INTEL CORPORATION (1)
4,695,943 Multiprocessor shared pipeline cache memory with split cycle and concurrent utilization 86 1984
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4,571,671 Data processor having multiple-buffer adapter between a system channel and an input/output bus 45 1983
 
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO (1)
4,375,672 Engine analyzer 32 1980
 
MICRON TECHNOLOGY, INC. (1)
4,818,932 Concurrent memory access system 30 1988
 
NORLAND CORPORATION FORT (1)
4,634,970 Digital waveform processing oscilloscope with distributed data multiple plane display system 29 1983
 
RICOH COMPANY, LTD. (1)
4,816,815 Display memory control system 27 1987
 
ROBERT BOSCH GMBH (1)
4,267,569 Micro-computer system for control and diagnosis of motor vehicle functions 91 1979
 
ROCKWELL INTERNATIONAL CORPORATION (1)
4,496,976 Reduced memory graphics-to-raster scan converter 190 1982
 
SNAP-ON TECHNOLOGIES, INC. (1)
4,394,742 Engine generated waveform analyzer 33 1980
 
SNAP-ON TOOLS CORPORATION (1)
4,337,515 Automotive engine analyzer for indicating a no-connection condition of engine test leads 17 1980
 
The Boeing Company (1)
4,471,348 Method and apparatus for simultaneously displaying data indicative of activity levels at multiple digital test points in pseudo real time and historical digital format, and display produced thereby 71 1982
 
Tokyo Shibaura Denki Kabushiki Kaisha (1)
4,538,232 Electron-beam lithographic apparatus 18 1982
 
TOSHIBA KIKAI KABUSHIKI KAISHA (1)
4,641,252 Electron beam drawing control system 9 1982
 
WPI MICRO PROCESSOR SYSTEMS, INC. (1)
4,602,127 Diagnostic data recorder 100 1984
 
XEROX CORPORATION (1)
4,660,029 Method of providing raster information for a graphics display employing linked lists 28 1984

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SPX CORPORATION (3)
5,631,831 Diagnosis method for vehicle systems 71 1995
6,009,360 Engine analyzer with real-time digital display 10 1996
6,026,344 Diagnosis method for vehicle systems 2 1997
 
FLUKE CORPORATION (1)
5,809,446 Instrument for measuring fuel injection time 4 1996
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
5,497,330 Method for retaining the correction value of a control variable in an engine control device 6 1994
 
NISSAN MOTOR CO., LTD. (1)
5,305,216 Event detector used vehicle control apparatus 14 1991
 
PITNEY BOWES INC. (1)
5,051,924 Method and apparatus for the generation of reports 47 1988
 
ROBERT BOSCH GMBH (1)
7,337,060 Method, computer program and control unit for operating an internal combustion engine 0 2004
 
SNAP-ON TECHNOLOGIES, INC. (1)
5,778,328 Engine analyzer with single-head ignition scope 5 1996
 
TEKTRONIX, INC. (1)
5,214,784 Sequence of events detector for serial digital data which selectively outputs match signal in the series which defines detected sequence 19 1988
 
VETRONIX CORPORATION (1)
7,246,006 Method and systems for determining internal combustion engine cylinder condition 0 2004
 
Other [Check patent profile for assignment information] (1)
6,865,458 Integrated digital control system and method for controlling automotive electric device 9 2002