Engine tester display and printing techniques
First Claim
1. Apparatus for analyzing an internal combustion engine and for recording the results of the analysis comprising:
- means connectable to the engine for generating when properly enabled first and second digital measurement signals corresponding to first and second engine conditions;
display means having a face for displaying at a first display location on the face a first number indicative of the first engine condition and for displaying at a second display location on the face a second number indicative of the second engine condition;
printer means for printing on a sheet at a first print location said first number and for printing on said sheet at a second print location said second number;
main memory means for storing a first display address signal corresponding to the first display location and first print location and for storing a second address signal corresponding to the second display location and second print location;
display controller means for enabling the display means to display the first number at the first display location in response to the first display address signal and a first digital display signal corresponding to the value of said first engine condition, and for enabling the display means to display the second number at the second display location in response to the second display address signal and a second digital display signal corresponding to the value of said second engine condition;
printer controller means for enabliing the printer means to print the first number at the first print location in response to the first display address signal and said first display address signal and said first digital display signal, and for enabling the printer means to print the second number at the second print location in response to the second display addresss signal and the second digital display signal; and
processor means for enabling the means connectable to the engine to generate the first and second digital measurement signals for altering the value of the first and second digitial measurement signals to produce the first and second digital display signals, for transmitting the first digital display signal and first display address signal to the display controller means and printer controller means during a first time period, and for transmitting the second digital display signal and the second display address signal to the display controller means and printer controller means during a second time period, whereby the values of the first and second engine conditions are displayed in numerical form on the face of the display means and are printed on the sheet in order to create a permanent record.
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Accused Products
Abstract
The disclosure describes an improved apparatus and method for displaying and printing the results of an analysis of an internal combustion engine. The results simultaneously are displayed on a cathode ray tube (CRT) face and are written into a buffer memory of a printer. An operator can move a cursor to the line of the CRT display for which special printing is desired. By pushing an ENTER switch, the operator causes a problem flag to be displayed on the screen at the desired line. The information displayed on the CRT face then is printed, together with an additional message indicating a possible vehicle problem. The line designated by the problem flag is printed in a modified ink color to indicate the source of the possible vehicle problem.
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Citations
16 Claims
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1. Apparatus for analyzing an internal combustion engine and for recording the results of the analysis comprising:
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means connectable to the engine for generating when properly enabled first and second digital measurement signals corresponding to first and second engine conditions; display means having a face for displaying at a first display location on the face a first number indicative of the first engine condition and for displaying at a second display location on the face a second number indicative of the second engine condition; printer means for printing on a sheet at a first print location said first number and for printing on said sheet at a second print location said second number; main memory means for storing a first display address signal corresponding to the first display location and first print location and for storing a second address signal corresponding to the second display location and second print location; display controller means for enabling the display means to display the first number at the first display location in response to the first display address signal and a first digital display signal corresponding to the value of said first engine condition, and for enabling the display means to display the second number at the second display location in response to the second display address signal and a second digital display signal corresponding to the value of said second engine condition;
printer controller means for enabliing the printer means to print the first number at the first print location in response to the first display address signal and said first display address signal and said first digital display signal, and for enabling the printer means to print the second number at the second print location in response to the second display addresss signal and the second digital display signal; andprocessor means for enabling the means connectable to the engine to generate the first and second digital measurement signals for altering the value of the first and second digitial measurement signals to produce the first and second digital display signals, for transmitting the first digital display signal and first display address signal to the display controller means and printer controller means during a first time period, and for transmitting the second digital display signal and the second display address signal to the display controller means and printer controller means during a second time period, whereby the values of the first and second engine conditions are displayed in numerical form on the face of the display means and are printed on the sheet in order to create a permanent record. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process automatically carried out by apparatus for analyzing an internal combustion engine and for creating a record of a portion of the analysis which indicates an engine problem comprising the steps of:
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electronically generating first and second digital measurement signals corresponding to first and second engine conditions; displaying a first number indicative of the first engine condition and a second number indicative of the second engine condition; moving a cursor adjacent a selected one of the first or second numbers which appears to indicate an engine problem; generating a flag control signal when the cursor is adjacent the selected one of the first or second numbers; displaying a flag adjacent the selected one of the first or second numbers in response to the flag control signal; storing a flag print signal identifying the selected one of the first or second numbers; and printing the first and second numbers, the selected one of said numbers being distinctively identified by the printing. - View Dependent Claims (13, 14, 15, 16)
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Specification