US5572009A
Expired / Lapsed
US
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Method for encoding a machine-readable measurement scale
Assignee: Trimble Jena GmbH
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Filing: 1994-10-19
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Granted: 1996-11-05
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Expires: 2014-10-19
Abstract
Abstract A method for encoding a machine-readable scale in which a BP code is formed from a P code with length k and whose half-bits and whole bits are alternately provided with light and dark coloring. The method comprises the steps of forming an additional coding by means of a half-bit-by-half-bit comparison of the colors of the half-bit of the BP code of length k with the colors of the bits of a P code of length k+1, and further including the steps of assigning a light or dark coloring to the bits corresponding to their significance, and placing an additional bar with a complementary color of the respective half-bit of the BP code of length k in the center of the respective half-bit alternatively, depending on the agreement or disagreement of colors.
Inventors
- 👤 Klaus Guertler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:05
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/244; G01D5/249; G01D5/2492; G01D5/2495
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
A method for encoding a machine-readable scale using a BP-code which is formed from a first P-code with length k, said BP-code providing half bit pairs each having right- and left-half bits, said half bit pairs corresponding to whole bits of the first P-code, each of said bits being assigned light or dark coloring, said method comprising the steps of: generating a second P-code having a length of k+1, said second P-code providing whole bits having dark and light coloring; comparing the coloring of each half-bit of said BP-code with the coloring of whole bits of said second P-code based upon predetermined relationships to obtain first and second sets of comparison results; assigning coloring to bits of said machine-readable scale based upon said first and second sets of comparison results according to predetermined guidelines.
Claim 2
Independent Claim
134 words
A method for encoding a machine-readable scale using a BP-code which is formed from a first P-code with length k, said BP-code providing half bit pairs each having right- and left-half bits, said half bit pairs corresponding to whole bits of the first P-code, each of said bits being assigned light or dark coloring, said method comprising the steps of: generating a second P-code having a length of k+1, said second P-code providing whole bits having dark and light coloring; comparing the coloring of each half-bit of said BP-code with the coloring of whole bits of said second P-code based upon predetermined relationships to obtain first and second sets of comparison results; assigning coloring to bits of said machine-readable scale based upon said first and second sets of comparison results according to predetermined guidelines.
Claim 3
Dependent Claim
83 words
The method of claim 4 wherein said predetermined relationships comprise: comparing the coloring of the left-half bit of each half bit pair n of the BP-code to the coloring of the whole bit 2n of the second P-code to obtain said first set of comparison results; and comparing the coloring of the right-half bit of each half bit pair n of the BP-code to the coloring of the whole bit 2n+1 of the second P-code to obtain said second set of comparison results.
Claim 4
Dependent Claim
305 words
The method of claim 2 wherein said predetermined guidelines comprise: selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n of the second P-code; selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n of the second P-code and positioning a bar having coloring opposite to the coloring of the of left-half bit of half bit pair n of the BP-code at a center of bit 2n of said machine-readable scale; selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n+1 of the second P-code; and, selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n+1 of the second P-code and positioning a bar having coloring opposite to the coloring of the of right-half bit of half bit pair n of the BP-code at a center of bit 2n+1 of said machine-readable scale.
Claim 5
Dependent Claim
305 words
The method of claim 2 wherein said predetermined guidelines comprise: selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n of the second P-code; selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n of the second P-code and positioning a bar having coloring opposite to the coloring of the of left-half bit of half bit pair n of the BP-code at a center of bit 2n of said machine-readable scale; selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n+1 of the second P-code; and, selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n+1 of the second P-code and positioning a bar having coloring opposite to the coloring of the of right-half bit of half bit pair n of the BP-code at a center of bit 2n+1 of said machine-readable scale.
Claim 6
Dependent Claim
305 words
The method of claim 1 wherein said predetermined guidelines comprise: selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n of the second P-code; selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n of the second P-code and positioning a bar having coloring opposite to the coloring of the of left-half bit of half bit pair n of the BP-code at a center of bit 2n of said machine-readable scale; selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n+1 of the second P-code; and, selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n+1 of the second P-code and positioning a bar having coloring opposite to the coloring of the of right-half bit of half bit pair n of the BP-code at a center of bit 2n+1 of said machine-readable scale.
Claim 7
Dependent Claim
305 words
The method of claim 1 wherein said predetermined guidelines comprise: selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n of the second P-code; selecting the coloring of bit 2n of said machine-readable scale to be the same as the coloring of the left-half bit of half bit pair n of the BP-code when the coloring of the left-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n of the second P-code and positioning a bar having coloring opposite to the coloring of the of left-half bit of half bit pair n of the BP-code at a center of bit 2n of said machine-readable scale; selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code does not match the coloring of the whole bit 2n+1 of the second P-code; and, selecting the coloring of bit 2n+1 of said machine-readable scale to be the same as the coloring of the right-half bit of half bit pair n of the BP-code when the coloring of the right-half bit of half bit pair n of the BP-code matches the coloring of the whole bit 2n+1 of the second P-code and positioning a bar having coloring opposite to the coloring of the of right-half bit of half bit pair n of the BP-code at a center of bit 2n+1 of said machine-readable scale.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1999-11-05 | 2000-05-06 | 2000-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-05 | 2004-05-06 | 2004-11-05 | $3760.00 | Window Closed / Lapsed |
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