Patent US5577774A successfully refreshed from Google Patents.
US5577774A
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Method of recording/reproducing data of mesh pattern, and apparatus therefor
Assignee: Intellectual Ventures Holding 81 LLC
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Filing: 1994-02-10
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Granted: 1996-11-26
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Expires: 2014-02-10
Abstract
Abstract A data reading apparatus reads data of dots from a recording sheet on which data is recorded in the form of a mesh pattern, and decodes the read data into binary data. The data reading apparatus has an image sensor to read black/white levels of dots of the mesh pattern using the image sensor and to binarize the read levels by a hardware component or CPU processing according to software. An image can have a high recording density by minimizing a dot size.
Inventors
- 👤 Shigenori Morikawa
- 👤 Takeshi Matsuoka
- 👤 Hiroshi Chikakiyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:54
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/14; G06K7/1404; G06K7/1408; G06K7/1417; G06K19/00; G06K19/06; G06K19/06009; G06K19/06037; G10; G10H; G10H1/00; G10H1/0033; G10H1/0041; G06K2019/06215; G06K2019/06253; G10H2220/00; G10H2220/155; G10H2220/441; G10H2220/445
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A data recording medium in which an image is recorded, which includes a mesh pattern formed of a plurality of one-bit images arranged in a checkerboard pattern, each of said one-bit images having a plurality of dark and light patterns therein, and wherein each of the one-bit images corresponds to a respective one bit of a binary data signal to be recorded and an arrangement of said dark and light patterns in a one-bit image depends on a value of the respective one bit.
Claim 2
Dependent Claim
84 words
A data recording medium in which an image is recorded, which includes a mesh pattern formed of a plurality of one-bit images arranged in a checkerboard pattern, each of said one-bit images having a plurality of dark and light patterns therein, and wherein each of the one-bit images corresponds to a respective one bit of a binary data signal to be recorded and an arrangement of said dark and light patterns in a one-bit image depends on a value of the respective one bit.
Claim 3
Dependent Claim
103 words
A data recording medium in which an image is recorded, which includes a mesh pattern formed of a plurality of one-bit images arranged in a checkerboard pattern, each of said one-bit-images having a plurality of dark and light patterns therein, and wherein each of the one-bit images corresponds to a respective one bit of a binary data signal to be recorded and an arrangement of said dark and light patterns in a one-bit image depends on a value of the respective one bit, said mesh pattern including uniform identifiable boundaries between each of said one-bit images and the dark and light patterns therein.
Claim 4
Dependent Claim
103 words
A data recording medium in which an image is recorded, which includes a mesh pattern formed of a plurality of one-bit images arranged in a checkerboard pattern, each of said one-bit-images having a plurality of dark and light patterns therein, and wherein each of the one-bit images corresponds to a respective one bit of a binary data signal to be recorded and an arrangement of said dark and light patterns in a one-bit image depends on a value of the respective one bit, said mesh pattern including uniform identifiable boundaries between each of said one-bit images and the dark and light patterns therein.
Claim 5
Dependent Claim
69 words
A data recording medium on which an image is formed, which image includes a mesh pattern having a rectangular shape as a whole and including respective encoded bit data formed by selective dark and light areas in said pattern, the image including: first indicia for indicating a vertical data sampling position of said mesh pattern; and second indicia for indicating a horizontal data sampling position of said mesh pattern.
Claim 6
Dependent Claim
69 words
A data recording medium on which an image is formed, which image includes a mesh pattern having a rectangular shape as a whole and including respective encoded bit data formed by selective dark and light areas in said pattern, the image including: first indicia for indicating a vertical data sampling position of said mesh pattern; and second indicia for indicating a horizontal data sampling position of said mesh pattern.
Claim 7
Dependent Claim
19 words
A data recording medium according to claim 3 wherein the dark and light areas are respectively black and white.
Claim 8
Dependent Claim
74 words
A data recording medium on which an image is formed, which image includes a mesh pattern having a rectangular shape as a whole and including respective encoded bit data formed by selective dark and light areas in said pattern, the image including: first indicia for indicating a vertical data sampling position of said mesh pattern; and second indicia for indicating a boundary position of horizontally adjacent dark and light areas of said mesh pattern.
Claim 9
Dependent Claim
74 words
A data recording medium on which an image is formed, which image includes a mesh pattern having a rectangular shape as a whole and including respective encoded bit data formed by selective dark and light areas in said pattern, the image including: first indicia for indicating a vertical data sampling position of said mesh pattern; and second indicia for indicating a boundary position of horizontally adjacent dark and light areas of said mesh pattern.
Claim 10
Dependent Claim
22 words
The data recording medium according to claim 5 wherein the dark and light areas of the image are black and white respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-26 | 2000-05-27 | 2000-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-26 | 2004-05-27 | 2004-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-26 | 2008-05-27 | 2008-11-26 | $7700.00 | Window Closed / Lapsed |