Patent US4878068A successfully refreshed from Google Patents.
US4878068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam recorder having a varying beam intensity for maintaining a true reproduced image
Assignee: Canon Inc
•
Filing: 1987-09-01
•
Granted: 1989-10-31
•
Expires: 2007-09-01
Abstract
Abstract A beam recorder comprises image signal input means, a modulator for modulating a recording beam in accordance with the input image signal, and a discriminator for discriminating a characteristic of the input image signal. The modulator controls a driving current for emitting the beam so that the beam intensity is varied in accordance with the discrimination result.
Inventors
- 👤 Yoshiyuki Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:50
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/409; H04N1/4092; G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1204; G06K15/1209; G06K15/128; H04N1/40062
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
156 words
A beam recorder comprising: image signal input means; modulation means for modulating a recording beam in accordance with an image signal supplied from said input means; and discrimination means for discriminating a characteristic of the image signal supplied from said input means, wherein said discrimination means includes memory means for receiving the image data from said input means for each pixel and for storing data of a pixel under consideration and data of adjacent pixels, and said discrimination means discriminates whether the pixel under consideration is a pixel adjacent to a line or not in accordance with the pixel under consideration and the adjacent pixels, said discrimination means discriminating whether the pixel under consideration is adjacent to a line or not in a plurality of directions; and wherein said modulation means controls a drive current for emitting the beam to change an intensity of the beam in accordance with a discrimination result of said discrimination means.
Claim 2
Dependent Claim
156 words
A beam recorder comprising: image signal input means; modulation means for modulating a recording beam in accordance with an image signal supplied from said input means; and discrimination means for discriminating a characteristic of the image signal supplied from said input means, wherein said discrimination means includes memory means for receiving the image data from said input means for each pixel and for storing data of a pixel under consideration and data of adjacent pixels, and said discrimination means discriminates whether the pixel under consideration is a pixel adjacent to a line or not in accordance with the pixel under consideration and the adjacent pixels, said discrimination means discriminating whether the pixel under consideration is adjacent to a line or not in a plurality of directions; and wherein said modulation means controls a drive current for emitting the beam to change an intensity of the beam in accordance with a discrimination result of said discrimination means.
Claim 3
Dependent Claim
28 words
A beam recorder according to claim 1 wherein said discrimination means discriminates the characteristic for each pixel in accordance with the image signal supplied from said input means.
Claim 4
Dependent Claim
36 words
A beam recorder according to claim 2 wherein said discrimination means discriminates whether the pixel under consideration is a portion of a line or not in accordance with the pixel under consideration and the adjacent pixels.
Claim 5
Dependent Claim
32 words
A beam recorder according to claim 1 further comprising beam generation means adapted to be driven by said modulation means, said beam generation means including a laser diode as a light source.
Claim 6
Dependent Claim
38 words
A beam recorder according to claim 1 wherein said modulation means changes the driving current for emitting the beam in a plurality of steps so that the intensity of the beam is varied in a plurality of steps.
Claim 7
Dependent Claim
114 words
A beam recorder comprising: image signal input means; modulation means for modulating a recording beam in accordance with an image signal supplied from said input means; and discrimination means for discriminating a characteristic of the image signal supplied from said input means, wherein said discrimination means discriminates whether a pixel under consideration is a portion of a line or not by discriminating pixels adjacent the pixel under consideration in a plurality of directions, in accordance with the image signal supplied from said input means, and wherein said modulation means controls a drive current for emitting a beam to change an intensity of the beam in accordance with a discrimination result of said discrimination means.
Claim 8
Dependent Claim
114 words
A beam recorder comprising: image signal input means; modulation means for modulating a recording beam in accordance with an image signal supplied from said input means; and discrimination means for discriminating a characteristic of the image signal supplied from said input means, wherein said discrimination means discriminates whether a pixel under consideration is a portion of a line or not by discriminating pixels adjacent the pixel under consideration in a plurality of directions, in accordance with the image signal supplied from said input means, and wherein said modulation means controls a drive current for emitting a beam to change an intensity of the beam in accordance with a discrimination result of said discrimination means.
Claim 9
Dependent Claim
28 words
A beam recorder according to claim 6 wherein said discrimination means discriminates the characteristic for each pixel in accordance with the image signal supplied from said input means.
Claim 10
Dependent Claim
69 words
A beam recorder according to claim 7 wherein said discrimination means includes memory means for receiving the image signal from said input means for each pixel and for storing data of a pixel under consideration and data of adjacent pixels, and said discrimination means discriminates whether the pixel under consideration is a portion of a line or not in accordance with the pixel under consideration and the adjacent pixels.
Claim 11
Dependent Claim
38 words
A beam recorder according to claim 6 wherein said modulation means changes the driving current for emitting the beam in a plurality of steps so that the intensity of the beam is varied in a plurality of steps.
Claim 12
Dependent Claim
102 words
A beam recorder comprising: image signal input means; modulation means for modulating a recording beam in accordance with an image signal supplied from said input means; and discrimination means for discriminating a characteristic of the image signal applied from said input means, wherein said modulation means controls the recording beam in accordance with a discrimination result of said discrimination means, and wherein said discrimination means discriminates whether a pixel under consideration is associated with a line or not by discriminating pixels adjacent the pixel under consideration in a plurality of directions in response to the image signal supplied from said input means.
Claim 13
Dependent Claim
102 words
A beam recorder comprising: image signal input means; modulation means for modulating a recording beam in accordance with an image signal supplied from said input means; and discrimination means for discriminating a characteristic of the image signal applied from said input means, wherein said modulation means controls the recording beam in accordance with a discrimination result of said discrimination means, and wherein said discrimination means discriminates whether a pixel under consideration is associated with a line or not by discriminating pixels adjacent the pixel under consideration in a plurality of directions in response to the image signal supplied from said input means.
Claim 14
Dependent Claim
72 words
A beam recorder according to claim 10, wherein said discrimination means includes memory means for receiving the image signal from said input means for each pixel and for storing data of the pixel under consideration and data of the adjacent pixels, and wherein said discrimination means discriminates whether the pixel under consideration is a pixel adjacent to a line or not in accordance with the pixel under consideration and the adjacent pixels.
Claim 15
Dependent Claim
71 words
A beam recorder according to claim 10, wherein said discrimination means includes memory means for receiving the image signal from said input means for each pixel and for storing data of the pixel under consideration and data of the adjacent pixels, and wherein said discrimination means discriminates whether the pixel under consideration is a portion of a line or not in accordance with the pixel under construction and the adjacent pixels.
Claim 16
Dependent Claim
36 words
A beam recorder according to claim 10, wherein said modulation means controls a drive current for emitting the beam to change an intensity of the beam in accordance with a discrimination result of said discrimination means.
References Cited (Backward Citations)
US4387983A
Cited
US4517579A
Cited
JPS5681990A
Cited
DE3129109A1
Cited
US4361394A
Cited
DE3212194A1
Cited
US4476474A
Cited
US4558328A
Cited
JPS60210471A
Cited
GB2170372A
Cited
US4677493A
Cited
US4709250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |