Patent US4123765A successfully refreshed from Google Patents.
US4517606A
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US
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Apparatus for processing video signals
Assignee: Canon Inc
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Filing: 1984-09-21
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Granted: 1985-05-14
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Expires: 2004-09-21
Abstract
Abstract A video signal processing apparatus for encoding video into binary signals employs dither coding. The apparatus comprises a device for setting a plural number of divided areas of an original image and a processing circuit for processing video signals corresponding to the respective divided areas using different dither patterns.
Inventors
- 👤 Yoshikazu Yokomizo
- 👤 Takehiko Shibata
- 👤 Katsuichi Shimizu
- 👤 Ken Miyagi
- 👤 Akira Suzuki
- 👤 Tadashi Yoshida
- 👤 Masaharu Tsukata
- 👤 Koichi Murakami
- 👤 Nao Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:52
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40062; H04N1/405; H04N1/4055
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
62 words
A video signal processing apparatus for providing binary encoded video signals employing a dither coding system, said apparatus comprising: means for reading an original image; area setting means for dividing an original image into plural unequal areas; and processing means for providing binary encoded signals for video signals from said reading means employing different dither patterns for each of said plural areas.
Claim 2
Dependent Claim
62 words
A video signal processing apparatus for providing binary encoded video signals employing a dither coding system, said apparatus comprising: means for reading an original image; area setting means for dividing an original image into plural unequal areas; and processing means for providing binary encoded signals for video signals from said reading means employing different dither patterns for each of said plural areas.
Claim 3
Dependent Claim
39 words
A video signal processing apparatus according to claim 1, wherein said processing means comprises memory means for registering therein a plural number of dither patterns and a selector means for selecting said dither patterns corresponding to said areas respectively.
Claim 4
Dependent Claim
24 words
A video signal processing apparatus according to claim 2, wherein said memory means has one or more dither patterns containing character patterns registered therein.
Claim 5
Dependent Claim
23 words
A video signal processing apparatus according to claim 1, wherein said video signal is an analog signal which has read said original image.
Claim 6
Dependent Claim
27 words
A video signal processing apparatus according to claim 4, wherein said apparatus further comprises an A/D converting circuit for converting said analog signal into a digital signal.
Claim 7
Dependent Claim
42 words
A video signal processing apparatus according to claim 1, wherein said processing means includes a discriminating means for discriminating whether or not the video signal being put out is a video signal derived from the area divided by said area setting means.
Claim 8
Dependent Claim
58 words
A video signal processing apparatus according to claim 6, wherein said discriminating means comprises a memory for registering therein the vertical and horizontal coordinates of said set area and a means for comparing the output signal from said memory with the signal indicative of the vertical and horizontal coordinate position of the video signal now being put out.
Claim 9
Dependent Claim
24 words
A video signal processing apparatus according to claim 1, wherein a coordinate setting device with key input is used as said area setting means.
Claim 10
Dependent Claim
24 words
A video signal processing apparatus according to claim 1, wherein a coordinate setting device with a digitizer is used as said area setting means.
Claim 11
Dependent Claim
36 words
A video signal processing apparatus according to claim 1, wherein one of said dither patterns is a dither pattern suitable for reproduction of halftones and the other is a dither pattern suitable for reproduction of characters.
Claim 12
Dependent Claim
27 words
A video signal processing apparatus according to claim 10, wherein said dither pattern suitable for reproduction of character has a threshold level fixed to a determined value.
Claim 13
Dependent Claim
31 words
A video signal processing apparatus according to claim 1 further comprising means for indicating a dither pattern associated with each respective one of the areas set by said area setting means.
Claim 14
Dependent Claim
97 words
A video signal processing apparatus comprising: means for generating video signals; means for selecting a character; means for generating threshold signals; and binary encoding means for comparing said video signal with said threshold signal to produce a binary encoded signal, wherein said threshold signal generating means produces, according to the output of said character selecting means, a threshold signal equal to or larger than the maximum value of the video signal for the character portion and a threshold signal equal to or smaller than the minimum value of the video signal for the portion near the character.
Claim 15
Dependent Claim
97 words
A video signal processing apparatus comprising: means for generating video signals; means for selecting a character; means for generating threshold signals; and binary encoding means for comparing said video signal with said threshold signal to produce a binary encoded signal, wherein said threshold signal generating means produces, according to the output of said character selecting means, a threshold signal equal to or larger than the maximum value of the video signal for the character portion and a threshold signal equal to or smaller than the minimum value of the video signal for the portion near the character.
Claim 16
Dependent Claim
38 words
A video signal processing apparatus according to claim 13, wherein said threshold signal generating means produces a signal of the intermediate level of the video signal for other portions than said character portion and portion near the character.
Claim 17
Dependent Claim
23 words
A video signal processing apparatus according to claim 13, wherein said threshold signal generating means has one or more dither matrixes registered therein.
Claim 18
Dependent Claim
107 words
A video signal processing apparatus comprises: means for reading an original image and generating image information; means for manually setting an arbitrary image area of said original image by inputting vertical and horizontal coordinates; and processing means for effecting a binary coding processing for image information of the image area set by said area setting means, wherein said processing means effecting a first halftone processing for the image information within the area set by said area setting means, and a second halftone processing for image information out of the area set by said area setting means, said second halftone processing being different from said first halftone processing.
Claim 19
Dependent Claim
107 words
A video signal processing apparatus comprises: means for reading an original image and generating image information; means for manually setting an arbitrary image area of said original image by inputting vertical and horizontal coordinates; and processing means for effecting a binary coding processing for image information of the image area set by said area setting means, wherein said processing means effecting a first halftone processing for the image information within the area set by said area setting means, and a second halftone processing for image information out of the area set by said area setting means, said second halftone processing being different from said first halftone processing.
Claim 20
Dependent Claim
28 words
A video signal processing apparatus according to claim 16, wherein said area setting means sets the image area with a plurality of pairs of vertical and horizontal coordinates.
Claim 21
Dependent Claim
26 words
A video signal processing apparatus according to claim 17, wherein said area setting means sets the image area with two pairs of vertical and horizontal coordinates.
Claim 22
Dependent Claim
26 words
A video signal processing apparatus according to claim 16, wherein said processing means effecting a binary coding processing for said image information for a halftone reproduction.
Claim 23
Dependent Claim
42 words
A video signal processing apparatus according to claim 19, wherein said processing means has a plurality of threshold groups for the different halftone reproduction, and selects one of the threshold groups in accordance with an area designation of said area setting means.
Claim 24
Dependent Claim
68 words
A video signal processing apparatus comprising: means for entering image information; storage means for storing plural threshold groups comprising a plurality of thresholds; means for discriminating a character area of the image information; and processing means for effecting a binary coding processing for the image information in the area discriminated by said discriminating means in accordance with one of said threshold groups read out from said storage means.
Claim 25
Dependent Claim
68 words
A video signal processing apparatus comprising: means for entering image information; storage means for storing plural threshold groups comprising a plurality of thresholds; means for discriminating a character area of the image information; and processing means for effecting a binary coding processing for the image information in the area discriminated by said discriminating means in accordance with one of said threshold groups read out from said storage means.
Claim 26
Dependent Claim
20 words
A video signal processing apparatus according to claim 21, wherein said storage means stores a threshold group for halftone reproduction.
Claim 27
Dependent Claim
30 words
A video signal processing apparatus according to claim 22, wherein said processing means effects a binary coding processing for halftone reproduction for the image information out of said character area.
Claim 28
Dependent Claim
27 words
A video signal processing apparatus according to claim 21, wherein said processing means has means for comparing said image information and the thresholds from said storage means.
Claim 29
Dependent Claim
39 words
A video signal processing apparatus according to claim 21, wherein said storage means stores a threshold group comprising a plurality of the same level of thresholds for providing binary encoded signals for the image information in the character area.
Claim 30
Dependent Claim
17 words
A video signal processing apparatus according to claim 21 further comprising means for setting said character area.
Claim 31
Dependent Claim
49 words
A video signal processing apparatus comprising: input means for entering image information; setting means for setting a plurality of desired arbitrary areas of image; and processing means for effecting a desired image processing for respective image information of the plurality of areas of image set by said setting means.
Claim 32
Dependent Claim
49 words
A video signal processing apparatus comprising: input means for entering image information; setting means for setting a plurality of desired arbitrary areas of image; and processing means for effecting a desired image processing for respective image information of the plurality of areas of image set by said setting means.
Claim 33
Dependent Claim
31 words
A video signal processing apparatus according to claim 27, wherein said input means is means for reading out an original image, and said setting means sets an area of an original.
Claim 34
Dependent Claim
34 words
A video signal processing apparatus according to claim 27, wherein said processing means effects different image processing for image information in each of the plurality of areas of image set by said setting means.
Claim 35
Dependent Claim
58 words
A video signal processing apparatus according to claim 27, wherein said processing means effects a first halftone processing for the image information within the area set by said setting means, and a second halftone processing for image information out of the area set by said setting means, said second halftone processing being different from said first halftone processing.
Claim 36
Dependent Claim
35 words
A video signal processing apparatus according to claim 27 further comprising means for selecting an image processing mode associated with each respective one of said plurality of areas of image set by said setting means.
Claim 37
Dependent Claim
25 words
A video signal processing apparatus according to claim 27 wherein said setting means sets the image area with two pairs of vertical and horizontal coordinates.
Claim 38
Dependent Claim
103 words
A video signal processing apparatus comprising: means for reading an original image; means for setting different binary encoding modes for each of plural unequal areas of an original; and processing means for providing different binary encoded signals for each such area for video signals from said reading means in accordance with the mode set by said setting means, said processing means having memory means which has stored thresholds for halftone reproduction, and said processing means performing a binary encoding processing for halftone reproduction, using the thresholds stored in said memory means, for the video signal from at least one of said plural areas.
Claim 39
Dependent Claim
103 words
A video signal processing apparatus comprising: means for reading an original image; means for setting different binary encoding modes for each of plural unequal areas of an original; and processing means for providing different binary encoded signals for each such area for video signals from said reading means in accordance with the mode set by said setting means, said processing means having memory means which has stored thresholds for halftone reproduction, and said processing means performing a binary encoding processing for halftone reproduction, using the thresholds stored in said memory means, for the video signal from at least one of said plural areas.
Claim 40
Dependent Claim
47 words
A video signal processing apparatus according to claim 33 wherein said memory means has a plurality of threshold groups to provide binary encoded signals for said video signals and processing means selects one of said threshold groups in accordance with the mode set by said setting means.
Claim 41
Dependent Claim
23 words
A video signal processing apparatus according to claim 33 further comprising area setting means for setting a desired area of said original image.
Claim 42
Dependent Claim
23 words
A video signal processing apparatus according to claim 33 wherein said processing means includes means for detecting the area of said original image.
Claim 43
Dependent Claim
98 words
A video signal processing apparatus comprising: means for reading on original image to generate a video signal; means for designating a desired arbitrary area of an original image by inputting plural coordinates; and processing means for processing the video signal generated by said reading means wherein said processing means process the video signal from the area designated by said designating means and the video signal from an area other than the designated area differently from each other, said processing means performing a binary encoding processing for halftone reproduction for the video signal at least from the designated area.
Claim 44
Dependent Claim
98 words
A video signal processing apparatus comprising: means for reading on original image to generate a video signal; means for designating a desired arbitrary area of an original image by inputting plural coordinates; and processing means for processing the video signal generated by said reading means wherein said processing means process the video signal from the area designated by said designating means and the video signal from an area other than the designated area differently from each other, said processing means performing a binary encoding processing for halftone reproduction for the video signal at least from the designated area.
Claim 45
Dependent Claim
25 words
A video signal processing apparatus according to claim 37 wherein said designating means has key switches for designating the desired area of said original image.
Claim 46
Dependent Claim
34 words
A video signal processing apparatus according to claim 37 wherein said processing means includes means for identifying whether or not the video signal is read out from the area designated by said designating means.
Claim 47
Dependent Claim
23 words
A video signal processing apparatus according to claim 37 wherein said processing means includes means for storing a threshold group for halftone reproduction.
Claim 48
Dependent Claim
23 words
A video signal processing apparatus according to claim 37 wherein said processing means also provides a binary encoding processing for character image reproduction.
Claim 49
Dependent Claim
96 words
A video signal processing apparatus comprising: means for entering a video signal; means for generating different thresholds for providing a binary encoded signal for the video signal entered from said entering means; means for designating, by inputting plural coordinates, an arbitrary portion of said video signal for processing by employing the different thresholds from said generating means; and processing means for providing binary encoded signals for the video signals entered from said entering means employing the plural thresholds from said generating means, wherein at least one of the plural thresholds is used for a halftone reproduction.
Claim 50
Dependent Claim
96 words
A video signal processing apparatus comprising: means for entering a video signal; means for generating different thresholds for providing a binary encoded signal for the video signal entered from said entering means; means for designating, by inputting plural coordinates, an arbitrary portion of said video signal for processing by employing the different thresholds from said generating means; and processing means for providing binary encoded signals for the video signals entered from said entering means employing the plural thresholds from said generating means, wherein at least one of the plural thresholds is used for a halftone reproduction.
Claim 51
Dependent Claim
33 words
A video signal processing apparatus according to claim 42 wherein said processing means includes means for comparing the video signal entered from said entering means and the threshold generated from said generating means.
Claim 52
Dependent Claim
23 words
A video signal processing apparatus according to claim 42 further comprising means for selecting the threshold to be generated from said generating means.
Claim 53
Dependent Claim
31 words
A video signal processing apparatus according to claim 42 further comprising means for storing the threshold for halftone reproduction, wherein said generating means reads out said threshold from said storing means.
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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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |