US4796092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image processing with compression encoding
Assignee: Canon Inc
•
Filing: 1985-03-27
•
Granted: 1989-01-03
•
Expires: 2005-03-27
Abstract
Abstract An image processing method comprising the step of converting a read image signal into an intermediate code which is then stored in an image memory. The method further includes the steps of reading out the stored intermediate code and converting the pixel density of the read-out intermediate code. Then, the intermediate code, the pixel density of which has been converted, is converted into a final code.
Inventors
- 👤 Yukihiko Ogata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:09
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/41; H04N1/411; H04N1/413; H04N1/417
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
An image processing method comprising the steps of: obtaining an original image signal; performing a compression encoding of the original image signal according to a run length of the original image signal to obtain a first code signal; storing the first code signal in an image memory; converting a run length of the first code signal read out of the image memory; performing a compression encoding according to the run length converted in said converting step to obtain a second code signal; and transmitting the second code signal.
Claim 2
Dependent Claim
88 words
An image processing method comprising the steps of: obtaining an original image signal; performing a compression encoding of the original image signal according to a run length of the original image signal to obtain a first code signal; storing the first code signal in an image memory; converting a run length of the first code signal read out of the image memory; performing a compression encoding according to the run length converted in said converting step to obtain a second code signal; and transmitting the second code signal.
Claim 3
Dependent Claim
30 words
An image processing method according to claim 1, wherein the first code signal includes a one-dimensional compression code signal and the second code signal includes a two-dimensional compression code signal.
Claim 4
Dependent Claim
31 words
An image processing method according to claim 2, wherein the first code signal includes a run length code signal and the second code signal includes a modified READ (MR) code signal.
Claim 5
Dependent Claim
112 words
An image processing method comprising the steps of: obtaining an original image signal; compressing and encoding the original image signal to obtain a first code signal representing a run length of the original image signal; storing the first code signal in an image memory; discriminating a recording mode on a reception side, in response to information from the reception side; converting the first code signal read out of the image memory, according to the discriminated recording mode; encoding the converted first code signal into a second code signal having a form which is different from a form of the first code signal; and transmitting the second code signal to the reception side.
Claim 6
Dependent Claim
112 words
An image processing method comprising the steps of: obtaining an original image signal; compressing and encoding the original image signal to obtain a first code signal representing a run length of the original image signal; storing the first code signal in an image memory; discriminating a recording mode on a reception side, in response to information from the reception side; converting the first code signal read out of the image memory, according to the discriminated recording mode; encoding the converted first code signal into a second code signal having a form which is different from a form of the first code signal; and transmitting the second code signal to the reception side.
Claim 7
Dependent Claim
24 words
An image processing method according to claim 4, wherein in said converting step the run length is converted in accordance with the recording mode.
Claim 8
Dependent Claim
30 words
An image processing method according to claim 4, wherein the first code signal includes a one-dimensional compression code signal and the second code signal includes a two-dimensional compression code signal.
Claim 9
Dependent Claim
31 words
An image processing method according to claim 6, wherein the first code signal includes a run length code signal and the second code signal includes a modified READ (MR) code signal.
Claim 10
Dependent Claim
23 words
An image processing method according to claim 4, wherein the operation in said converting step is inhibited in accordance with the recording mode.
Claim 11
Dependent Claim
19 words
An image processing method according to claim 4, wherein the recording mode includesa mode referring to a recording resolution.
Claim 12
Dependent Claim
122 words
An image processing method in which original image data is stored in an image memory and then the stored image data in the image memory is read out to be transmitted, said method comprising the steps of: obtaining the original image data; compression encoding the original image data into first code data capable of converting a resolution of the image data; storing the first code data into the image memory; converting the first code data read out of the image memory into a predetermined-ratio run length without restoring so as to convert the resolution of the image data; and further compression encoding the first code data conerted in said resolution converting step, into second code data, to transmit the second code data.
Claim 13
Dependent Claim
122 words
An image processing method in which original image data is stored in an image memory and then the stored image data in the image memory is read out to be transmitted, said method comprising the steps of: obtaining the original image data; compression encoding the original image data into first code data capable of converting a resolution of the image data; storing the first code data into the image memory; converting the first code data read out of the image memory into a predetermined-ratio run length without restoring so as to convert the resolution of the image data; and further compression encoding the first code data conerted in said resolution converting step, into second code data, to transmit the second code data.
Claim 14
Dependent Claim
22 words
An image processing method according to claim 25, wherein said resolution converting step converts a run length of the first code data.
Claim 15
Dependent Claim
23 words
An image processing method according to claim 11, wherein said converting step is executed in accordance with a recording mode of the receiver.
Claim 16
Dependent Claim
21 words
An image processing method according to claim 12, whererein said resolution converting step thins line data of the first code data.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |