US5565992A
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Image transmitting method
Assignee: Canon Inc
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Filing: 1992-10-19
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Granted: 1996-10-15
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Expires: 2012-10-19
Abstract
Abstract There is provided an image transmitting method whereby a variable-length coding is executed to image information and the variable-length coded image information to be compressed is transmitted together with information other than the image information on a data block unit basis of a predetermined data amount, wherein the number of data blocks which mainly include the information other than the image information and don't include the image information to be compressed is made variable for the number of data blocks which mainly include the image information to be compressed. There is also provided an image transmitting method whereby each picture plane is divided into a plurality of regions, a variable-length coding is executed to image information on a region unit basis, and the variable-length coded image information to be compressed is transmitted together with information other than the image information on a data block unit basis of a predetermined data amount, wherein boundary information indicative of the position in the data block of the boundary between the image information to be compressed of each of the divided regions is arranged in a predetermined portion of each of the data blocks, the resultant data blocks are transmitted, specific data which can be distinguished from the boundary information is included in the predetermined portion of each of the data blocks, the information other than the image information is given in place of the image information to the data blocks including the specific data, and the resultant data blocks are transmitted.
Inventors
- 👤 Masahiko Enari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:09
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/85; H04N19/89; H04N19/10; H04N19/102; H04N19/124; H04N19/126; H04N19/13; H04N19/60; H04N19/65; H04N19/90; H04N19/91
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
128 words
An image transmitting method comprising the steps of: dividing image information into blocks; variable-length encoding the image information on a unit basis of one block; forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data amount, said forming step arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block; forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data distinguishable from the boundary information in the predetermined area of the second synchronization blocks and by adding other information in place of image information to the second synchronization blocks including the specific data; and transmitting the resultant synchronization blocks.
Claim 2
Dependent Claim
128 words
An image transmitting method comprising the steps of: dividing image information into blocks; variable-length encoding the image information on a unit basis of one block; forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data amount, said forming step arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block; forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data distinguishable from the boundary information in the predetermined area of the second synchronization blocks and by adding other information in place of image information to the second synchronization blocks including the specific data; and transmitting the resultant synchronization blocks.
Claim 3
Dependent Claim
13 words
A method according to claim 1, wherein the other information is audio information.
Claim 4
Dependent Claim
22 words
A method according to claim 1, wherein said blocks correspond to an image of a plurality of DCT (Discrete Cosine Transform) blocks.
Claim 5
Dependent Claim
133 words
An image transmitting method comprising the steps of: dividing image information into blocks; variable-length encoding the image information on a unit basis of one block; forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data amount, said forming step arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block; forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data distinguishable from the boundary information in the predetermined area of the second synchronization blocks and by adding other information in place of the boundary information to the predetermined area of the second synchronization blocks including the specific data; and transmitting the resultant synchronization blocks.
Claim 6
Dependent Claim
133 words
An image transmitting method comprising the steps of: dividing image information into blocks; variable-length encoding the image information on a unit basis of one block; forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data amount, said forming step arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block; forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data distinguishable from the boundary information in the predetermined area of the second synchronization blocks and by adding other information in place of the boundary information to the predetermined area of the second synchronization blocks including the specific data; and transmitting the resultant synchronization blocks.
Claim 7
Dependent Claim
21 words
A method according to claim 4, wherein the other information is information which is used when the variable-length coding is executed.
Claim 8
Dependent Claim
17 words
A method according to claim 4, wherein the other information is information regarding quantization steps upon quantization.
Claim 9
Dependent Claim
22 words
A method according to claim 4, wherein said blocks correspond to an image of a plurality of DCT (Discrete Cosine Transform) blocks.
Claim 10
Dependent Claim
136 words
An image transmitting apparatus comprising: means for dividing image information into blocks; means for variable-length encoding the image information on a unit basis of one block; means for forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data mount, said forming means arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block, said forming means forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data distinguishable from the boundary information in the predetermined area of the second synchronization blocks and by adding other information in place of image information to the second synchronization blocks including the specific data; and means for transmitting the resultant synchronization blocks.
Claim 11
Dependent Claim
136 words
An image transmitting apparatus comprising: means for dividing image information into blocks; means for variable-length encoding the image information on a unit basis of one block; means for forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data mount, said forming means arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block, said forming means forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data distinguishable from the boundary information in the predetermined area of the second synchronization blocks and by adding other information in place of image information to the second synchronization blocks including the specific data; and means for transmitting the resultant synchronization blocks.
Claim 12
Dependent Claim
13 words
An apparatus according to claim 8, wherein the other information is audio information.
Claim 13
Dependent Claim
22 words
An apparatus according to claim 8, wherein said blocks correspond to an image of a plurality of DCT (Discrete cosine Transform) blocks.
Claim 14
Dependent Claim
143 words
An image transmitting apparatus comprising: means for dividing image information into blocks; means for variable-length encoding the image information on a unit basis of one block; means for forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data amount, said forming means arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block, said forming means forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data which can be distinguished from the boundary information in the second predetermined area of the synchronization blocks and by adding other information in place of the boundary information to predetermined area of the second synchronization blocks including the specific data; and means for transmitting the resultant synchronization blocks.
Claim 15
Dependent Claim
143 words
An image transmitting apparatus comprising: means for dividing image information into blocks; means for variable-length encoding the image information on a unit basis of one block; means for forming first synchronization blocks from data encoded by said encoding step in a unit of a predetermined data amount, said forming means arranging boundary information indicating a position of a boundary between the image information of each block in a predetermined area of each first synchronization block, said forming means forming second synchronization blocks in a same format as the first synchronization blocks by providing specific data which can be distinguished from the boundary information in the second predetermined area of the synchronization blocks and by adding other information in place of the boundary information to predetermined area of the second synchronization blocks including the specific data; and means for transmitting the resultant synchronization blocks.
Claim 16
Dependent Claim
21 words
An apparatus according to claim 11, wherein the other information is information which is used when the variable-length coding is executed.
Claim 17
Dependent Claim
17 words
An apparatus according to claim 11, wherein the other information is information regarding quantization steps upon quantization.
Claim 18
Dependent Claim
22 words
An apparatus according to claim 11, wherein said blocks correspond to an image of a plurality of DCT (Discrete cosine Transform) blocks.
Claim 19
Dependent Claim
168 words
An image processing method comprising the steps of: dividing input image information into blocks; variable-length encoding the blocks divided by said division step on a unit basis of one block; forming first synchronization blocks from data encoded by said encoding step on a unit of a predetermined data amount, said forming step providing in each first synchronization block a predetermined area for adding boundary information indicating a position of a boundary between the image information of each block divided by said division step, said forming step forming second synchronization blocks in a same format as the first synchronization blocks by arranging first other information in the predetermined area instead of the boundary information, and second other information other than the image information being arranged even in an area, in the second synchronization block, in which the image information is to be arranged, when the first other information other than the boundary information is arranged in the predetermined area; and transmitting the synchronization blocks formed by said forming step.
Claim 20
Dependent Claim
168 words
An image processing method comprising the steps of: dividing input image information into blocks; variable-length encoding the blocks divided by said division step on a unit basis of one block; forming first synchronization blocks from data encoded by said encoding step on a unit of a predetermined data amount, said forming step providing in each first synchronization block a predetermined area for adding boundary information indicating a position of a boundary between the image information of each block divided by said division step, said forming step forming second synchronization blocks in a same format as the first synchronization blocks by arranging first other information in the predetermined area instead of the boundary information, and second other information other than the image information being arranged even in an area, in the second synchronization block, in which the image information is to be arranged, when the first other information other than the boundary information is arranged in the predetermined area; and transmitting the synchronization blocks formed by said forming step.
Claim 21
Dependent Claim
176 words
An image processing apparatus comprising: division means for dividing input image information into blocks; encoding means for variable-length encoding the blocks divided by said division means on a unit basis of one block; forming means for forming first synchronization blocks from data encoded by said encoding means on a unit of a predetermined data amount, said forming means providing in each synchronization block a predetermined area for adding boundary information indicating a position of a boundary between the image information of each block divided by said division means, said forming means forming second synchronization blocks in a same format as the first synchronization blocks by arranging first other information in the predetermined area instead of the boundary information, and second other information other than the image information being arranged even in an area, in the second synchronization block, in which the image information is to be arranged, when the first other information other than the boundary information is arranged in the predetermined area; and transmission means for transmitting the synchronization blocks formed by said forming means.
Claim 22
Dependent Claim
176 words
An image processing apparatus comprising: division means for dividing input image information into blocks; encoding means for variable-length encoding the blocks divided by said division means on a unit basis of one block; forming means for forming first synchronization blocks from data encoded by said encoding means on a unit of a predetermined data amount, said forming means providing in each synchronization block a predetermined area for adding boundary information indicating a position of a boundary between the image information of each block divided by said division means, said forming means forming second synchronization blocks in a same format as the first synchronization blocks by arranging first other information in the predetermined area instead of the boundary information, and second other information other than the image information being arranged even in an area, in the second synchronization block, in which the image information is to be arranged, when the first other information other than the boundary information is arranged in the predetermined area; and transmission means for transmitting the synchronization blocks formed by said forming 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) | 1999-10-15 | 2000-04-15 | 2000-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-15 | 2004-04-15 | 2004-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-15 | 2008-04-15 | 2008-10-15 | $7700.00 | Window Closed / Lapsed |