US5216518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image processing method and apparatus for encoding variable-length data
Assignee: Canon Inc
•
Filing: 1991-08-30
•
Granted: 1993-06-01
•
Expires: 2011-08-30
Abstract
Abstract An image processing apparatus comprising: a first coding device for coding input image data into code data having a variable length; a second coding device for coding code data having the variable length and coded by the first coding device into code data having a fixed length; and a memory for storing code data coded by the first coding device.
Inventors
- 👤 Taku Yamagami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/21; H04N1/2104; H04N1/2112; H04N1/215; H04N19/00; H04N19/10; H04N19/102; H04N19/115; H04N19/124; H04N19/134; H04N19/146; H04N19/15; H04N19/162; H04N19/169; H04N19/17; H04N19/172; H04N19/189; H04N19/192; H04N19/60; H04N19/13; H04N19/152; H04N19/90; H04N19/91
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
58 words
An image processing apparatus comprising: first coding means for coding input image data into code data having a variable length; second coding means for coding code data having the variable length and coded by said first coding means into code data having a fixed length; and memory means for storing code data coded by said first coding means.
Claim 2
Dependent Claim
58 words
An image processing apparatus comprising: first coding means for coding input image data into code data having a variable length; second coding means for coding code data having the variable length and coded by said first coding means into code data having a fixed length; and memory means for storing code data coded by said first coding means.
Claim 3
Dependent Claim
27 words
An image processing apparatus according to claim 1 further comprising decoding means for decoding code data having the variable length and coded by said first coding means.
Claim 4
Dependent Claim
26 words
An image processing apparatus according to claim 1, wherein each of said first coding means and said second coding means performs coding by using orthogonal conversion.
Claim 5
Dependent Claim
27 words
An image processing apparatus according to claim 1, wherein each of said first coding means and said second coding means have quantization means for quantizing input data.
Claim 6
Dependent Claim
31 words
An image processing apparatus according to claim 4, wherein a quantization parameter of said first coding means and a quantization parameter of said second coding means are different from each other.
Claim 7
Dependent Claim
23 words
An image processing apparatus according to claim 4, wherein a quantization parameter of said first coding means is fixed to a predetermined value.
Claim 8
Dependent Claim
16 words
An image processing apparatus according to claim 1, wherein said apparatus is an electronic still camera.
Claim 9
Dependent Claim
27 words
An image processing apparatus according to claim 7, wherein each of said first coding means and said second coding means are operated in a continuous photographing mode.
Claim 10
Dependent Claim
88 words
An electronic still camera comprising: first coding means for coding input image data into code data having a variable length; second coding means for coding input data into code data having a fixed length; selecting means for selecting said first coding means or said second coding means; and mode setting means for setting either a single photographing mode or a continuous photographing mode, wherein said selecting means selects said first coding means or said second coding means in accordance with a setting made by said mode setting means.
Claim 11
Dependent Claim
88 words
An electronic still camera comprising: first coding means for coding input image data into code data having a variable length; second coding means for coding input data into code data having a fixed length; selecting means for selecting said first coding means or said second coding means; and mode setting means for setting either a single photographing mode or a continuous photographing mode, wherein said selecting means selects said first coding means or said second coding means in accordance with a setting made by said mode setting means.
Claim 12
Dependent Claim
57 words
An image processing method comprising the steps of: coding image data of a first frame into first code data having a variable length; coding image data of a second fame into second code data having a variable length; and coding the first code data and the second code data into third code data having a fixed length.
Claim 13
Dependent Claim
57 words
An image processing method comprising the steps of: coding image data of a first frame into first code data having a variable length; coding image data of a second fame into second code data having a variable length; and coding the first code data and the second code data into third code data having a fixed length.
Claim 14
Dependent Claim
43 words
An image processing method according to claim 10, wherein the third code data is generated in such a manner that the sum of the amount of the first code data and of the amount of the second code data equals a predetermined amount.
Claim 15
Dependent Claim
73 words
An image processing method according to claim 10, wherein the ratio of the amount of a first portion of the third code data, which represents image data of the first frame, and the amount of a second portion of the third code data, which represents image data of the second frame, is the same as the ratio of the amount of the first code data and the amount of the second code data.
Claim 16
Dependent Claim
82 words
An image processing apparatus comprising: first coding means for coding input image data into code data having a variable length; counting means for counting the amount of code data coded by said first coding means; and second coding means for decoding the code data coded by said first coding means having a variable length and for decoding the variable length code data into code data having a fixed length when a count value made by the counting means reaches a predetermined value.
Claim 17
Dependent Claim
82 words
An image processing apparatus comprising: first coding means for coding input image data into code data having a variable length; counting means for counting the amount of code data coded by said first coding means; and second coding means for decoding the code data coded by said first coding means having a variable length and for decoding the variable length code data into code data having a fixed length when a count value made by the counting means reaches a predetermined value.
Claim 18
Dependent Claim
26 words
An image processing apparatus according to claim 13, wherein each of said first coding means and said second coding means performs coding by using orthogonal conversion.
Claim 19
Dependent Claim
27 words
An image processing apparatus according to claim 13, wherein each of said first coding means and said second coding means have quantization means for quantizing input data.
Claim 20
Dependent Claim
31 words
An image processing apparatus according to claim 15, wherein a quantization parameter of said first coding means and a quantization parameter of said second coding means are different from each other.
Claim 21
Dependent Claim
23 words
An image processing apparatus according to claim 15, wherein a quantization parameter of said first coding means is fixed to a predetermined value.
Claim 22
Dependent Claim
16 words
An image processing apparatus according to claim 13, wherein said apparatus is an electronic still camera.
Claim 23
Dependent Claim
27 words
An image processing apparatus according to claim 18, wherein each of said first coding means and said second coding means are operated in a continuous photographing mode.
Claim 24
Dependent Claim
74 words
A still image recording apparatus comprising: mode setting means for setting either a single recording mode or a continuous recording mode; first coding means for coding input data into code data having a fixed length when the single recording mode is set by said mode setting means; and second coding means for coding input data into code data having a variable length when the continuous recording mode is set by said mode setting means.
Claim 25
Dependent Claim
74 words
A still image recording apparatus comprising: mode setting means for setting either a single recording mode or a continuous recording mode; first coding means for coding input data into code data having a fixed length when the single recording mode is set by said mode setting means; and second coding means for coding input data into code data having a variable length when the continuous recording mode is set by said mode setting means.
Claim 26
Dependent Claim
41 words
A still image recording apparatus according to claim 20, further comprising third coding means for decoding code data coded by said second coding means having a variable length and for coding the decoded data into code data having a fixed length.
Claim 27
Dependent Claim
27 words
A still image recording apparatus according to claim 20, wherein each of said first coding means and said second coding means performs coding by using orthogonal conversion.
Claim 28
Dependent Claim
28 words
A still image recording apparatus according to claim 20, wherein each of said first coding means and said second coding means have quantization means for quantizing input data.
Claim 29
Dependent Claim
32 words
A still image recording apparatus according to claim 23, wherein a quantization parameter of said first coding means and a quantization parameter of said second coding means are different from each other.
Claim 30
Dependent Claim
24 words
A still image recording apparatus according to claim 23, wherein the quantization parameter of said first coding means is fixed to a predetermined value.
References Cited (Backward Citations)
US4827339A
Cited
US4858028A
Cited
US4802005A
Cited
US4807028A
Cited
JPS63205644A
Cited
US4774587A
Cited
JPS6481583A
Cited
US4823201A
Cited
EP0323194A2
Cited
US4858017A
Cited
JPH01221989A
Cited
US5032927A
Cited
EP0336317A2
Cited
DE3933155A1
Cited
JPH02113684A
Cited
JPH02156789A
Cited
US4982282A
Cited
EP0380081A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-31 | 1996-11-30 | 1997-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-31 | 2000-11-30 | 2001-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-31 | 2004-11-30 | 2005-06-01 | $7700.00 | Window Closed / Lapsed |