Patent EP0735774A2 successfully refreshed from Google Patents.
EP0735774A2
Expired / Lapsed
EP
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Transmission method and system for JPEG-coded images
Assignee: AT&T Inc
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Filing: 1996-03-26
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Granted: —
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Expires: 2016-03-26
Abstract
Abstract The present invention is an improved transmission system for JPEG images. The present invention may include a separator for separating the JPEG image into Type-I and Type-II information and a transmitter for transmitting the Type-I and Type-II information over a wire or wireless communication medium to a receiver with unequal error protection, wherein the more error sensitive Type-I information is provided with more powerful error protection than the less sensitive Type-II information which makes up the bulk of the JPEG image. The present invention may further include a combiner for combining the Type-I and Type-II information received by the receiver in a JPEG format suitable for the data sink.
Inventors
- 👤 Vijitha Weerackody
- 👤 Yong Zhou
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:49
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/40; H04N21/43; H04N21/438; H04N21/4382; H04L; H04L1/00; H04L1/004; H04L1/0045; H04L1/0054; H04L1/0056; H04L1/0064; H04L1/0065; H04L1/0071; H04L1/0078; H04L1/0086; H04L1/08; H04L1/12; H04L1/16; H04L1/18; H04L1/1812; H04L1/1816; H04N19/00; H04N19/10; H04N19/102; H04N19/124; H04N19/126; H04N19/85; H04N19/89; H04N21/20; H04N21/23; H04N21/236; H04N21/238; H04N21/2383; H04N21/434; H04L1/1803; H04L1/1806; H04L1/1809; H04L2001/0098; H04N19/30; H04N19/60
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
48 words
An apparatus for transmitting a JPEG image over a communication medium to a receiver, comprising: a separator for separating the JPEG image into Type-I and Type-II information; and a transmitter for transmitting the Type-I information over the communication medium with more powerful error protection than the Type-II information.
Claim 2
Independent Claim
43 words
An apparatus for receiving Type-I and Type-II information of a JPEG image transmitted over a communication medium with unequal error protection, comprising: a receiver adapted for processing the Type-I and Type-II information; and a combiner for combining the processed Type-I and Type-II information.
Claim 3
Independent Claim
48 words
An apparatus for transmitting a JPEG image over a communication medium to a receiver, comprising: a separator for separating the JPEG image into Type-IA and Type-IB information; and a transmitter for transmitting the Type-IA information over the communication medium with more powerful error protection than the Type-IB information.
Claim 4
Independent Claim
43 words
An apparatus for receiving Type-IA and Type-IB information of a JPEG image transmitted over a communication medium with unequal error protection, comprising: a receiver adapted for processing the Type-Ia and Type-IB information; and a combiner for combining the processed Type-IA and Type-IB information.
Claim 5
Dependent Claim
98 words
A transmitter for transmitting a JPEG image over a communication medium to a receiver with unequal error protection, comprising: an error detection encoder for encoding Type-I information of the JPEG image with an error detection code; a modulator for modulating the error detection encoded Type-I information and for modulating Type-II information of the JPEG image for transmission over a forward channel of the communication medium to the receiver; and a repeat controller for re-transmitting the error detection encoded Type-I information in response to a retransmission request from the receiver transmitted over a feedback channel of the communication medium.
Claim 6
Dependent Claim
19 words
The transmitter of claim 5, further comprising a separator for separating the JPEG image into Type-I and Type-II information.
Claim 7
Dependent Claim
21 words
The transmitter of claim 5, further comprising an error correction encoder for encoding the Type-II information with an error correction code.
Claim 8
Dependent Claim
21 words
The transmitter of claim 5, further comprising an error correction encoder for encoding the Type-I information with an error correction code.
Claim 9
Dependent Claim
62 words
A transmitter for transmitting a JPEG image over a communication medium to a receiver with unequal error protection, comprising: an error correction encoder for encoding the Type-I information with an error correction code; and a modulator for modulating the error correction encoded Type-I information and for modulating Type-II information of the JPEG image for transmission over the communication medium to the receiver.
Claim 10
Dependent Claim
19 words
The transmitter of claim 9, further comprising a separator for separating the JPEG image into Type-I and Type-II information.
Claim 11
Dependent Claim
23 words
The transmitter of claim 9, further comprising an error correction encoder for encoding the Type-II information with a less powerful error correction code.
Claim 12
Dependent Claim
91 words
A receiver adapted for processing modulated, error detection encoded Type-I information and modulated Type-II information of a JPEG image transmitted over a forward channel of a communication medium with unequal error protection, comprising: a demodulator for demodulating the Type-I and Type-II information; an error detection decoder for decoding the demodulated Type-I information to determine if there are any errors in the Type-I information; and a repeat generator for sending a retransmission request to the transmitter over a feedback channel of the communication medium if errors are detected in the Type-I information.
Claim 13
Dependent Claim
16 words
The receiver of claim 12, further comprising a combiner for combining the Type-I and Type-II information.
Claim 14
Dependent Claim
28 words
The receiver of claim 12, wherein the modulated Type-II information is encoded with an error correction code, further comprising an error correction decoder for decoding the Type-II information.
Claim 15
Dependent Claim
29 words
The receiver of claim 12, wherein the Type-I information is further encoded with an error correction code, further comprising an error correction decoder for decoding the encoded Type-I information.
Claim 16
Dependent Claim
36 words
The receiver of claim 12, further comprising a processor for detecting hexadecimal ff bytes in the demodulated Type-II information and for replacing at least one f of each detected ff byte with a random bit pattern.
Claim 17
Dependent Claim
49 words
A receiver adapted for processing modulated, error correction encoded Type-I information and modulated Type-II information of a JPEG image transmitted over a communication medium with unequal error protection, comprising: a demodulator for demodulating the Type-I and Type-II information; and an error correction decoder for decoding the demodulated Type-I information.
Claim 18
Dependent Claim
17 words
The receiver of claim 17, further comprising a combiner for combining the decoded Type-I and Type-II information.
Claim 19
Dependent Claim
28 words
The receiver of claim 17, wherein the modulated Type-II information is encoded with an error correction code, further comprising an error correction decoder for decoding the Type-II information.
Claim 20
Dependent Claim
36 words
The receiver of claim 17, further comprising a processor for detecting hexadecimal ff bytes in the decoded Type-II information and for replacing at least one f of each detected ff byte with a random bit pattern.
Claim 21
Independent Claim
49 words
A method of transmitting a JPEG image over a communication medium to a receiver with unequal error protection, comprising: separating the JPEG image into Type-I and Type-II information; and transmitting the Type-I information over the communication medium to the receiver with more powerful error protection than the Type-II information.
Claim 22
Independent Claim
46 words
A method of receiving Type-I and Type-II information of a JPEG image transmitted over a communication medium with unequal error protection, comprising: receiving the Type-I and Type-II information from the communication medium; processing the Type-I and Type-II information; and combining the processed Type-I and Type-II information.
Claim 23
Independent Claim
45 words
A method of transmitting a JPEG image over a communication medium to a receiver, comprising: separating the JPEG image into Type-IA and Type-IB information; and transmitting the Type-IA information over the communication medium to the receiver with more powerful error protection than the Type-IB information.
Claim 24
Independent Claim
46 words
A method of receiving Type-IA and Type-IB information of a JPEG image transmitted over a communication medium with unequal error protection, comprising: receiving the Type-IA and Type-IB information from the communication medium; processing the Type-IA and Type-IB information; and combining the processed Type-IA and Type-IB information.
Claim 25
Independent Claim
97 words
A method of transmitting a JPEG image over a communication medium to a receiver with unequal error protection, comprising: encoding Type-I information of the JPEG image with an error detection code; modulating the error detection encoded Type-I information for transmission over a forward channel of the communication medium to the receiver; modulating Type-II information of the JPEG image for transmission over the forward channel of the communication medium to the receiver; and re-transmitting the error detection encoded Type-I information in response to a retransmission request from the receiver transmitted over a feedback channel of the communication medium.
Claim 26
Dependent Claim
19 words
The method of claim 25, further comprising the step of separating the JPEG image into Type-I and Type-II information.
Claim 27
Dependent Claim
19 words
The method of claim 25, further comprising the step of encoding the Type-II information with an error correction code.
Claim 28
Dependent Claim
19 words
The method of claim 25, further comprising the step of encoding the Type-I information with an error correction code.
Claim 29
Independent Claim
64 words
A method of transmitting a JPEG image over a communication medium to a receiver with unequal error protection, comprising: encoding Type-I information of the JPEG image with an error correction code; modulating the error correction encoded Type-I information for transmission over the communication medium to the receiver; and modulating Type-II information of the JPEG image for transmission over the communication medium to the receiver.
Claim 30
Dependent Claim
19 words
The method of claim 29, further comprising the step of separating the JPEG image into Type-I and Type-II information.
Claim 31
Dependent Claim
21 words
The method of claim 29, further comprising the step of encoding the Type-II information with a less powerful error correction code.
Claim 32
Independent Claim
83 words
A method of processing modulated, error detection encoded Type-I information and modulated Type-II information of a JPEG image transmitted over a forward channel of a communication medium with unequal error protection, comprising: demodulating the Type-I and Type-II information; decoding the error detection code of the demodulated Type-I information to determine if there are any errors in the Type-I information; and sending a retransmission request to the transmitter over a feedback channel of the communication medium if errors are detected in the Type-I information.
Claim 33
Dependent Claim
16 words
The method of claim 32, further comprising the step of combining the Type-I and Type-II information.
Claim 34
Dependent Claim
27 words
The method of claim 32, wherein the modulated Type-II information is encoded with an error correction code, further comprising the step of decoding the encoded Type-II information.
Claim 35
Dependent Claim
25 words
The method of claim 32, wherein the Type-I information is encoded with an error correction code, further comprising the step of decoding the Type-I information.
Claim 36
Dependent Claim
35 words
The method of claim 32, further comprising the steps of detecting hexadecimal ff bytes in the demodulated Type-II information and replacing at least one f of each detected ff byte with a random bit pattern.
Claim 37
Independent Claim
36 words
A method of processing modulated, error correction encoded Type-I information and modulated Type-II information transmitted over a communication medium with unequal error protection, comprising: demodulating the Type-I and Type-II information; and decoding the demodulated Type-I information.
Claim 38
Dependent Claim
16 words
The method of claim 37, further comprising the step of combining the Type-I and Type-II information.
Claim 39
Dependent Claim
25 words
The method of claim 37, wherein the Type-II information is encoded with an error correction code, further comprising the step of decoding the Type-II information.
Claim 40
Dependent Claim
34 words
The method of claim 37, further comprising the steps of detecting hexadecimal ff bytes in the Type-II information and replacing at least one f of each detected ff byte with a random bit pattern.
Claim 41
Independent Claim
45 words
An apparatus for detecting the occurrence of Type-I information in Type-II information of a JPEG image, comprising: a processor for detecting hexadecimal ff bytes in the Type-II information and for replacing at least one f of each detected ff byte with a random bit pattern.
Claim 42
Independent Claim
41 words
A method of detecting the occurrence of Type-I information in Type-II information of a JPEG image, comprising: detecting hexadecimal ff bytes in the Type-II information; and replacing at least one f of each detected ff byte with a random bit pattern.
Claim 43
Independent Claim
68 words
An apparatus for storing a JPEG image in or on a storage medium with unequal error protection, comprising: a separator for separating the JPEG image into Type-I and Type-II information; an error correction encoder for encoding the Type-I information with a more powerful error correction code than the Type-II information; and a storage recorder for storing the encoded Type-I and Type-II information in or on the storage medium.
Claim 44
Independent Claim
68 words
An apparatus for storing a JPEG image in or on a storage medium with unequal error protection, comprising: a separator for separating the JPEG image into Type-IA and Type-IB information; an error correction encoder for encoding the Type-IA information with a more powerful error correction code than the Type-IB information; and a storage recorder for storing the encoded Type-IA and Type-IB information in or on the storage medium.
Claim 45
Independent Claim
66 words
An apparatus for reading encoded Type-I and Type-II information of a JPEG image stored in or on a storage medium with unequal error protection, comprising: a storage reader for reading the encoded Type-I and Type-II information stored in or on the storage medium; an error correction decoder for decoding the encoded Type-I and Type-II information; and a combiner for combining the decoded Type-I and Type-II information.
Claim 46
Independent Claim
66 words
An apparatus for reading encoded Type-IA and Type-IB information of a JPEG image stored in or on a storage medium with unequal error protection, comprising: a storage reader for reading the encoded Type-IA and Type-IB information stored in or on the storage medium; an error correction decoder for decoding the encoded Type-IA and Type-IB information; and a combiner for combining the decoded Type-IA and Type-IB information.
References Cited (Backward Citations)
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