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公开(公告)号：JP2003133962A
公开(公告)日：2003-05-09
申请号：JP2002225755
申请日：2002-08-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BERNARDINI RICCARDO , KOVACEVIC JELENA
Abstract: PROBLEM TO BE SOLVED: To provide a method for encoding and decoding information included in images and videos. SOLUTION: A method and apparatus for encoding/decoding multi-dimensional signals are disclosed. An unseparable multi-dimensional filter is used. Analysis filter multi-dimensional signals are encoded by applying a window function and a contraction function to the signals. According to this operation, a prototype is generated. A required number of the prototypes can be duplicated by utilizing a modulation function. The encoded signals are decoded by utilizing a process reverse to the encoding process by a composite filter.
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2.发明专利
公开(公告)号：JP2002198821A
公开(公告)日：2002-07-12
申请号：JP2001325359
申请日：2001-10-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOYAL VIVEK K , KOVACEVIC JELENA , MASSON FRANCOIS
Abstract: PROBLEM TO BE SOLVED: To provide MD coding which can be suitably embodied in such a wireless communication system application as the frequency hopping wireless system. SOLUTION: A multiple-description coder generates many different descriptions in a prescribed portion of signals in a wireless communication system by using multiple description scalar quantization(MDSQ) or another type of multiple description coding. The different descriptions in the prescribed portion of the signals are arranged in a plurality of packets, so that at least the first description in the prescribed portion may be arranged in the first packet and the second description may be arranged in the second packet. Each packet is transmitted by using a frequency hopping modulator and the hopping rate of the modulator is selected or constituted based, at least partially, on the number of descriptions generated with respect to the different portions of the signals.
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Patent Agency Ranking
公开(公告)号：DE60100173D1
公开(公告)日：2003-05-15
申请号：DE60100173
申请日：2001-10-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOYAL VIVEK K , KOVACEVIC JELENA , MASSON FRANCOIS
Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packets such that at least a first description of the given portion is placed in a first packet and a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is selected or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.
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公开(公告)号：CA2359756C
公开(公告)日：2006-04-04
申请号：CA2359756
申请日：2001-10-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MASSON FRANCOIS , GOYAL VIVEK K , KOVACEVIC JELENA
Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packe ts such that at least a first description of the given portion is placed in a first packet a nd a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is select ed or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.
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公开(公告)号：DE60100173T2
公开(公告)日：2003-12-11
申请号：DE60100173
申请日：2001-10-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOYAL VIVEK K , KOVACEVIC JELENA , MASSON FRANCOIS
Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packets such that at least a first description of the given portion is placed in a first packet and a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is selected or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.
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公开(公告)号：CA2359756A1
公开(公告)日：2002-04-27
申请号：CA2359756
申请日：2001-10-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOYAL VIVEK K , MASSON FRANCOIS , KOVACEVIC JELENA
Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packe ts such that at least a first description of the given portion is placed in a first packet a nd a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is select ed or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.
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公开(公告)号：EP0789454A3
公开(公告)日：1998-06-10
申请号：EP97300687
申请日：1997-02-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BERNARDINI RICCARDO , KOVACEVIC JELENA
CPC classification number: H03H17/0266
Abstract: Non-uniform filters are designed with a method which utilizes an orthogonal subbanding technique. A tiling representation of a signal is established. The signal is localized for both time and frequency using a mixed tiling representation of the signal. A prototype is then established using the joint time frequency representation of the signal. Lastly, non-uniform filters are developed utilizing the prototype.
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