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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 5. Отображено 5.
22-06-2011 дата публикации

Methods and devices for coding and decoding digital audio signals

Номер: CN0102103859A
Автор: JIASONG WU, HUAZHONG SHU, LU WANG, SONGYI LI, LIMIN LUO, WU JIASONG, SHU HUAZHONG, WANG LU, LI SONGYI, LUO LIMIN
Принадлежит:

The invention discloses methods for coding and decoding digital audio signals, belonging to the technical field of digital signal coding. The methods are characterized by decomposing MCLT (modulated complex lapped transform) and IMCLT (inverse modulated complex lapped transform) matrixes with the length of 2M into two MCLT and IMCLT matrixes with the length of M respectively to be rapidly calculated when the digital audio signals are coded or decoded, thus reducing the calculation complexity. Compared with the prior art, the methods have the advantages of low calculation complexity, good real-time performance and easiness in implementation. The invention also discloses devices for coding and decoding digital audio signals. The devices adopt the methods.

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Номер записи: 1
11-04-2012 дата публикации

Methods and devices for coding and decoding digital audio signals

Номер: CN0102103859B
Автор: JIASONG WU, HUAZHONG SHU, LU WANG, SONGYI LI, LIMIN LUO, WU JIASONG, SHU HUAZHONG, WANG LU, LI SONGYI, LUO LIMIN
Принадлежит:

The invention discloses methods for coding and decoding digital audio signals, belonging to the technical field of digital signal coding. The methods are characterized by decomposing MCLT (modulated complex lapped transform) and IMCLT (inverse modulated complex lapped transform) matrixes with the length of 2M into two MCLT and IMCLT matrixes with the length of M respectively to be rapidly calculated when the digital audio signals are coded or decoded, thus reducing the calculation complexity. Compared with the prior art, the methods have the advantages of low calculation complexity, good real-time performance and easiness in implementation. The invention also discloses devices for coding and decoding digital audio signals. The devices adopt the methods.

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Номер записи: 2
24-08-2011 дата публикации

Fast decoding method based on generalized discrete Fourier transform (GDFT)-II

Номер: CN0102163976A
Автор: JIASONG WU, LV WANG, ZHIFANG DONG, BIN WANG, LIMIN LUO, HUAZHONG SHU, WU JIASONG, WANG LV, DONG ZHIFANG, WANG BIN, LUO LIMIN, SHU HUAZHONG
Принадлежит:

The invention discloses a fast decoding method based on generalized discrete Fourier transform (GDFT)-II, and belongs to the technical field of digital signal processing. In the method, GDFT-II domain coefficients {Ai} and {Bi} of signal sequences {am} and {bm} with the length of N/2 are transformed into the GDFT-II domain coefficient {Xk} of an original coded signal sequence {xn} with the lengthof N, wherein m may be 0, 1, ..., N/2-1; i may be 0, 1, ..., N/2-1; n may be 0, 1, ..., N-1; and the calculation of the {Xk} can be realized by the calculation of an even output index {X2i} and the calculation of an odd output index {X2i+1}, thereby reducing the times of GDFT-II and reducing the calculation complexity of a decoding process. Compared with the prior art, the invention has relatively lower complexity, higher decoding real-time performance and less signal distortion.

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Номер записи: 3
04-07-2012 дата публикации

Anti-falling hanging device

Номер: CN0101705800B
Автор: SUN JIHONG, YU XUEXIN, YUAN CHANGZHONG, XU HAILING, YAO YAN, JIN BAOJUN, WU JIASONG, LI CHEN, LI YUANCHUANG, AO LIMIN, JIHONG SUN, XUEXIN YU, CHANGZHONG YUAN, HAILING XU, YAN YAO, BAOJUN JIN, JIASONG WU, CHEN LI, YUANCHUANG LI, LIMIN AO
Принадлежит:

The invention relates to an anti-falling hanging device. The internal thread of an outer hanging joint is connected with the external thread at the upper part of a cylinder body; an extension tube penetrates through the outer hanging joint and is provided with an inner hanging joint at the lower part; the inner hanging joint is arranged in the cylinder body; the outer handing joint is provided with an inner end surface, and the internal thread on the outer hanging joint is a left-screwing thread; the external thread at the upper part of the cylinder body is a left-screwing thread; the outer hanging joint is provided with a right-screwing external thread; the cylinder body is provided with a right-screwing thread; the internal thread of an inner anti-falling sleeve is connected with the right-screwing external on the cylinder body; the lower end surface of the outer hanging joint supports against the upper end surface of the inner anti-falling sleeve; the lower circular bead of an outer ...

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Номер записи: 4
27-04-2011 дата публикации

Image and digital video coding and decoding methods

Номер: CN0102036075A
Автор: Wu Jiasong, Wang Lv, Li Songyi, Luo Limin, Shu Huazhong
Принадлежит:

The invention discloses image and digital video coding and decoding methods, and belongs to the technical field of digital image processing. In the coding and decoding methods, when two-dimensional forward/inverse discrete orthogonal transformation is carried out, two-dimensional integer forward/inverse discrete Tchebichef transformation is adopted. In the invention, the two-dimensional integer forward/inverse discrete Tchebichef transformation is used in place of other integer transformation method used in the prior art, so that the method can effectively solve the mismatch problem of a decoder, realizes lossless coding, and has high compression property and high expandability. The invention further provides a fast algorithm of 8*8 integer discrete Tchebichef transformation matrix; and the algorithm only needs shifting and addition operation, so that the consumption of hardware resource is reduced, and hardware realization is facilitated.

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Номер записи: 5