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    Inverse discrete-cosine transform apparatus
    1.
    发明授权
    Inverse discrete-cosine transform apparatus 失效
    逆离散余弦变换装置

    公开(公告)号：US06735609B2

    公开(公告)日：2004-05-11

    申请号：US09794296

    申请日：2001-02-27

    申请人： Rajesh Kumar Dixit ,  Takao Terao ,  Hiroshi Sugawara ,  Masami Goseki ,  Kazushi Sato

    发明人： Rajesh Kumar Dixit ,  Takao Terao ,  Hiroshi Sugawara ,  Masami Goseki ,  Kazushi Sato

    IPC分类号： G06F1714

    CPC分类号： G06F17/147 ,  G06T9/007

    摘要： An inverse discrete-cosine transform apparatus that is simple in structure and can yet output pixel data items different in resolution. The apparatus comprises eight inverse discrete-cosine transform multipliers 23, ten field, compression, inverse discrete-cosine transform multipliers 22, eight selectors 24, eight selectors 25, eight buffers 26, eight sign multipliers 27, a control section, eight adders 28, and eight buffers 29. The control section controls the selectors 24, selectors 25, buffers 26 and sign multipliers 27 in accordance with whether the input discrete-cosine block has been subjected to field division and where the discrete-cosine coefficients are located in the block. One of the values input to the selectors 24, selectors 25, buffers 26 and sign multipliers 27 is thereby selected. The value selected is output after added with the plus sign or the minus sign. The adders 28 add the values output from the selectors 24, selectors 25, buffers 26 and sign multipliers 27. The buffers 29 store the values output from the adders 28.

    摘要翻译： 一种离散余弦变换装置，结构简单，可以输出分辨率不同的像素数据。 该装置包括八个反离散余弦变换乘法器23，十个场，压缩，反离散余弦变换乘法器22，八个选择器24，八个选择器25，八个缓冲器26，八个符号乘法器27，控制部分，八个加法器28， 和八个缓冲器29.控制部分根据输入的离散余弦块是否已经进行了场分割并且其中离散余弦系数位于块中来控制选择器24，选择器25，缓冲器26和符号乘法器27 。 由此选择输入到选择器24，选择器25，缓冲器26和符号乘法器27的值之一。 选择的值在添加加号或减号后输出。 加法器28添加从选择器24，选择器25，缓冲器26和符号乘法器27输出的值。缓冲器29存储从加法器28输出的值。

    Method for exchanging information between communication devices performing wireless communication
    3.
    发明授权
    Method for exchanging information between communication devices performing wireless communication 有权

    公开(公告)号：US07092670B2

    公开(公告)日：2006-08-15

    申请号：US10056849

    申请日：2002-01-25

    申请人： Makoto Tanaka ,  Toru Akazawa ,  Rajesh Kumar Dixit

    发明人： Makoto Tanaka ,  Toru Akazawa ,  Rajesh Kumar Dixit

    IPC分类号： H04B3/36

    CPC分类号： H04W76/14 ,  H04W92/18

    摘要： When a connection is made between a first communication device and a second communication device at a first connector and a second connector, information is generated and exchanged for the purpose of specifying parties to mutual wireless communication. After this information exchange, information is added by a transceiver to data transmitted and received by wireless communication for the purpose of identifying the party to the communication and, by setting the first communication device and the second communication device so that they respond only to data having that data added thereto, one-to-one communication between the first communication device and the second communication device is achieved. One-to-many communication between a first communication device and many second communication devices is also provided.