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公开(公告)号：US6111872A
公开(公告)日：2000-08-29
申请号：US608548
申请日：1996-02-28
CPC分类号： H04Q9/04
摘要： A master station performing continuous operations is communicatively coupled with a plurality of remote stations performing intermittent transmission/receiving operations in constant cycles. Control units of the remote stations control radio communication devices to transmit synchronizing signals to the master station in constant cycles respectively. When the synchronizing signals are received from the remote stations, a control unit of the master station acquires information of corresponding intermittent receiving timing from a memory device, and controls a radio communication device to perform transmitting operations to the remote stations in coincidence with the intermittent receiving timing. Further, the control unit of the master station reads random number values from a random number generator in re-transmission of data, and shifts data transmission timing from original timing by time corresponding to the random number values. On the other hand, the control units of the remote stations read random number values from random number generators in re-receiving of the data, and shift data receiving timing from original timing by time corresponding to the random number values. Thus, the data collision probability is reduced.
摘要翻译： 执行连续操作的主站与以多个周期执行间歇发送/接收操作的多个远程站通信耦合。 远程站的控制单元控制无线电通信设备，以恒定周期将同步信号发送到主站。 当从远程站接收到同步信号时，主站的控制单元从存储装置获取对应的间歇接收定时的信息，并且控制无线电通信装置与间歇接收一致地向远程站发送操作 定时。 此外，主站的控制单元在重新发送数据时从随机数发生器读取随机数值，并且从与原始定时相对应的随机数值的时间移位数据发送定时。 另一方面，远程站的控制单元在重新接收数据时从随机数发生器读取随机数值，并且从与原始定时相对应的随机数值的时间移位数据接收定时。 因此，数据冲突概率降低。
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公开(公告)号：US5761223A
公开(公告)日：1998-06-02
申请号：US504740
申请日：1995-07-20
CPC分类号： H04L1/007 , H03M13/35 , H04L1/0009 , H04L1/0057
摘要： A device consists of: a first unit which divides voice and image data into blocks each consisting of a predetermined number of data, and executes a method of selecting one of plural error correction encoding systems and conducting encoding on an arbitrary number of data in one block; a second unit which executes a method of measuring an error state of a communication channel; and a third unit which executes a method of determining data which are to be subjected to encoding conducted in the first unit, and an error correction encoding system. When the state of the communication channel is inferior, only data of high importance can be protected. When the state is superior, a wide range of data including those of low importance can be protected.
摘要翻译： 一种装置包括：将语音和图像数据划分成由预定数量的数据组成的块的第一单元，并且执行选择多个纠错编码系统之一并对一个块中的任意数量的数据进行编码的方法 ; 执行测量通信信道的错误状态的方法的第二单元; 以及执行确定要在第一单元中进行的编码的数据的方法的第三单元和纠错编码系统。 当通信信道的状态较差时，只能保护高重要性的数据。 当状态优越时，可以保护包括低重要性在内的各种数据。
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3.发明授权Transmitting device, receiving device, system, and method for transmitting image at high efficiency 失效传输设备，接收设备，系统和高效传输图像的方法
公开(公告)号：US5550756A
公开(公告)日：1996-08-27
申请号：US286130
申请日：1994-08-04
IPC分类号： H03M7/36 , H04B14/06 , H04L1/00 , H04N7/24 , H04N7/66 , H04N19/00 , H04N19/102 , H04N19/164 , H04N19/166 , H04N19/423 , H04N19/46 , H04N19/503 , H04N19/587 , H04N19/65 , H04N19/67 , H04N19/70 , H04N19/89 , G06F17/00
CPC分类号： H04N21/2383 , H04N19/61 , H04N21/4382
摘要： A transmitting device encodes an animated image by detecting a difference between one image frame and a reference image frame, then transmits the encoded image to a receiving device by a radio line at high efficiency. The transmitting device comprises an image storing unit for storing the reference image frame, an initialization unit for initializing the image storing unit, a difference encoding unit for detecting and encoding the difference, an encoded data storing unit for storing the encoded difference, a transmitting unit for detecting an error detection code in the encoded difference, and transmitting the encoded difference together with transmission information including the error detection code to the receiving device, a receiving unit for receiving reception information from the receiving device which indicates whether the receiving device finds either OK or NG as a result of error detection check which is based on the error detection code, a reproducing unit for reproducing the encoded difference and storing it as one reference frame into the image unit when the reception information indicates OK, and a controlling unit for controlling the difference encoding unit to encode the next image frame when the reception information indicates NG, while controlling the difference encoding unit to encode the next image frame only after the reproducing unit stores a new reference image frame when the received reception information indicates OK.
摘要翻译： 发送设备通过检测一个图像帧和参考图像帧之间的差异来对动画图像进行编码，然后通过无线电线路以高效率将编码图像发送到接收装置。 发送装置包括用于存储参考图像帧的图像存储单元，用于初始化图像存储单元的初始化单元，用于检测和编码差异的差分编码单元，用于存储编码差异的编码数据存储单元，发送单元 用于检测所述编码差分中的错误检测码，并将所述编码差与包含所述错误检测码的发送信息一起传送到所述接收装置;接收单元，用于从所述接收装置接收指示接收装置是否发现OK的接收信息 或NG，作为基于错误检测码的错误检测检查的结果;再现单元，用于在接收信息指示OK时再现编码的差异并将其作为一个参考帧存储到图像单元中;以及控制单元，用于控制 差分编码单元对下一图像f进行编码 当接收信息指示NG时，当控制差编码单元仅在接收的接收信息指示OK之后，在再现单元存储新的参考图像帧之后对下一个图像帧进行编码。
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公开(公告)号：US20080069184A1
公开(公告)日：2008-03-20
申请号：US11976838
申请日：2007-10-29
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
IPC分类号： H04B1/707
摘要： A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes and inverse spreading codes. A transmitting apparatus and a receiving apparatus store the spreading codes and the inverse spreading codes generated by the spreading code generating apparatus, respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
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公开(公告)号：US08325780B2
公开(公告)日：2012-12-04
申请号：US11976838
申请日：2007-10-29
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
IPC分类号： H04B1/00
摘要： A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes and inverse spreading codes. A transmitting apparatus and a receiving apparatus store the spreading codes and the inverse spreading codes generated by the spreading code generating apparatus, respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication.
摘要翻译： 扩展码产生装置执行生成的正交码的M序列乘法和零值相加以获得信道识别码，然后执行信道识别码的傅立叶逆变换，以产生扩展码和反扩频码。 发送装置和接收装置分别存储由扩展码产生装置产生的扩展码和反向扩展码，并使用分别从存储码中选择的单个码进行扩频通信。
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公开(公告)号：US07330496B2
公开(公告)日：2008-02-12
申请号：US10491925
申请日：2002-10-16
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
IPC分类号： H04B1/00
摘要： A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes and inverse spreading codes. A transmitting apparatus and a receiving apparatus store the spreading codes and the inverse spreading codes generated by the spreading code generating apparatus, respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
摘要翻译： 扩展码产生装置执行生成的正交码的M序列乘法和零值相加以获得信道识别码，然后执行信道识别码的傅立叶逆变换，以产生扩展码和反扩频码。 发送装置和接收装置分别存储由扩展码产生装置产生的扩展码和反向扩展码，并使用分别从存储码中选择的单个码进行扩频通信。 通过使用扩展码进行扩展，输入信号在频率轴上具有均匀功率的宽频带上扩展。 因此，传输特性得到改善，并且复用容量增加。
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公开(公告)号：US07085233B2
公开(公告)日：2006-08-01
申请号：US09972962
申请日：2001-10-10
IPC分类号： H04L12/56
CPC分类号： H04L1/1887 , H04L1/0003 , H04L2001/0093 , H04L2001/0095 , H04W74/02
摘要： In serial transmission of a mixture of isochronous data and anisochronous data, communications through a transmission path with a high ratio of occurrence of transmission errors may disturb images during streaming reproduction and produce noise in sound. To solve this problem, the isochronous data that has not been successfully received is retransmitted by using an anisochronous region. Thus, a transmission error of the isochronous data can be reduced without impairment of isochronous characteristics of the data.
摘要翻译： 在串行传输同步数据和不同步数据的混合的情况下，通过具有高传输错误发生率的传输路径的通信可能在流再现期间干扰图像并产生噪声。 为了解决这个问题，通过使用不同步区域来重发未成功接收的同步数据。 因此，可以减少同步数据的传输错误而不损害数据的等时特性。
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公开(公告)号：US20050018753A1
公开(公告)日：2005-01-27
申请号：US10491925
申请日：2002-10-16
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
摘要： A spreading code generating apparatus (10) carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes (121) and inverse spreading codes (131). A transmitting apparatus (20) and a receiving apparatus (30) store the spreading codes (121) and the inverse spreading codes (131) generated by the spreading code generating apparatus (10), respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
摘要翻译： 扩展码产生装置（10）执行生成的正交码的M序列乘法和零值相加以获得信道识别码，然后执行信道识别码的傅里叶逆变换，以产生扩展码（121）和反扩频 代码（131）。 发送装置（20）和接收装置（30）分别存储由扩展码生成装置（10）生成的扩展码（121）和逆扩展码（131），并使用分别从 存储码进行扩频通信。 通过使用扩展码进行扩展，输入信号在频率轴上具有均匀功率的宽频带上扩展。 因此，传输特性得到改善，并且复用容量增加。
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公开(公告)号：US20120099559A1
公开(公告)日：2012-04-26
申请号：US13337680
申请日：2011-12-27
IPC分类号： H04W72/08
摘要： A communication band is divided into: a beacon period in which every master station transmits a beacon packet in competition with one another; a guaranteed-band period (e.g., a TDMA period or an FDMA period) in which only a specific permitted station is allowed access; and a CSMA period in which every station is allowed access in competition with one another. Plural master stations exchange information of a communication band used in the guaranteed-band period with each other, and based on the respective information, a communication band available to the master station's own communications system in the guaranteed-band period is calculated.
摘要翻译： 通信频带被分为：每个主站彼此竞争地发送信标分组的信标周期; 仅允许访问特定允许站的保证带周期（例如，TDMA周期或FDMA周期）; 以及每个车站相互竞争的CSMA时段。 多个主站将保证带期间中使用的通信频带的信息彼此交换，并且基于相应的信息，计算在保证频带周期内对主站自己的通信系统可用的通信频带。
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公开(公告)号：US08107431B2
公开(公告)日：2012-01-31
申请号：US12007782
申请日：2008-01-15
IPC分类号： H04W4/00
摘要： A communication band is divided into: a beacon period in which every master station transmits a beacon packet in competition with one another; a guaranteed-band period (e.g., a TDMA period or an FDMA period) in which only a specific permitted station is allowed access; and a CSMA period in which every station is allowed access in competition with one another. Plural master stations exchange information of a communication band used in the guaranteed-band period with each other, and based on the respective information, a communication band available to the master station's own communications system in the guaranteed-band period is calculated.
摘要翻译： 通信频带被分为：每个主站彼此竞争地发送信标分组的信标周期; 仅允许访问特定允许站的保证带周期（例如，TDMA周期或FDMA周期）; 以及每个车站相互竞争的CSMA时段。 多个主站将保证带期间中使用的通信频带的信息彼此交换，并且基于相应的信息，计算在保证频带周期内对主站自己的通信系统可用的通信频带。
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