CODE DIVISION MULTIPLE ACCESS MOBILE COMMUNICATION SYSTEM
    72.
    发明申请
    CODE DIVISION MULTIPLE ACCESS MOBILE COMMUNICATION SYSTEM 有权
    代码段多路访问移动通信系统

    公开(公告)号:US20100278148A1

    公开(公告)日:2010-11-04

    申请号:US12836237

    申请日:2010-07-14

    IPC分类号: H04W36/00

    摘要: In a mobile communication system using a code division multiple access (CDMA) method, spreading code detection and frame/slot timing synchronization (cell search) is conducted by using a long code masked symbol. The spreading factor of the long code masked symbol is set to a value lower than spreading factors of other ordinary symbols. As a result, it becomes possible to reduce the circuit scale and power dissipation of the mobile terminal and raise the speed of cell search.

    摘要翻译: 在使用码分多址(CDMA)方法的移动通信系统中,通过使用长码屏蔽符号来进行扩展码检测和帧/时隙定时同步(小区搜索)。 长码屏蔽符号的扩展因子被设置为低于其他普通符号的扩展因子的值。 结果,可以降低移动终端的电路规模和功耗,提高小区搜索的速度。

    TRANSMISSION POWER CONTROL METHOD FOR A WIRELESS COMMUNICATION SYSTEM
    73.
    发明申请
    TRANSMISSION POWER CONTROL METHOD FOR A WIRELESS COMMUNICATION SYSTEM 有权
    用于无线通信系统的传输功率控制方法

    公开(公告)号:US20100255872A1

    公开(公告)日:2010-10-07

    申请号:US12820555

    申请日:2010-06-22

    IPC分类号: H04W52/04

    摘要: Transmission power relative to a propagation path having a variation in gain is controlled to increase communication channel capacity, and a data rate is controlled in accordance with the variation of the increased communication channel capacity. In order to increase the communication channel capacity, the transmission power is determined so that the sum of noise power (=received noise power/propagation path gain) converted into one at a transmitter and the transmission power becomes constant. As a result, contrary to the background art, the transmission power is controlled to be reduced when the propagation path gain decreases and to be increased when the propagation path gain increases.

    摘要翻译: 控制相对于具有增益变化的传播路径的传输功率以增加通信信道容量,并且根据增加的通信信道容量的变化来控制数据速率。 为了增加通信信道容量,确定发送功率,使得在发射机处转换为一个的发送功率和发送功率的噪声功率(=接收噪声功率/传播路径增益)之和变得恒定。 结果,与背景技术相反,当传播路径增益减小时,传输功率被控制为减小,并且当传播路径增益增加时传输功率被增加。

    DATA PROCESSING DEVICE AND POWER CONTROL METHOD

    公开(公告)号:US20100115318A1

    公开(公告)日:2010-05-06

    申请号:US12529225

    申请日:2008-02-28

    IPC分类号: G06F1/32 H04N7/26 G06F1/26

    摘要: A data processing device comprising: a receiving unit operable to receive a control signal from a display device externally connected; a signal processing unit for operable to generate video data and/or audio data; a drive unit operable to store the data generated by the signal processing unit to a recording medium; a signal output unit operable to output a video signal and/or audio signal; and a control unit operable to control operation of the signal processing unit, the drive unit, and the signal output unit; the data processing device further comprising: a power control unit operable to control electric power supplied to the signal processing unit, the drive unit, the signal output unit, and the control unit, wherein the power control unit can control supplying of the electric power in three power states including at least a power-off state, a recording standby state, a power-on state, and wherein the power control unit stops the supplying of the electric power to at least the drive unit in the power-off state, supplies the electric power to at least the drive unit and the control unit in the recording standby state, and supplies the electric power to the signal processing unit, the drive unit, the signal output unit, and the control unit in the power-on state, and wherein the signal output unit stops outputting of the video signal and/or audio signal in the power-off state and the recording standby state, and outputs the video signal and/or audio signal in the power-on state, and wherein the power control unit switches the power state from the power-off state to the recording standby state when the receiving unit receives a signal indicating that the display device is turned on, in the power-off state, and wherein the power control unit switches the power state from the recording standby state to the power-on state when the receiving unit receives a signal instructing start of a recording operation or a power state confirmation signal inquiring the power state of the data processing device from the display device, in the recording standby state.

    Image forming apparatus having contactless type temperature sensor
    75.
    发明授权
    Image forming apparatus having contactless type temperature sensor 有权
    具有非接触式温度传感器的图像形成装置

    公开(公告)号:US07680438B2

    公开(公告)日:2010-03-16

    申请号:US12241242

    申请日:2008-09-30

    申请人: Takashi Yano

    发明人: Takashi Yano

    IPC分类号: G03G15/16

    CPC分类号: G03G21/20 G03G2215/20

    摘要: A sealing member which is compressed by a contactless temperature sensor and a cover member of a fixing unit is provided between the sensor and the cover member. An opening portion for temperature detection is shut off from a space around the fixing unit by the sealing member, thereby preventing the air from flowing from the opening portion into the fixing unit.

    摘要翻译: 在传感器和盖构件之间设置由非接触式温度传感器压缩的密封构件和固定单元的盖构件。 用于温度检测的开口部分通过密封构件从固定单元周围的空间切断,从而防止空气从开口部分流入定影单元。

    Error correction decoder
    76.
    发明授权
    Error correction decoder 失效
    纠错解码器

    公开(公告)号:US07636879B2

    公开(公告)日:2009-12-22

    申请号:US11196410

    申请日:2005-08-04

    IPC分类号: H03M13/00

    CPC分类号: H03M13/4169 H03M13/4146

    摘要: An error correction decoder possessing a decoding method with high error correction performance and capable of operating at a low operating frequency and on a reduced circuit scale. A decoding method based on the SOVA method for improving error correction performance and boosting reliability of the soft decision output by allowing branching of paths other than the survival path at trace-back is achieved by preparing a trace-back circuit for each state, and selecting an output from that output and survival state (survival state+difference of likelihood).

    摘要翻译: 一种纠错解码器具有高纠错性能的解码方法,能够以低工作频率和降低的电路规模运行。 通过准备每个状态的追溯回路来实现基于SOVA方法的用于提高纠错性能并提高软决策输出的可靠性的解码方法,该路径允许通过追溯生存路径之外的路径的分支, 该输出和生存状态的输出(生存状态+可能性差异)。

    Adaptive modulation scheme and coding rate control method
    77.
    发明授权
    Adaptive modulation scheme and coding rate control method 失效
    自适应调制方案和编码速率控制方法

    公开(公告)号:US07555269B2

    公开(公告)日:2009-06-30

    申请号:US11333199

    申请日:2006-01-18

    IPC分类号: H04B1/02 H04L27/00

    摘要: A radio communication system for enabling control of a modulation scheme following variation in the propagation channel and control of a coding rate in a small amount of delay and arithmetic operation. In order to attain the object explained above, a transmitter station and a receiver station use in common the information of the maximum number of bits used for communication of each symbol. The transmitter station generates codeword by previously encoding the communication signal with the code having sufficient error correcting capability, assigns, to each symbol, the codeword to result in the maximum number of bits per symbol, and modulates and transmits the bits using the modulation scheme in which the number of bits per symbol is equal to or less than the maximum number of bits per symbol. Meanwhile, the receiver station demodulates, for each symbol, the bits with the modulation scheme, in which the number of bits per symbol is larger as the propagation channel quality is higher, among the modulation schemes in which the number of bits per symbol is less than the maximum number of bits per symbol and summarizes the demodulation results and executes the decoding process by adding the signal of zero likelihood to restore the shortage when the total sum of the number of bits per symbol in the modulation scheme used for the demodulation becomes equal to or larger than the predetermined value.

    摘要翻译: 一种无线电通信系统,用于在传播信道变化之后进行调制方式的控制,并且在少量的延迟和算术运算中控制编码率。 为了实现上述目的,发送站和接收站共同使用用于每个符号通信的最大位数的信息。 发射机站通过预先编码具有足够纠错能力的码的通信信号生成码字,向每个符号分配码字以产生每个码元的最大比特数,并使用调制方案调制和发送比特 每个符号的比特数等于或小于每个符号的最大比特数。 同时,对于每个符号,接收机站在每个符号的比特数较少的调制方案中,针对每个符号解调具有调制方案的比特,其中每个符号的比特数随传播信道质量越高越大 而不是每个符号的最大比特数,并且总结了解调结果,并且当用于解调的调制方案中的每个符号的比特数的总和变得相等时,通过添加零似然度的信号来恢复缺陷来执行解码处理 达到或大于预定值。

    Method of mobile communication and apparatus therefor

    公开(公告)号:US07545789B2

    公开(公告)日:2009-06-09

    申请号:US10834001

    申请日:2004-04-29

    IPC分类号: H04B7/216

    摘要: In order to accomplish efficient communication of data between a base station and a plurality of mobile terminals, particular orthogonal codes are transmitted from the mobile stations to the base station as alert signals indicating the presence of data to be transmitted. The base station checks whether particular orthogonal codes are contained in the alert signals, and when the particular orthogonal codes are detected in the alert signals, information representing the detected orthogonal codes and the schedules for transmitting the data from the mobile terminals to the base station are transmitted from the base station to the mobile terminals as an alert response to the alert signals. When the information representing the orthogonal codes used for the alert signals are contained in the alert response transmitted from the base station to the mobile terminals, the data waiting to be transmitted is transmitted from the mobile terminals to the base station according the data transmission schedules in the alert response.

    Image fixing apparatus and image forming apparatus
    79.
    发明授权
    Image fixing apparatus and image forming apparatus 有权
    图像定影装置和图像形成装置

    公开(公告)号:US07486902B2

    公开(公告)日:2009-02-03

    申请号:US12127941

    申请日:2008-05-28

    IPC分类号: G03G15/20

    摘要: An image fixing apparatus includes a first conveying path on which a sheet is conveyed, a first fixing unit that fixes a toner image on a sheet conveyed on the first conveying path, a second conveying path on which a sheet is conveyed, wherein the second conveying path branches from the first conveying path in a bifurcation provided on a upstream of the first fixing unit and joins into the first conveying path in a confluence provided on a downstream of the first fixing unit, and a second fixing unit provided on a upstream of the bifurcation or on a downstream of the confluence or on the second conveying path. Time to convey a sheet from the bifurcation to the confluence through the first conveying path and time to convey a sheet from the bifurcation to the confluence through the bypass conveying path are nearly equal.

    摘要翻译: 图像定影装置包括:第一输送路径,其上输送有纸张;第一固定单元,其将调色剂图像固定在在第一输送路径上输送的纸张上;第二输送路径,其上输送有纸张,其中第二输送 路径在设置在第一固定单元的上游的分叉处从第一输送路径分支,并且在设置在第一固定单元的下游的汇合处连接到第一输送路径中,并且第二固定单元设置在第一固定单元的上游 分叉或在汇合的下游或第二输送路径上。 通过第一传送路径将片材从分叉传送到汇合点的时间和通过旁路传送路径将片材从分叉传送到汇合点的时间几乎相等。

    IMAGE FORMING APPARATUS HAVING CONTACTLESS TYPE TEMPERATURE SENSOR
    80.
    发明申请
    IMAGE FORMING APPARATUS HAVING CONTACTLESS TYPE TEMPERATURE SENSOR 有权
    具有接触式温度传感器的图像形成装置

    公开(公告)号:US20090028595A1

    公开(公告)日:2009-01-29

    申请号:US12241242

    申请日:2008-09-30

    申请人: Takashi Yano

    发明人: Takashi Yano

    IPC分类号: G03G15/20

    CPC分类号: G03G21/20 G03G2215/20

    摘要: A sealing member which is compressed by a contactless temperature sensor and a cover member of a fixing unit is provided between the sensor and the cover member. An opening portion for temperature detection is shut off from a space around the fixing unit by the sealing member, thereby preventing the air from flowing from the opening portion into the fixing unit.

    摘要翻译: 在传感器和盖构件之间设置由非接触式温度传感器压缩的密封构件和固定单元的盖构件。 用于温度检测的开口部分通过密封构件从固定单元周围的空间切断,从而防止空气从开口部分流入定影单元。