编码器

For achieve two-wheel balanced function, we used fuzzy control algorithm to program the controlled codes. About the processes of control, the encoders is used to measure the angle and angular velocity of two wheels; the gyroscopei is used to measure the angular velocity of the robot; the inclined angle is got from integrating the angular velocity, and is adjusted by angle got from tiltmeter per second.

在控制流程中，用陀螺仪测量机器人倾斜角速度，透过积分得到机器人倾斜角度，且每隔1秒就用倾斜计测量的角度来校正陀螺仪积分角度，透过马达后方的光学编码器来得知马达转动角度与角速度，将陀螺仪、倾斜计与光学编码器的资讯作为控制器的输入，以模糊控制理论计算后，控制马达转动，以达到动态平衡的目的。

The algorithm is modified. The binary arithmetic codec used in JPEG2000 system based on pipeline architecture is presented.

并且采用了流水线的结构，分别设计了基于优化算法的MQ编码器和解码器，从而大大改进了编码和解码的效率。

In addition, since Canopus's editing software is designed in-house together with our codec, the software is able to fully harness the codec's capabilities.

另外，自从 Canopus 的编辑软件 EDIUS 使用自主开发的编码器后，软件可以充分的利用到编码器的优势。

We analyse the structure of magnetic rotary encoder,its work principle,the recording media on the magnetic drum and the magnetic sensor,and introduce the application of MRE,the development prospect and Point out that MRE is very important for the development of high technology industry in the future.

论述了磁旋转编码器的结构、工作原理、磁鼓记录媒体和磁阻传感器的特性，介绍了磁旋转编码器的应用领域和使用功能，并对其发展前景进行了展望。

Based on the theory of static magnetic field, the uniform magnetization model of the surface magnetic field on multi pole magnetic drum for magnetic encoder has been built.

基于静磁场理论，建立了磁编码器多极磁鼓的表露场分布均匀磁化模型，得到了磁编码器多极磁鼓的表露场分布表达式，为多极磁鼓的参数优化设计提供了理论依据。

Based on the uniform magnetization model of the surface magnetic field distribution on multi pole drum for magnetic encoder , the surface magnetic field distribution on multi pole drum for magnetic encoder was studied with numerical analysis method, and the general expression of surface magnetic field distribution on multi pole drum was found.

基于磁编码器多极磁鼓表露场分布的均匀磁化理论模型，采用数值分析方法计算磁编码器多极磁鼓的表露场分布，得到了多极磁鼓的表露场分布的数值表达式。

Each encoder contains a lensed LED source, an integrated circuit with detectors and output circuitry, and a codewheel which rotates between the emitter and detector integrated circuit.

每个编码器包含一个透镜LED光源，一个探测器和集成电路输出电路和一个编码轮的发射器和检测器之间的旋转集成电路。

Simulation results of symmetric QPSK/8PSK modulated signals show that increasing the number of states of the coder will improve the coding gain in comparison with uncoded one.

结果表明：在对称调制信号上，调制方式分别为4PSK和8PSK模式，编码器状态数增加相对于未编码时的BPSK和QPSK编码增益可以得到提高；非对称调制信号集相对于对称调制信号集可进一步改善编码增益。

BACE algorithm has the desired property that does not reduce the encoding efficiency of the CABAC entropy encoder compared to the CIME algorithm for CAVLC entropy encoder. Both CIME and BACE algorithms can adapt to the content security level by choose the amount and different key parts of the video stream to be encrypted, the theoretical and experimental results show that both these algorithms can effectively encrypt the video content. Due to the ability of encrypting the video content without violating the syntax, the BIME and BACE algorithms can be employed used for many advanced H.264/AVC coding options without first decrypting the video stream, like Data Partition and UnEqualized Protection for the enhancement of transmission robustness, and the scalable coding in order to match the different channel capacity.

上述两种结合了H.264/AVC熵编码器特征的内容选择性加密算法，由于其加密后的视频码流的句法结构完全符合H.264/AVC视频编码标准，与传统的基于块数据的块加密算法相比较，本文提出的两种内容加密算法可以使得加密后码流在无需解密的情况下，实现H.264/AVC视频编码标准为移动视频应用而设计的诸多特性，如：增强传输鲁棒性的数据分割技术和非均衡保护技术，以及直接做匹配信道带宽的分级编码操作等，具有更高的灵活性和计算效率，从而可以灵活运用于各种应用场合。

Firstly , this article introduced the encoding and decoding principle of two kinds of coding technology, space time code uses the difference space time grouping code, the Turbo code uses two recursions systems convolution code the encoder parallel cascade, the decoding uses the SOVA algorithm.

本文先介绍两种编码技术的编解码原理，其中空时编码采用差分空时分组码，Turbo编码采用两个递归系统卷积码编码器的并行级联，译码采用SOVA算法。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。