查询词典 decoder

Because of the heavy calculation requirement for HDTV video realtime decoding, considering the situation of our country and this project and based on the idea of parallel processing, a novel HDTV video decoder architecture which utilizes SDTV video decoder ASIC by cross-division is proposed.

由于实现高清晰度电视视频实时解码所需的运算量巨大，针对我们国家以及本项目的实际情况，基于并行处理的思想，提出了采用SDTV视频解码ASIC，进行十字划分的HDTV视频解码方案。

Their advantages and disadvantages are discussed and a full digital asynchronous sampling method is devised to meet the integrating need by the decoder. Based on this method, we designed a hardware project, which can make the decoder independent from the sampling clock PLL .

针对解码器高集成化的需求，设计了全数字的异步采样方案；在此基础上提出了一种适合视频解码器的硬件实现方法，该方法采用全数字实现，摆脱了对片外锁相环的依赖。

The principle of On2 VP6 video decoder is introduced at first,and then the complexity of decoder is analyzed.Both IDCT(inverse discrete cosine transform) and color space conversion,two most timeconsuming modules of decoder,are carried out the optimization of algorithm.

首先介绍了On2 VP6视频解码器的原理，对其复杂度进行了分析，然后对IDCT(inverse discrete cosine transform)、颜色空间转换等解码器中最耗时的两个模块进行了算法优化。

The layered video decoding system comprises a base layer decoder for receiving and decoding a base layer video stream; and an enhancement layer decoder for receiving an enhancement layer video stream and the decoded base layer stream, and generating a decoded enhanced video output, wherein the enhancement layer decoder includes: a plurality of inverse discrete cosine transform /IDCT modules; and a selection system for selecting one of the IDCT modules.

分层视频译码系统包括：基本层译码器，用于接收和译码基本层视频流；和增强层译码器，用于接收增强层视频流和所译码的基本层流，并生成译码的增强的视频输出，其中该增强层译码器包括：多个反离散余弦变换模块；和用于选择其中一个IDCT模块的选择系统。

The VLMIW method make the VLMIW instruction set effective and growing-up. VLMIW has two architecture interface (macro instruction set interface and macro instruction design interface). The scale of decoder is small, the delay of decoder is also small, but the function of instruction is very powerful.

可变长宏指令体系设计方法使得VLMIW指令集合具有效率高、可繁衍的特点，可以支持两个体系界面（宏指令集合、宏指令设计界面），且译码控制简单，实现所用的电路规模小。

In this paper,the decoder is designed using modified Euclidean algorithm,the public extraction algorithm is used to optimize the muhi- plier,and the complexity and the power consumption of RS decoder are reduced by using the iteration and multiple methods.

文中设计的译码器采用修正的欧几里德算法，并在实现中采用公共项提取算法有效地优化了乘法器，以迭代、复用等方法降低了RS码译码硬件实现的复杂度。

A new decoder architecture is proposed to solve the problem of huge resources use in traditional LDPC decoder, which needs less logic resources and memory resources by dividing submatrix to improve serial factor of decoder.

针对传统译码器硬件资源消耗巨大的缺陷，提出一种新型的译码器硬件实现方案，通过切割子矩阵的方法，进一步提高硬件结构的串行度，从而大大减少了逻辑资源和存储块的使用。

The high speed multiplex first-in first-out storage structure includes at least two memory unit arrays, one integrated decoder circuit between the two memory unit arrays, one write-in control circuit over the decoder circuit, one read-out control circuit below the decoder circuit, two data buffers on the two memory unit arrays separately, two multiplex circuits and two output circuits below the two memory unit arrays separately, and one write-1 clock buffer and one read-out clock buffer over and below the decoder circuit separtely.

一种高速多路先进先出存储器结构，包括一至少两存储单元阵列、一位于至少两存储单元阵列中间的整体解码电路、分别位于整体解码电路的上下的一写入控制电路及一读出控制电路、分别位于至少两存储单元阵列上的两数据输入缓冲器以及依序位于两存储单元阵列下的两多工电路及两输出电路，在整体解码电路的上下分别设置一写入时钟缓冲器及一读出时钟缓冲器。

This paper introduced code theory and the common RS codec algorithm, the implementation of RS encoder, then detailedly analyse the decoder realization of BM algorithm and ME algorithm, then bring forward implementation and improvement of a pipeline structure errors and erasures correcting RS decoder on ME algorithm, compromise the decoder complexity and delay to reduce the complexity and raise the maximum operating frequency. Finite-field multipliers optimize codec circuit.

本文首先介绍了编码理论和常用的RS编译码算法，提出RS编码器实现方案，详细分析了译码器的ME算法和改进BM算法的实现，针对ME算法提出了一种流水线结构的纠删纠错RS译码器实现方案，在译码器复杂度和延时上作了折衷，降低了译码器的复杂度并提高了最高工作频率，利用有限域乘法器的特性对编译码电路进行优化。

Due to the smart adjustment, our decoding algorithm, on one hand can break the symmetric degeneracy, and on the other hand can feed back more useful information to the SPA decoder to help the decoder determine a valid output, thereby significantly improving the decoding ability of the decoder.

我们的反馈式策略起到了经典译码中的软判决技术的作用，不但克服了对称简并问题带来的不利影响，更重要的是还给译码器提供了更多的有效信息，从而大大提高了译码器的纠错译码能力。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。