公开(公告)号：US06199039B1

公开(公告)日：2001-03-06

申请号：US09128015

申请日：1998-08-03

申请人： Liang-Gee Chen ,  Tsung-Han Tsai ,  Yuan-Chen Liu

发明人： Liang-Gee Chen ,  Tsung-Han Tsai ,  Yuan-Chen Liu

IPC分类号： G10L2106

CPC分类号： G10L19/0208 ,  G10L19/0212

摘要： An MPEG-II audio decoder with a synthesis subband filter includes a fast IMDCT (Inverse Modified Discrete Cosine Transform) module and an IPQMF (Inverse Pseudo Quadrature Mirror Filter) module. The fast IMDCT module involves a butterfly stage of input subband samples which requires only about ¼ the amount of multiplier-accumulate computation of the ISO suggested method. The IPQMF module involves an efficient memory configuration which requires only half size of the standard synthesis subband filter bank.

摘要翻译： 具有合成子带滤波器的MPEG-II音频解码器包括快速IMDCT（逆修正离散余弦变换）模块和IPQMF（逆伪正交镜滤波器）模块。 快速IMDCT模块涉及输入子带样本的蝴蝶阶段，其仅需要ISO建议方法的乘数累加量的大约1/4。 IPQMF模块涉及高效的存储器配置，其仅需要标准合成子带滤波器组的一半。

公开(公告)号：US6166663A

公开(公告)日：2000-12-26

申请号：US354797

申请日：1999-07-16

申请人： Liang-Gee Chen ,  Tsung-Han Tsai

发明人： Liang-Gee Chen ,  Tsung-Han Tsai

IPC分类号： G10L19/14 ,  H03M7/00 ,  G10L21/00

CPC分类号： G10L19/16

摘要： A hardware structure for inverse quantization and multichannel processing in MPEG-2 audio decoding is provided, which includes 5 groups of first-in-first-out (abbreviated as FIFO) registers, each group of which has 3 FIFO registers and are connected in series; a multiplier capable for receiving an internal data processing feedback from the last FIFO group of FIFO registers; a single register; a first adder/subtractor capable for receiving a feedback from the first group of FIFO registers and its output being fed to the first group of FIFO registers; a second adder/subtractor capable for receiving a feedback from a second group of FIFO registers. The second group of FIFO registers stores an output from the second adder/subtractor or an output from the first group of FIFO registers; a third group of FIFO registers stores an output from the single register or an output from the second group of FIFO registers; a fourth group of FIFO registers stores an output from the third group of FIFO registers; and so on. The single register output the calculated value of the multiplier as an output of the structure or to at least one of the first second adder/subtractor, second adder/subtractor and the third group of FIFO registers.

摘要翻译： 提供了一种用于MPEG-2音频解码中的逆量化和多通道处理的硬件结构，其包括5组先进先出（FIFO）寄存器，每组具有3个FIFO寄存器并串联连接 ; 能够接收来自FIFO寄存器的最后FIFO组的内部数据处理反馈的乘法器; 单一登记册 第一加法器/减法器，能够接收来自第一组FIFO寄存器的反馈，其输出被馈送到第一组FIFO寄存器; 第二加法器/减法器，能够接收来自第二组FIFO寄存器的反馈。 第二组FIFO寄存器存储来自第二加法器/减法器的输出或来自第一组FIFO寄存器的输出; 第三组FIFO寄存器存储来自单个寄存器的输出或来自第二组FIFO寄存器的输出; 第四组FIFO寄存器存储来自第三组FIFO寄存器的输出; 等等。 单个寄存器输出乘法器的计算值作为结构的输出或第一加法器/减法器，第二加法器/减法器和第三组FIFO寄存器中的至少一个。

公开(公告)号：US06370501B1

公开(公告)日：2002-04-09

申请号：US09296878

申请日：1999-04-22

申请人： Liang-Gee Chen ,  Tsung-Han Tsai ,  Ren-Jr Wu

发明人： Liang-Gee Chen ,  Tsung-Han Tsai ,  Ren-Jr Wu

IPC分类号： G10L1900

CPC分类号： G10L19/16

摘要： The invention describes a simple and efficient codeword degrouping algorithm which can be applied in an MPEG audio decoder, in which a codeword is degrouped into three samples. According to the proposed algorithm, the division and modulo computations applied in the original degrouping method can be fully substituted into the addition and subtraction computations by using the mode selection and iterative decompositions, and thus largely reduces the overhead and complexity for the decoder. Also, an efficient architecture for the proposed algorithm includes one special adder, two subtractors, and two adders. The architecture generates the quotient and remainder simultaneously with fix-rate throughput.

摘要翻译： 本发明描述了可以应用于MPEG音频解码器中的简单有效的码字去分组算法，其中码字被分组成三个样本。 根据所提出的算法，通过使用模式选择和迭代分解，将原始去分组方法中应用的划分和模计算完全代入加法和减法运算，从而大大降低了解码器的开销和复杂度。 此外，所提出的算法的有效架构包括一个特殊加法器，两个减法器和两个加法器。 该架构在固定速率吞吐量的同时产生商和余数。

公开(公告)号：USD788976S1

公开(公告)日：2017-06-06

申请号：US29553018

申请日：2016-01-28

申请人： Tsung-Han Tsai

设计人： Tsung-Han Tsai

公开(公告)号：US08879169B2

公开(公告)日：2014-11-04

申请号：US13546481

申请日：2012-07-11

申请人： Dung-Yi Hsieh ,  Tsung-Han Tsai ,  Wei-Yu Chen

发明人： Dung-Yi Hsieh ,  Tsung-Han Tsai ,  Wei-Yu Chen

IPC分类号： G02B13/18 ,  G02B9/12 ,  G02B9/04

CPC分类号： G02B13/0035

摘要： This invention provides an image capturing lens system comprising three non-cemented lens elements with refractive power: a first lens element with positive refractive power having a convex object-side surface, and both the object-side and image-side surfaces being aspheric; a plastic second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, and both the object-side and image-side surfaces being aspheric; and a plastic third lens element having a convex object-side surface and a concave image-side surface, and both the object-side and image-side surfaces being aspheric. By such arrangement, the space of the image capturing lens system can be allocated much more properly and thereby an image capturing lens system with shorter total track length can be obtained while retaining superior image quality.

摘要翻译： 本发明提供了一种摄影镜头系统，包括具有屈光力的三个非胶合透镜元件：具有凸起物体侧表面的具有正折光力的第一透镜元件，并且物体侧和像侧表面均为非球面; 具有负折射力的塑料第二透镜元件，具有凹面物侧表面和凸像侧表面，物侧和像侧表面均为非球面; 以及具有凸形物侧表面和凹形图像侧表面的塑料第三透镜元件，并且物体侧和像侧表面都是非球面的。 通过这样的配置，可以更正确地分配图像拍摄透镜系统的空间，从而可以获得具有较短总轨道长度的图像拍摄透镜系统，同时保持优异的图像质量。

公开(公告)号：US08792185B2

公开(公告)日：2014-07-29

申请号：US13594197

申请日：2012-08-24

申请人： Chih-Wen Hsu ,  Ming-Ta Chou ,  Tsung-Han Tsai

发明人： Chih-Wen Hsu ,  Ming-Ta Chou ,  Tsung-Han Tsai

IPC分类号： G02B3/02 ,  G02B13/00

CPC分类号： G02B13/0045 ,  G02B13/06 ,  G02B13/18

摘要： An image lens system includes, in order from an object side to an image side, a first lens element with negative refractive power including a concave image-side surface; a second lens element with positive refractive power including a convex object-side surface; a third lens element with negative refractive power including an object-side surface and a concave image-side surface, the object-side surface and the image-side surface being aspheric; a fourth lens element with positive refractive power including a convex object-side surface and a convex image-side surface; and a fifth lens element with negative refractive power including a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface being aspheric, the fifth lens element having at least one inflection point.

摘要翻译： 一种图像透镜系统，从物体侧到像侧依次包括具有凹面像侧面的负折光力的第一透镜元件; 具有正折射力的第二透镜元件，包括凸面物侧表面; 具有负屈光力的第三透镜元件，包括物体侧表面和凹面像侧表面，物体侧表面和图像侧表面是非球面的; 具有正折射力的第四透镜元件，包括凸面物侧表面和凸像侧面; 以及具有负屈光力的第五透镜元件，包括凸面物侧表面和凹面像侧表面，所述物体侧表面和所述像侧表面是非球面的，所述第五透镜元件具有至少一个拐点。

公开(公告)号：US08705181B2

公开(公告)日：2014-04-22

申请号：US13615568

申请日：2012-09-13

申请人： Po-Lun Hsu ,  Tsung-Han Tsai ,  Ming-Ta Chou

发明人： Po-Lun Hsu ,  Tsung-Han Tsai ,  Ming-Ta Chou

IPC分类号： G02B13/18

CPC分类号： G02B13/0045

摘要： An image capturing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has positive refractive power. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, wherein at least one of the object-side surface and the image-side surface of the fourth lens element is aspheric. The fifth lens element with refractive power has a concave image-side surface, wherein at least one of an object-side surface and the image-side surface of the fifth lens element is aspheric, and the fifth lens element has at least one inflection point on the image-side surface thereof.

摘要翻译： 第一透镜元件，第二透镜元件，第三透镜​​元件，第四透镜元件和第五透镜元件，从物体侧到像侧依次包括图像捕获系统。 具有正折光力的第一透镜元件具有凸的物体侧表面。 第二透镜元件具有负屈光力。 第三透镜元件具有正的折光力。 具有负屈光力的第四透镜元件具有凹入的物体侧表面和凸形的图像侧表面，其中第四透镜元件的物体侧表面和图像侧表面中的至少一个是非球面的。 具有屈光力的第五透镜元件具有凹形的图像侧表面，其中第五透镜元件的物体侧表面和图像侧表面中的至少一个是非球面的，并且第五透镜元件具有至少一个拐点 在其图像侧表面上。

公开(公告)号：US08687293B2

公开(公告)日：2014-04-01

申请号：US13091817

申请日：2011-04-21

申请人： Chun-Shan Chen ,  Tsung-Han Tsai ,  Hsin-Hsuan Huang

发明人： Chun-Shan Chen ,  Tsung-Han Tsai ,  Hsin-Hsuan Huang

IPC分类号： G02B9/60 ,  G02B13/18 ,  G02B3/02

CPC分类号： G02B13/0045 ,  G02B5/208 ,  G02B9/60 ,  G02B13/002 ,  G02B13/18

摘要： An optical imaging system includes, in order from an object side to an image side, a first lens element with a positive refractive power, a second lens element, a third lens element, a fourth lens element with a positive refractive power having an aspheric surface and a fifth lens element with a negative refractive power. An image-side surface of the fifth lens element is concave, and at least one of two surfaces of the fifth lens element is aspheric. The relationship between a sum of thicknesses of all lens elements with refractive powers on an optical axis and a distance on the optical axis between an object-side surface of the first lens element and the image-side surface of the fifth lens element in the optical imaging system can effectively reduce the total length as well as the sensitivity of the optical imaging system while gaining superior resolution.

摘要翻译： 光学成像系统从物体侧到图像侧依次包括具有正屈光力的第一透镜元件，第二透镜元件，第三透镜​​元件，正折射光焦度的第四透镜元件，具有非球面 以及具有负屈光力的第五透镜元件。 第五透镜元件的像侧表面是凹形的，并且第五透镜元件的两个表面中的至少一个是非球面的。 在光轴上具有折射力的所有透镜元件的厚度之和与第一透镜元件的物侧表面与第五透镜元件的图像侧表面之间的光轴上的距离之间的关系 成像系统可以有效降低光学成像系统的总长度和灵敏度，同时获得更好的分辨率。

公开(公告)号：US08649112B2

公开(公告)日：2014-02-11

申请号：US13602334

申请日：2012-09-04

申请人： Tsung-Han Tsai ,  Ming-Ta Chou

发明人： Tsung-Han Tsai ,  Ming-Ta Chou

IPC分类号： G02B13/18 ,  G02B9/60

CPC分类号： G02B13/0045

摘要： An image lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element with refractive power is made of plastic material, and has at least one surface being aspheric. The fourth lens element with refractive power is made of plastic material, and has a concave object-side surface and a convex image-side surface, wherein at least one surface of the fourth lens element is aspheric. The fifth lens element with positive refractive power is made of plastic material, and has a convex object-side surface and a convex image-side surface, wherein at least one surface of the fifth lens element is aspheric.

摘要翻译： 第一透镜元件，第二透镜元件，第三透镜​​元件，第四透镜元件和第五透镜元件，从物体侧到像侧依次包括图像透镜组件。 具有正折光力的第一透镜元件具有凸的物体侧表面。 第二透镜元件具有负屈光力。 具有屈光力的第三透镜元件由塑料材料制成，并且具有至少一个非球面的表面。 具有屈光力的第四透镜元件由塑料材料制成，并且具有凹形的物体侧表面和凸形的图像侧表面，其中第四透镜元件的至少一个表面是非球面的。 具有正屈光力的第五透镜元件由塑料材料制成，并且具有凸形的物体侧表面和凸形的图像侧表面，其中第五透镜元件的至少一个表面是非球面的。

公开(公告)号：US20130250441A1

公开(公告)日：2013-09-26

申请号：US13540981

申请日：2012-07-03

申请人： Tsung-Han Tsai ,  Wei-Yu Chen

发明人： Tsung-Han Tsai ,  Wei-Yu Chen

IPC分类号： G02B3/02

CPC分类号： G02B13/0035

摘要： This invention provides an imaging lens system in order from an object side to an image side comprising: a first lens element with positive refractive power; a plastic second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, both surfaces thereof being aspheric; and a plastic third lens element with negative refractive power having a convex object-side surface and a concave image-side surface, both surfaces thereof being aspheric, and at least one inflection point is formed on at least one of the object-side and image-side surfaces thereof. Additionally, the central thickness of the second lens element is controlled favorably for the efficient spatial arrangement of the lens assembly and the simpler individual lens production while maintaining suitable thickness of the second lens element, thereby assuring image quality and improving yield rate of the product.

摘要翻译： 本发明提供从物体侧到像侧的顺序的成像透镜系统，包括：具有正折射光焦度的第一透镜元件; 具有负屈光力的塑料第二透镜元件，具有凹面物侧表面和凸像侧表面，其两个表面均为非球面; 以及具有负屈光力的塑料第三透镜元件，具有凸面物侧表面和凹面像侧表面，其两个表面均为非球面，并且至少一个拐点形成在物体侧和图像中的至少一个上 其表面。 此外，第二透镜元件的中心厚度被有利地控制用于透镜组件的有效空间布置和更简单的单个透镜生产，同时保持第二透镜元件的适当厚度，从而确保图像质量并提高产品的屈服率。