公开(公告)号：US07031776B2

公开(公告)日：2006-04-18

申请号：US10056793

申请日：2002-01-23

申请人： Alan Y. Chow ,  Vincent Y. Chow

发明人： Alan Y. Chow ,  Vincent Y. Chow

IPC分类号： A61N1/05

CPC分类号： A61F9/0017 ,  A61N1/0543 ,  A61N1/36046

摘要： Methods of using electrical stimulation by itself or in conjunction with growth factors to treat and prevent visual loss due to choroidal, retinal pigment epithelial and/or neuroretinal cell degeneration and dysfunction are presented.

公开(公告)号：US07003354B2

公开(公告)日：2006-02-21

申请号：US10142277

申请日：2002-05-09

申请人： Alan Y. Chow ,  Vincent Y. Chow

发明人： Alan Y. Chow ,  Vincent Y. Chow

IPC分类号： A61N1/18

CPC分类号： A61N1/0543 ,  A61F9/08 ,  A61N1/36046

摘要： An artificial retinal device, implanted in the subretinal space of the eye in persons with certain types of retinal blindness, induces artificial vision by electrical stimulation of the remaining viable cells of the retina. The artificial retina device includes a stimulating electrode unit preferably placed in the subretinal space, and a tail-like extension housing a distant electrical return ground electrode unit that may be placed in the vitreous cavity. The stimulating electrode unit includes an array of electrode subunits. Each electrode subunit includes one or more microphotodiodes electrically connected, for example, in series to provide increased voltage and current to its microelectrode. The stimulating electrode unit and the ground return electrode of the ground return electrode unit are preferably disposed on opposite sides of the neuroretina to allow for efficient and high resolution transretinal electrical stimulation of the neuroretinal cells. Additional photodiodes may be incorporated into the circuitry of the artificial retina device to provide additional bias voltage and current to the microelectrode subunits of the stimulating electrode unit. In another preferred embodiment, the ground return electrode in the tail-like extension is disposed in the capsular bag of the eye, after lens nucleus and cortex removal, where it is electrically connected to an additional bias photodiode or photodiodes.

公开(公告)号：US06904239B2

公开(公告)日：2005-06-07

申请号：US10615857

申请日：2003-07-09

申请人： Alan Y. Chow ,  Vincent Y. Chow

发明人： Alan Y. Chow ,  Vincent Y. Chow

IPC分类号： H04B10/158 ,  H04J14/02 ,  H04Q11/00 ,  H04J14/00 ,  H04B10/06 ,  H04B10/12 ,  H04J14/08

CPC分类号： H04B10/69 ,  H04B10/691 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0298 ,  H04Q2011/0039 ,  H04Q2011/0069 ,  H04Q2011/0077

摘要： A system and method are disclosed for carrying additional information data on multiplexed signals which are modulated on different wavelengths. An information code such as an address or control data for a particular data signal at a selected wavelength is overlaid on the parallel multiplexed signals. The information code may be overlaid by attenuation or changing the amplitude of the different signals. A separate marker channel at a separate wavelength is also multiplexed with the data signals to indicate the presence of an information code. An optical data detector array is used to optically determine the encoded address by comparing the signals with light levels and producing an output when a matching code is detected. The optical data detector array uses a series of detectors each corresponding to the wavelength of light signals carrying the information data. The detectors each have two photo detectors which are wired in parallel with each other to produce a voltage output when different light levels are detected on the two photo detectors. Using the information codes, an optical buffer may be realized which allows true optical switching of a data signal on detection of a matching information code. Alternatively, optical signals may be cross connected to balance data traffic through a fiber optic cable.

摘要翻译： 公开了用于承载在不同波长上调制的多路复用信号的附加信息数据的系统和方法。 诸如用于所选波长的特定数据信号的地址或控制数据的信息码被叠加在并行多路复用信号上。 信息码可能会被衰减或改变不同信号的幅度所覆盖。 在单独的波长处的单独的标记通道也与数据信号多路复用以指示信息代码的存在。 光学数据检测器阵列用于通过将信号与光级进行比较来光学地确定编码的地址，并且当检测到匹配的代码时产生输出。 光学数据检测器阵列使用一系列检测器，每个检测器对应于携带信息数据的光信号的波长。 每个检测器具有两个彼此并联布线的光电检测器，以在两个光电检测器上检测到不同的光级时产生电压输出。 使用信息代码，可以实现光学缓冲器，其允许在检测到匹配信息代码时对数据信号进行真正的光切换。 或者，光信号可以被交叉连接以通过光纤电缆来平衡数据业务。

公开(公告)号：US06609840B2

公开(公告)日：2003-08-26

申请号：US09828337

申请日：2001-04-05

申请人： Alan Y. Chow ,  Vincent Y. Chow

发明人： Alan Y. Chow ,  Vincent Y. Chow

IPC分类号： H04J400

CPC分类号： H04B10/69 ,  H04B10/691 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0298 ,  H04Q2011/0039 ,  H04Q2011/0069 ,  H04Q2011/0077

摘要： A system and method are disclosed for carrying additional information data on multiplexed signals which are modulated on different wavelengths. An information code such as an address or control data for a particular data signal at a selected wavelength is overlaid on the parallel multiplexed signals. The information code may be overlaid by attenuation or changing the amplitude of the different signals. A separate marker channel at a separate wavelength is also multiplexed with the data signals to indicate the presence of an information code. An optical data detector array is used to optically determine the encoded address by comparing the signals with light levels and producing an output when a matching code is detected. The optical data detector array uses a series of detectors each corresponding to the wavelength of light signals carrying the information data. The detectors each have two photo detectors which are wired in parallel with each other to produce a voltage output when different light levels are detected on the two photo detectors. Using the information codes, an optical buffer may be realized which allows true optical switching of a data signal on detection of a matching information code. Alternatively, optical signals may be cross connected to balance data traffic through a fiber optic cable.

公开(公告)号：US6069365A

公开(公告)日：2000-05-30

申请号：US312249

申请日：1999-05-14

申请人： Alan Y. Chow ,  Vincent Y. Chow

发明人： Alan Y. Chow ,  Vincent Y. Chow

IPC分类号： H04B10/00 ,  H04B10/152 ,  H04N5/374 ,  G02B27/00

CPC分类号： H04B10/032 ,  H04N3/1512 ,  H04N3/155

摘要： An image processing system for capturing and compressing images into a digital format is disclosed. The system has an array of imaging pixel elements which consist of two photodiode detectors. One photodiode detector is a capture detector while the other detector is a reference detector. The capture detector has an anode electrically coupled to the cathode of the reference detector. The cathode of the capture detector is electrically coupled to the anode of the reference detector. An image may be compared to a reference image detected by the reference detector. Different levels of light between the captured image and the reference image change the electrical output of the opsistor. Image compression is facilitated since only pixel elements which change from frame to frame need be stored. Additionally, a processing and compression circuit may use column and row scans to eliminate unchanged pixels and store only pixels with different light levels between images.

摘要翻译： 公开了一种图像处理系统，用于将图像采集和压缩为数字格式。 该系统具有由两个光电二极管检测器组成的成像像素元件阵列。 一个光电二极管检测器是捕获检测器，而另一个检测器是参考检测器。 捕获检测器具有电耦合到参考检测器的阴极的阳极。 捕获检测器的阴极电耦合到参考检测器的阳极。 可以将图像与由参考检测器检测到的参考图像进行比较。 拍摄图像和参考图像之间的不同级别的光线会改变opsistor的电气输出。 图像压缩是有利的，因为只需要存储从帧到帧改变的像素元素。 此外，处理和压缩电路可以使用列扫描和行扫描来消除不变像素，并且仅存储图像之间具有不同光级的像素。

公开(公告)号：US6020593A

公开(公告)日：2000-02-01

申请号：US977852

申请日：1997-11-25

申请人： Alan Y. Chow ,  Vincent Y. Chow

发明人： Alan Y. Chow ,  Vincent Y. Chow

IPC分类号： G01D21/00 ,  H01L25/16 ,  H01L27/14 ,  H01L27/146 ,  H01L31/08 ,  H01L31/10 ,  H03K17/00 ,  H03K17/78 ,  H04B10/00 ,  H04N7/24 ,  G02B27/00

CPC分类号： H04B10/032 ,  H04N3/1506 ,  H04N3/1512 ,  H04N3/155

摘要： The present invention relates to a transmission method and device for efficient compression of digital data. The invention uses an optoelectronic coupler to receive light signals from a light transmitter at two bandwidths. A modulated signal generator is coupled to the transmitter which coverts voltage phase data signals to light signals. The data signals are modulated with a plurality of master profiles and subprofiles with different cycle time variations. The optoelectronic coupler has a pair of photodiodes. Light filters disposed on both diodes allow either the first or second bandwidth of light to pass. Conductors electrically couple the anode of the each photodiode to the cathode of the other photodiode which produce the voltage phase signal. A signal receiver is connected to the coupler and decodes the voltage-phase signal.

摘要翻译： 本发明涉及数字数据有效压缩的传输方法和装置。 本发明使用光电耦合器以两个带宽从光发射器接收光信号。 调制信号发生器耦合到发射器，其将电压相位数据信号覆盖到光信号。 数据信号用具有不同周期时间变化的多个主配置文件和子配置进行调制。 光电耦合器具有一对光电二极管。 布置在两个二极管上的滤光片允许光的第一或第二带宽通过。 导体将每个光电二极管的阳极电耦合到产生电压相位信号的另一个光电二极管的阴极。 信号接收器连接到耦合器并解码电压相位信号。