Abstract: An optical mouse is operated on a work surface and includes at least one light emitter for emitting a light beam; a light receiver contained by a casing; a rolling ball arranged on the casing and opposite to the light receiver. The light beam has only one reflection by the rolling ball during an optical path thereof and then is detected by the light receiver. The rolling ball is made of transparent material and the distance thereof with the light receiver is adjustable to vary image resolution. The optical mouse can be turned over and placed on a notebook computer for using as a track ball.

Abstract: A method for fast multiple reference frame motion estimation, which is used to perform motion estimation between a current frame and reference frames Fn?1, Fn?2, . . . , Fn?k. The method performs a special block matching to find a plurality of motion vectors for blocks of each frame with respective to a previous frame and then composes motion vector(s) of the current frame referring to the reference frame Fn?(k?1) and a motion vector of the reference frame Fn?(k?1) referring to the reference frame Fn?k into composed motion vectors of the current frame referring to the reference frame Fn?k for the block in the current frame. The method selects a composed motion vector with a minimum of cost function from the composed motion vectors produced when composing the motion vectors and then finely adjusts the composed motion vector selected, thereby obtaining an adjusted motion vector.

Abstract: Methods and systems for fast variable block-size motion estimation based on merging and splitting procedures for AVC video encoding are disclosed. The methods take advantage of the correlation of the Motion Vectors (MVs) of the different block-size modes to achieve a good computation reduction. Considering that the smaller the block-size difference between two block-sizes is, the more correlations between their MVs can be expected, the methods use a 8*8 block as an initial processing block to calculate prediction MVs. The prediction MVs are then used in predicting MVs for other block-sizes.

Abstract: A light guide plate and method for fabricating the same are proposed. An injection molding process is performed to form at least an arc-shaped first opening portion on the light guide plate, so that a concave lens structure is formed on an edge of the first opening portion to be in line with a light source. By such arrangement, the concave lens structure can direct light and achieve a uniform light dispersion effect.

Abstract: The present invention relates to a Microelectro mechanical system structure. More specifically the invention relates to utilize a sacrificial layer to fabricate an air bearing structure, followed by forming an aperture, and reducing the aperture to nano-scale by electroplating. And then, by using of two thick film photoresist films for twice electroplating fabrication, for fabricate metal microcoils having high aspect ratio structure and interconnection metal line, to achieve efficiencies of utilizing area and reducing resistance. Moreover, proceed lithography depends on different portions and exposure dose.

Abstract: The present invention relates to process for fabricating supersphere solid immersion lens (SSIL). The procedure of the present invention comprises the steps of: firstly, coating a positive photoresist layer on a substrate, followed by first exposure and second exposure with different exposure dose separately by first mask and second mask to form the positive photoresist structure with different dimensions and depths. The first exposure dose is supplied enough to make sure the patterns of the first mask can be observed on the positive photoresist layer during the alignment of the second exposure process. And the following reflow process forms a supersphere solid immersion lens (SSIL) structure.

Abstract: A system and method are disclosed for adaptively accommodating a high amplitude downstream signal in a DSL modem. High amplitude downstream signals are common with local loop lengths of less than about 6,000 feet and can saturate DSL modem components and impair DSL service if not effectively accommodated. In general, a DSL system detects a high amplitude downstream DSL signal and adjusts a DSL modem analog front end in response to the detected high amplitude downstream DSL signal so that analog front end components of a DSL modem are not saturated by the high amplitude downstream DSL signal. Pursuant to one embodiment, a digital signal processor detects the high amplitude DSL signal and, in response, decreases a gain of a first stage receiver to accommodate the high amplitude downstream DSL signal. Another embodiment introduces additional attenuation of the downstream DSL signal to attenuate high amplitude downstream DSL signals before they enter first stage receiver amplifier circuits.

Abstract: A combination modem including at least one line connector that is configured for coupling to a transmission medium, analog modem logic that is capable of performing analog modem communications via the transmission medium, digital modem logic that is capable of performing digital modem communications via the transmission medium, a bus interface that enables communication with a computer via an expansion bus of the computer, and processing logic. In this manner a single modem expansion card supports both analog and digital modem technologies using only one slot of an expansion bus of the computer. The analog modem logic may support 56K technologies, such as K56Flex™, V.90, etc., or any combination thereof. The digital modem logic may be according to any type of xDSL, such as ADSL, or U-ADSL, etc. The modem may operate as an analog modem, a digital modem, or as both at the same time with or without a POTS splitter.

Abstract: A system and method for coupling multiple home networks includes a first copper wire network, a second copper wire network, and a high pass coupler disposed between the first and second copper wire networks. The high pass coupler is configured to transfer data signals between the first and second copper wire networks, the data signals having frequencies greater than a maximum plain old telephone service signal frequency. Further, the high pass coupler is configured to prevent cross-talk of plain old telephone service, or voice-band, signals between the first and second copper wire networks. The data signals transferred typically include signals in accordance with the Home Phoneline Networking Alliance standard, and may also include broadband Internet access signals. In one embodiment, the high pass coupler is implemented in a residential gateway device.

Abstract: An optical mouse is operated on a work surface and includes at least one light emitter for emitting a light beam; a light receiver contained by a casing; a rolling ball arranged on the casing and opposite to the light receiver. The light beam has only one reflection by the rolling ball during an optical path thereof and then is detected by the light receiver. The rolling ball is made of transparent material and the distance thereof with the light receiver is adjustable to vary image resolution. The optical mouse can be turned over and placed on a notebook computer for using as a track ball.

Abstract: An optical mouse includes at least one light emitter for emitting a light beam; a light receiver contained by a casing; a focusing lens arranged on the casing and placed between the light receiver and the work surface; wherein the light beam has only one reflection by the work surface during an optical path thereof and then propagates to the light receiver through the lens. The focusing lens can be replaced by a transparent dustproof lid, while the optical mouse still has acceptable efficiency.

Abstract: Methods and systems for providing a video stream from a server to a client over a network include a memory for storing a forward-encoded bit-stream and a reverse-encoded bit-stream for a video data. The forward-encoded bit-stream includes I-frames encoded without inter-frame dependencies and P-frames encoded depending on forward-direction preceding frames, and the reverse-encoded bit-stream includes I-frames and P-frames encoded depending on reverse-direction preceding frames. When the server receives a request with a video cassette recording (VCR) function from the client, the server reads out and transmits frames selectively from among the first, second, third, and fourth frames in accordance with the request. The server can select the closest I-frame to a requested frame in either bit-stream for a fast-mode play or a random-access play, and switch the bit-streams to use subsequent P-frames in a different direction than that of the closest I-frame.

Abstract: An odd-order low-pass microfilter is disclosed for being interposed between a home telephone wiring network and a POTS, or voice band, device to separate voice-band signals from higher frequency signals, such as ADSL signals and home networking signals. The filter topology is substantially symmetric so that the filter is reversible in that either end of the filter may be directly coupled to the home telephone wiring network without impairing high frequency signal performance or the filter characteristic of the filter. In one embodiment, the filter is a three-pole filter with a single capacitor disposed between a pair of coupled inductors. Each of the coupled inductors advantageously has an interwinding capacitance over about 100 pF to improve the filter frequency response without increasing the cost of the filter. In another embodiment, the filter is a reversible three-pole filter with a single capacitor disposed between first and second pairs of uncoupled, or discrete, inductors.

Abstract: A transcoder for transcoding digital video signals includes a decoder and an encoder. In the decoder, an end-of-block (EOB) position of an incoming block received by the decoder is determined and a discrete cosine transform (DCT) block type is determined based on the determined EOB position. A reduced number of DCT coefficients is computed in a subsequent inverse DCT computation based on the DCT block type. In the encoder, if the incoming block is intercoded, no DCT coefficients are computed after the EOB of the incoming blocks is performing a DCT. Further, in the encoder when the incoming block is intercoded, an algorithm is applied to predict which DCT coefficients may become zero after a subsequent quantization operation, and only DCT coefficients that may not become zero are computed in performing the DCT.

Abstract: Methods and systems for providing a video stream from a server to a client over a network include a memory for storing a forward-encoded bit-stream and a reverse-encoded bit-stream for a video data, The forward-encoded bit-stream includes I-frames encoded without inter-frame dependencies and P-frames encoded depending on forward-direction preceding frames, and the reverse-encoded bit-stream includes I-frames and P-frames encoded depending on reverse-direction preceding frames. When the server receives a request with a video cassette recoding (VCR) function from the client, the server reads out and transmits frames selectively from among the first, second, third, and fourth frames in accordance with the request. The server can select the closest I-frame to a requested frame in an either bit-stream for a fast-mode play or a random-access play, and switch the bit-streams to use subsequent P-frames in a different direction than that of the closest I-frame.

Abstract: A transcoder for transcoding digital video signals includes a decoder and an encoder. In the decoder, an end-of-block (EOB) position of an incoming block received by the decoder is determined and a discrete cosine transform (DCT) block type is determined based on the determined EOB position. A reduced number of DCT coefficients is computed in a subsequent inverse DCT computation based on the DCT block type. In the encoder, if the incoming block is interceded, no DCT coefficients are computed after the EOB of the incoming blocks is performing a DCT. Further, in the encoder when the incoming block is intercoded, an algorithm is applied to predict which DCT coefficients may become zero after a subsequent quantization operation, and only DCT coefficients that may not become zero are computed in performing the DCT.

Abstract: Methods and systems for generating motion vectors for re-encoding video signals are disclosed. The motion vector is determined by the sum of a base motion vector and a delta motion vector. In the case of no frame-skipping, the base motion vector is the incoming motion vector. In the case of frame skipping, the base motion vector is the sum of the motion vectors of the incoming signal since the last re-encoded frame and the current frame. The delta motion vector is optimized by a minimum Sum of the Absolute Difference by searching over a smaller area than if searching for a new motion vector without a delta motion vector. These methods and systems may be used to improve re-encoding digital video signals.

Abstract: Methods and systems for generating motion vectors for re-encoding video signals are disclosed. The motion vector is determined by the sum of a base motion vector and a delta motion vector. In the case of no frame-skipping, the base motion vector is the incoming motion vector. In the case of frame skipping, the base motion vector is the sum of the motion vectors of the incoming signal since the last re-encoded frame and the current frame. The delta motion vector is optimized by a minimum Sum of the Absolute Difference by searching over a smaller area than if searching for a new motion vector without a delta motion vector. These methods and systems may be used to improve re-encoding digital video signals.

Abstract: An odd-order low-pass filter is disclosed for being interposed between a home telephone wiring network and a POTS, or voice-band, device to separate voice-band signals from higher frequency signals, such as ADSL signals and home networking signals. In one embodiment, the filter includes a pair of coupled inductors separated by a capacitor to isolate the POTS device from DSL signals. Each coupled inductor includes a pair of inductor windings wrapped about an inductor core. A resistive element positioned in parallel with each of the windings reduces interference between resonant xDSL signals and operation of an associated caller ID device.

Abstract: A combination modem including at least one line connector that is configured for coupling to a transmission medium, analog modem logic that is capable of performing analog modem communications via the transmission medium, digital modem logic that is capable of performing digital modem communications via the transmission medium, a bus interface that enables communication with a computer via an expansion bus of the computer, and processing logic. In this manner a single modem expansion card supports both analog and digital modem technologies using only one slot of an expansion bus of the computer. The analog modem logic may support 56K technologies, such as K56Flex™, V.90, etc., or any combination thereof. The digital modem logic may be according to any type of xDSL, such as ADSL, or U-ADSL, etc. The modem may operate as an analog modem, a digital modem, or as both at the same time with or without a POTS splitter.