Abstract: A guide mechanism is configured for guiding an optical pick-up head to move on a chassis. The guide mechanism includes a carriage, a first guide rail, a second guide rail, and a buffering device. The carriage includes a main body for receiving the optical pick-up head, and a first engaging portion and a second engaging portion formed on two opposite sides of the main body. The first guide rail is slidably received in a slot of the first engaging portion. The second guide rail is slidably engaging with the second engaging portion. The buffering device is clipped between the first guide rail and the first engaging portion. An optical disk drive using the guide mechanism is also provided.

Abstract: According to one aspect, an optical read/write device for reading and/or writing an optical disk includes a rack disposed between the worm gear and the optical pickup head for transferring motion from the worm gear to the optical pickup head. The rack includes a fastening portion for fixing the rack to the optical pickup head, an engaging portion, a spring placed between the fastening portion and the engaging portion for pressing the engaging portion to engage with the worm gear, and a connecting portion. The connecting portion is configured for connecting the fastening portion and the engaging portion and preventing the engaging portion from disengaging from the worm gear.

Abstract: According to one aspect, an optical read/write device for reading and/or writing an optical disc includes a base, optical pickup head, and a driving mechanism for slidably driving the optical pickup head. The driving mechanism includes a worm gear, a motor for rotating the worm gear, and a rack disposed between the worm gear and the optical pickup head for transferring motion from the worm gear to the optical pickup head. The rack includes a fastening portion for fixing the rack to the optical pickup head, a mesh portion for engaging with the worm gear, a restricting portion connected to the mesh portion for being blocked by the gear seat when the mesh portion is pressed by the worm gear to prevent the mesh portion from disengaging from the worm gear, and a connecting portion for connecting the fastening portion with the restricting portion.

Abstract: According to one aspect, an optical recording and/or reproducing device for reading and/or writing an optical disc includes a base, optical pickup head, and a moving mechanism for slidably moving the optical pickup head. The moving mechanism includes a worm gear, a motor for rotating the worm gear, and a rack disposed between the worm gear and the optical pickup head for transferring motion from the worm gear to the optical pickup head. The rack includes a fastening portion for fixing the rack to the optical pickup head, an engaging portion for engaging with the worm gear, a restricting portion connected to the engaging portion for preventing the engaging portion from running out of the worm gear, and a connecting portion for connecting the fastening portion with the restricting portion.

Abstract: A fastener including a body, multiple hooks, a pressing structure, and a connecting rod is provided. The body has a first end, a second end, and a through hole passing through from the first end to the second end. The hooks are provided in the first end, and the pressing structure is provided at the second end. The connecting rod is provided through the through hole. One end of the connecting rod is connected to the pressing structure and the other end thereof has an expansion portion. The hooks are suitable to insert in a hole of a plate when the expansion portion is provided outside the hooks. The hooks inserted in the hole are expanded outward to be fastened with the plate when the pressing structure drives the connecting rod to make the expanded portion move into the hooks. A heat dissipation module having the fastener is also provided.

Abstract: An apparatus and method for data capture with multi-threshold decision technique is disclosed. An apparatus for data capture with multi-threshold decision technique comprises a capture engine unit being operative to captures data from a video source, a buffer unit being operative to store the captured data by the capture engine unit, and a comparison unit being operative to compare the captured data stored in the buffer unit with a newly captured data outputted from the capture engine unit, wherein the comparison unit utilizes different thresholds to distinguish the difference degree between the captured data stored in the buffer unit and a newly captured data outputted from the capture engine unit so as to determine whether performing data update or not.

Abstract: A heat dissipation structure for processors to disperse heat from a plurality of processors located on a main board includes a fastening element and a heat dissipator. The fastening element has a plurality of engaging members located on the main board corresponding to the processors. The heat dissipator is made of fine heat conductor and includes a radiator, a plurality of engaging portions and a plurality of coupling portions. The engaging portions correspond to the fastening element. The coupling portions correspond to the processors. The engaging portions of the heat dissipator are coupled with the corresponding engaging members of the fastening element and the coupling portions are in contact with the corresponding processors.

Abstract: A computer network architecture for providing display data at a remote monitor is disclosed. The computer network architecture comprises a local computer, a local user interface controller, a remote user interface controller, and a remote monitor. The local user interface controller electrically connected to the local computer comprises a video compressor, a display timing capture controller, a DDC interface, and a network controller. The remote user interface controller be capable of communicating with the local user interface controller through a network comprises a network controller, a video decompressor, a display timing generator, and a DDC interface. The monitor electrically to the remote user interface controller is used for receiving the decompressed video signals, output signals generated by the display timing generator, and the data structure and displaying the decompressed video signals on the monitor.

Abstract: A graphic display control system is disclosed.

Abstract: A progressive differential motion JPEG codec is disclosed. The compression encoder of the progressive differential motion JPEG codec comprises a video capture unit, a video capture buffer, a detection unit, a compression unit, and a quality level buffer. The video capture unit is used for receiving an image data and dividing a component of the image data into a plurality of image data blocks. The video capture buffer stores the image data block. The detection unit is electrically coupled to the video capture unit and the video capture buffer for detecting whether a content of the image data block input from the video capture unit is different from a content of the image data block retrieved from the video capture buffer.

Abstract: A structure for isolating thermal interface material includes an isolating element and a heat dissipating element. The isolating element is hollow to encompass a heat generating element. With compression of the heat dissipating element on the heat generating element, thermal interface material between them is limited to flow within the closed room between the isolation element and heat generating element. The heat dissipating element further has a bump exactly contacting the heat generating element and a little smaller than the hollow portion of the isolating element. Therefore, the thermal interface material would not overflow while changing from solid phase to a gel or a liquid phase caused by raising temperature of the heat generating element, and the contamination or short circuits can be prevented.

Abstract: A computer graphics display system contains a graphics processing unit. A graphics processing unit extracts the display information needed for executing graphics display from system memory via the north bridge according to the graphics display command from the CPU and then processes the display information. The display information is stored directly in the system memory so that the graphics processing unit can directly access the system memory without the use of a graphics buffer. This lowers the system cost.

Abstract: A signal transmission device adapted to transmit an n-bit parallel digital signal is used for avoiding a transmission error. The device includes a detector for receiving a first and a second n-bit digital data consecutively occurred in the n-bit parallel digital signal, proceeding a first calculation to obtain a changed value, and outputting an indicating signal while the changed value is larger than a threshold, an encoder electrically connected to the detector for receiving the indicating signal and the second n-bit digital data, proceeding a second calculation, and outputting an encoded second n-bit digital data to reduce the changed value between the first n-bit digital data and the encoded second n-bit digital data below the threshold, and a decoder electrically connected to the detector and the encoder receiving the indicating signal and the encoded second n-bit digital data, proceeding a third calculation, and recovering the second n-bit digital data.

Abstract: A power saving method for computer graphics systems. First, a first time period from the start of a frame to the end of the frame is obtained. Next, the first time period is compared with a default frame time of the computer graphics system. Finally, the computer graphics system is disabled between the end of the first time period and the end of the default frame time when the first time period is shorter than the default frame time.

Abstract: A method and a computer system are provided for using a portion of a local memory of a graphics card as an extensive memory of a system memory. When the computer system is rebooted, a portion of a local memory of a graphics card is claimed as an extensive memory of the system memory, and the local memory excluding the extensive memory is claimed a new local memory by a driver of the graphics card. The driver of the graphics card reports the new local memory capacity to an operating system of the computer. Then, a new system memory capacity including the extensive memory and the original system memory is claimed by a chipset of the computer system and reported to a memory sizing command of BIOS. Finally, if a memory access request is within the address range of the extensive memory, the memory access request is transmitted to the graphics card through AGP/PCI bus.

Abstract: A signal transmission device adapted to transmit an n-bit parallel digital signal is used for avoiding a transmission error. The device includes a detector for receiving a first and a second n-bit digital data consecutively occurred in the n-bit parallel digital signal, proceeding a first calculation to obtain a changed value, and outputting an indicating signal while the changed value is larger than a threshold, an encoder electrically connected to the detector for receiving the indicating signal and the second n-bit digital data, proceeding a second calculation, and outputting an encoded second n-bit digital data to reduce the changed value between the first n-bit digital data and the encoded second n-bit digital data below the threshold, and a decoder electrically connected to the detector and the encoder receiving the indicating signal and the encoded second n-bit digital data, proceeding a third calculation, and recovering the second n-bit digital data.

Abstract: An apparatus of reducing power consumption of a single-ended Static Random Access Memory (hereinafter referred as SRAM) is provided. The apparatus consists of at least an extra column of status memory cell and a majority detector by which a bit status of a written data is detected and by which the value of the bit status is written into the extra column of status memory cell. The apparatus further includes a data scrambler by which the written data is converted into a storage data with a minority of 0 bits based on the value of bit status and by which the storage data is written into the main single-ended SRAM cell. The apparatus further includes a data de-scrambler by which the storage data in the main single-ended SRAM cell is converted into its original format based on the value of bit status stored in the extra column of memory cell and by which the data in its original format is output.

Abstract: An adaptive display memory management system for using idled display memory in a video graphics adapter card as extra system memory of a personal computer is presented. By means of hardware implementation, the memory management system manages the video display memory according to the video display mode and takes advantage of the idled display memory in forming virtual system memory for the computer, so that the working space of executing a user program is increased and the system performance of the computer is enhanced.

Abstract: A shared memory architecture of graphics frame buffer and hard disk cache is presented. The architecture includes a system bus interface, a hard disk controller, a graphics controller, an arbiter, a memory and a shared memory block. The shared memory block is divided into graphics frame buffer memory and hard disk controller cache memory. The arbiter determines the shared memory access priority between the graphics controller and the hard disk controller. By mean of hardware implementation, memories can be shared by the graphics controller and the disk controller. The complexity of the system is reduced and the system performance is enhanced. The overall system cost is decreased.

Abstract: A method for minimizing idle time of a controller in a graphics system, which includes a graphics memory and a graphics accelerating device that interconnects the controller and the graphics memory, is disclosed. The graphics accelerating device includes a command register for storing command signals from the controller therein, and a graphics engine for receiving and executing the command signals stored in the command register one at a time.