摘要:
An object-based coding apparatus and method for image signals, wherein upon scanning shape-adaptive transform coefficients of an input image signal transformed in accordance with a shape-adaptive transform, only segments containing such shape-adaptive transform coefficients are scanned. In the scanning operation, segments containing no transform coefficient are skipped, thereby reducing the quantity of data being encoded. An apparatus for and a method of object-based decoding of image signals are also disclosed which can decode bit streams generated using the coding method, thereby reproducing image signals.
摘要:
A novel CMOS image unit pixel layout having a photodiode including an optically optimized square image sensing region. The square image sensing layout provides for reduced electrical and color crosstalk and improved modulation transfer function (MTF) between neighboring pixels of an array of pixels.
摘要:
An area array type semiconductor package includes a plurality of conductive media such as solder bumps or solder balls, attached to respective bond pads of a chip. The conductive media act as external output terminals. The chip is attached to a lead frame by a thermal conductive adhesive, and a predetermined area of the lead frame and the semiconductor chip are packaged with a molding resin. Leads of the lead frame are then trimmed and formed so that the lead frame, to which the semiconductor chip is adhered, acts as a heat sink. This allows the package to be used for a high-powered semiconductor device which radiates a high temperature heat. Also, because conductive media such as solder bumps or solder balls can be used to directly connect bond pads of the chip to conductive regions of a circuit board, a size of the semiconductor package can be minimized, the arrangement of the bonding pads on the chip can be easily planned, and electrical characteristics of the semiconductor package can be improved.
摘要:
A semiconductor device and fabrication method thereof restrains an amplified current between input voltage Vin and ground voltage Vss, and first and second n-wells are biased into internal voltage sources, whereby the current-voltage characteristic of the input pad becomes stabilized during an open/short checkup of a semiconductor device. The semiconductor device includes a semiconductor substrate having a plurality of device isolation regions, first and second n-wells horizontally spaced from either of the plurality of device isolation regions, a p-channel transistor formed in the second n-well, an input protection transistor horizontally spaced from the first n-well and the device isolation region, on a symmetrical portion by the first n-well to the second n-well, and a guard ring formed between the first n-well and the input protection transistor.
摘要:
A method and apparatus for updating motion vector memories used for prediction of motion vectors in a video compression coding/decoding method and system. For a frame composed of N macroblocks in the horizontal direction, only (2N+1) motion vector memories are used to store all motion vectors necessary to motion prediction, and only three memories per macroblock are used to update motion vectors, thereby reducing the size of a circuitry, the amount of computation and the amount of power consumed.
摘要:
A transistor and a method for fabricating the same that involves a forming a device isolation oxide film semiconductor substrate, forming an opening in the device isolation oxide to open the substrate and define an active region, the junction between the oxide and the substrate having a rounded profile, and then forming a complex gate electrode structure in the active region. The preferred gate electrode structure comprises a gate oxide and a stacked conductor structure having a first and a second conductor, an optional hard mask layer formed on the second conductor, an oxide layer formed on the first conductor, and nitride spacers formed on the oxide layer on the sidewalls of the gate electrode. On either side of the gate electrode structure lightly doped drain (LDD) regions and source drain regions are then formed in the active region of the semiconductor substrate. The wafer is then planarized with one or more insulating films to condition the wafer for subsequent processing.
摘要:
A semiconductor device and method of manufacturing the semiconductor device including a semiconductor substrate of a first conductivity type. A scribe lane area formed in the substrate to define chip formation areas. A deep well area formed in each chip formation area. The deep well area has a second conductivity type which is opposite the first conductivity type. Also, at least one well area is formed within the deep well area.
摘要:
A ferroelectric memory device, e.g., nonvolatile, has an effective layout by eliminating a separate cell plate line. The ferroelectric memory device includes first and second split word lines formed over first and second active regions of a semiconductor substrate, and the first and second active regions are isolated from each other. Source and drain regions are formed in the first active region on both sides of the first split word line and the second active region on both sides of the second split word line. A conductive barrier layer, a first capacitor electrode and a ferroelectric layer are sequentially formed on the first and second split word lines. Two second capacitor electrodes with one connected to one of the source and drain regions of the second active region is formed over the first split word line. The other one is connected to one of the source and drain regions of the first active region and is formed over the second split word line. First and second bit lines are respectively connected to the other one of the source and drain regions of the first active region, and the other one of the source and drain regions of the second active region.
摘要:
A rate control apparatus for real-time video communication includes: an initialization unit for setting an initial value required for rate control according to a transmission speed and the number of input frames; a target bit calculation unit for obtaining the target number of encoding bits, maximum allowable number of bits, and minimum allowable number of bits in consideration of a buffer state and a transmission speed; a rate control and encoder unit for executing rate control and encoding using the maximum allowable number of bits and the minimum allowable number of bits; a stuffing control unit for comparing the size of a bit stream from the rate control and encoding unit with the target number of encoding bits from the target bit calculation unit for thereby outputting stuffing bits; a buffering unit for storing a combination of the bit stream from the rate control encoding unit and the stuffing bits from the stuffing control unit for thereby outputting them to the target bit calculation unit; a frame skip unit for outputting a frame skip signal according to the buffer occupied state signal from the buffering unit; and a control logic unit for controlling an encoding process of each of the above elements and determining whether or not the next input frame is encoded according to the frame skip signal from the frame skip unit.
摘要:
A capacitor and a method of manufacturing the same are disclosed. The BST dielectric film is disposed between the lower electrode by coating a sidewall of the upper electrode and then forming the lower electrode in a second contact hole defined by the upper electrode and BST film. As such, degradation in the step coverage characteristic caused by forming a BST dielectric film having a desired composition ratio is avoided.