摘要:
A decoder for a video signal encoded according to the MPEG-2 standard includes a single high-bandwidth memory and a digital phase-locked loop. This memory has a single memory port. The memory is used to hold 1) the input bit-stream, 2) first and second reference frames used for motion compensated processing, and 3) image data representing a field that is currently being decoded. The decoder includes circuitry which stores and fetches the bit-stream data, fetches the reference frame data, stores the image data for the field that is currently being decoded in block format and fetches this image data for conversion to raster-scan format. All of these memory access operations are time division multiplexed and use the single memory port. The digital phase locked loop (DPLL) counts pulses of a 27 MHz system clock signal, defined in the MPEG-2 standard, to generate a count value. The count value is compared to a succession of externally supplied system clock reference (SCR) values to generate a phase difference signal that is used to adjust the frequency of the signal produced by the DPLL. In addition, the DPLL is aligned in phase by substituting respective portions of the SCR value for the count value developed by the DPLL and for the accumulated phase value used by the DPLL.
摘要:
A system and method for filtering a digital signal having a relatively high data rate uses circuitry which operates at a lower data rate. The filter includes an input section which receives the input signal and which divides the input signal into a plurality of contiguous segments. The system also includes a first filter which receives samples representing one of the plurality of segments and adjacent samples from the next contiguous one of the segments and which filters all of the received samples to produce a first filtered signal. A second filter receives samples of the next contiguous segment and filters those samples to produce a second filtered signal. The filtered signals are combined by providing the samples of the second filtered signal immediately after the samples of the first filtered signal to produce a filtered output signal. The invention also relates to using respective timing signals associated with the segments to determine when the samples of the first and second filtered signals are provided.
摘要:
A parallel decoder for an MPEG-2 encoded video signal includes a deformatter which separates the input bit stream into multiple portions, each representing a respectively different section of the HDTV image. The separate portions are processed in parallel by respective decoders. In order to perform motion compensated processing, each of the four decoders includes a memory that holds data representing the entire image. Each decoder provides its decoded output data to all of the decoders to maintain the data in the respective memories.
摘要:
A method for producing nickel nanoparticles is described, including a first step of heating a mixture of a nickel carboxylate with 1-12 carbon atoms in its moiety excluding —COOH and a primary amine to obtain a complexed reaction solution with a nickel complex foiiiied therein, and a second step of heating the complexed reaction solution by a microwave to obtain a Ni-nanoparticle slurry. In the first step, the heating is preferably conducted at a temperature of 105-175° C. for 15 minutes or longer. In the second step, the heating is preferably conducted at a temperature of 180° C. or higher.
摘要:
A display device including: a display portion for displaying a video; a generator for generating a synchronization signal including a command signal synchronized with display of frame images of the video; and a transmitter for transmitting the synchronization signal, wherein the command signal including a predetermined member of pulse signals has a leading pulse signal for notifying a start of the command signal, a terminal pulse signal for notifying an end of the command signal, and a control pulse signal for notifying a content of synchronization control synchronized with the display of the frame images.
摘要:
A method for predicting motion compensation for determining of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a first set time, and the method includes calculating a motion vector of the input image based on a move, at a second set time, of a block unit which is a part of the input image and consists of a plurality of pixels, and calculating a motion vector of the reference image based on a move, at the first set time, of a block unit which is a part of the reference image and consists of a plurality of pixels. Move compensation of the input image is calculated both from the motion vector of the input image and from the motion vector of the reference image, to thereby realize a method for determining motion compensation with high precision.
摘要:
A method for predicting motion compensation for determining of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a first set time, and the method includes calculating a motion vector of the input image based on a move, at a second set time, of a block unit which is a part of the input image and consists of a plurality of pixels, and calculating a motion vector of the reference image based on a move, at the first set time, of a block unit which is a part of the reference image and consists of a plurality of pixels. Move compensation of the input image is calculated both from the motion vector of the input image and from the motion vector of the reference image, to thereby realize a method for determining motion compensation with high precision.
摘要:
A resource manager allocates operation requests to security network devices according to device characteristics. The devices collect and/or manage data from an environment. The devices may include a camera, a multimedia recorder, an analyzer, and a meta-data server. One or more users submit operation requests to a controller. The controller allocates the network devices to the operation requests according to the device characteristics. The device characteristics include availability of the device, media flow data of the device, location of the device, and capabilities of the device.
摘要:
A method for predicting motion compensation for determining of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a first set time, and the method includes calculating a motion vector of the input image based on a move, at a second set time, of a block unit which is a part of the input image and consists of a plurality of pixels, and calculating a motion vector of the reference image based on a move, at the first set time, of a block unit which is a part of the reference image and consists of a plurality of pixels. Move compensation of the input image is calculated both from the motion vector of the input image and from the motion vector of the reference image, to thereby realize a method for determining motion compensation with high precision.
摘要:
A variable length decoder for decoding a variable length code. The variable length decoder includes a code length look-up table which receives n-j bits of an n-bit fixed-length word. A segment of the variable length code value is held in the n-j bits where n and j are integers and j is less than or equal to n. The code length look-up table produces a decoded code length value. The variable length decoder includes a code value look-up table which receives the n-bit fixed-length word and produces a decoded code value of the variable length code.