Abstract: An image recognition system for detecting and tracking at least an image portion associated with a predefined object from a moving picture is configured to be able to perform: an object detection processing step of detecting the object; a tracking point specification processing step of specifying a predetermined point as a tracking point; a tracking target recognition processing step of recognizing an actual tracking target based on the tracking point; a tracking processing step of tracking the tracking target; and a determination processing step of determining the type of the tracking target's behavior. The tracking point specification processing step and the determination processing step are implemented by software, while the object detection processing step, the tracking target recognition processing step, and the tracking processing step are implemented by hardware.

Abstract: An image recognition system for detecting and tracking at least an image portion associated with a predefined object from a moving picture is configured to be able to perform: an object detection processing step of detecting the object; a tracking point specification processing step of specifying a predetermined point as a tracking point; a tracking target recognition processing step of recognizing an actual tracking target based on the tracking point; a tracking processing step of tracking the tracking target; and a determination processing step of determining the type of the tracking target's behavior. The tracking point specification processing step and the determination processing step are implemented by software, while the object detection processing step, the tracking target recognition processing step, and the tracking processing step are implemented by hardware.

Abstract: Provided is a decoding device which can perform video decoding in a real time with a sophisticated video specification requiring a frequent access to an external memory. A video decoding device (100) includes a hardware video decoder (115) which executes decoding of a pixel coefficient and write of a reconfigured picture into an external memory (110). A hardware video decoder (115) includes: a hardware engine pipeline (201) formed by a plurality of hardware engines requiring a DMA read access or a DMA write access to the external memory (110) or both of the accesses; and a hardware video decoder DMA controller (200) which adjusts all the DMA accesses from the hardware engines to one DMA channel or a plurality of DMA channels to a DMA controller (111).

Abstract: Provided is a video encoding and decoding device which can use limited memory resources to maximize system performance. After a direct memory access means (160) of a motion-compensation device (101) generates a DMA request after an interpolation complete was received from an interpolation means (180), and a DMA ACK was received from a memory access arbitration means (110), a video encoding and decoding device (100) receives a plurality of DMA input data in accordance with the maximum DMA burst constraint and the block buffer size constraint, and generates the block memory address for storing the reference pixel data in a variable size block buffer (170) in accordance with the decoding parameters, the calculation process level Lc, the maximum DMA burst constraint, and the block buffer size constraint.

Abstract: An image processing apparatus (10) capable of reducing the bandwidth and capacity required for a frame memory and preventing image quality degradation includes: a selecting unit (14) that selectively switches between first and second processing modes, a frame memory (12); a storing unit (11) that (i) down-samples an input image by deleting predetermined frequency information included in the input image and stores the input image as a down-sampled image in the frame memory (12) when the switching unit switches to the first processing mode, and (ii) stores the input image without down-sampling in the frame memory (12) when the switching unit switches to the second processing mode; and a reading unit (13) that (i) reads out the down-sampled image from the frame memory (12) and up-samples the down-sampled image when the switching unit switches to the first processing mode, and (ii) reads out the input image without down-sampling from the frame memory (12) when the switching unit switches to the second processing

Abstract: The present invention discloses a method of message transmission performed in a server; a method of message transmission performed in a client; a symbol-based method for transmitting a message between a server and at least one client as well as a server; a client and a symbol-based message transmission system, wherein the symbol-based method of message transmission has: at least one client requesting the server to perform message transmission; the server transmitting symbols of the client's message to the client; and presenting the received message symbols on the client. The symbol-based method of message transmission saves a great deal of bandwidth of the communication channel by having the server only transmit symbols that represent the message after receiving a message transmission request from the client. This is done in order to efficiently transmit a message with a large body and/or attachment(s), thereby avoiding the risk of blocking the communication channel.

Abstract: The present invention discloses a method of message transmission performed in a server; a method of message transmission performed in a client; a symbol-based method for transmitting a message between a server and at least one client as well as a server; a client and a symbol-based message transmission system, wherein the symbol-based method of message transmission has: at least one client requesting the server to perform message transmission; the server transmitting symbols of the client's message to the client; and presenting the received message symbols on the client. The symbol-based method of message transmission saves a great deal of bandwidth of the communication channel by having the server only transmit symbols that represent the message after receiving a message transmission request from the client. This is done in order to efficiently transmit a message with a large body and/or attachment(s), thereby avoiding the risk of blocking the communication channel.

Abstract: The efficient motion compensation apparatus for digital video format down-conversion with variable conversion ratio is disclosed. The apparatus is characterized by an interpolation and decimation filters derived using a number of orthogonal transforms with variable transform sizes and implemented using efficient computation architectures. The computation architecture comprises the orthogonal transform kernel selection means, frequency component computing means, coefficient weighting means and pixel reconstruction means. A simple architecture for both interpolation and decimation filtering processes has been invented. The result is the dramatic reduction of the shifting and adding/subtracting operations, making them suitable for implementation in LSI realization of the video format down-conversion of digital video systems.

Abstract: The invention described herein is an efficient motion compensation apparatus for digital video format down-conversion. This apparatus is characterized by an interpolation and decimation filters implemented using efficient computation architectures. The computation architecture comprises the frequency component computing section, coefficient weighting section and pixel reconstruction section. A simple architecture for both interpolation and decimation filtering processes has been invented. The result is the dramatic reduction of the shifting and adding or subtracting operations, making them suitable for implementation in LSI realization of the video format down-conversion of digital video systems.

Abstract: A method and an apparatus for measuring the instantaneous frequency of FM modulated signals, includes sampling, instantaneous frequency computing, and lowpass filtering. FM modulated signal are sampled at prescribed intervals to provide digitized FM signal. The instantaneous frequency is computed by manipulating the digitized FM signal mathematically using a new mathematical equation proposed in this invention to provide the instantaneous frequency based on digitized FM signal samples. More accurate instantaneous frequency values can be obtained by filtering the computed instantaneous frequency values using a lowpass filter.

Abstract: A method and an apparatus for measuring the instantaneous frequency of FM modulated signals, comprises a sampling means, an instantaneous frequency computing means and a lowpass filtering means. The sampling means samples FM modulated signal at prescribed intervals to provide digitized FM signal. The instantaneous frequency computing means manipulates the digitized FM signal mathematically using a new mathematical equation proposed in this invention to provide the instantaneous frequency based on digitized FM signal samples. More accurate instantaneous frequency values can be obtained by filtering the computed instantaneous frequency values using a lowpass filter.

Abstract: A method and an apparatus for measuring the instantaneous frequency of FM modulated signals, includes sampling, instantaneous frequency computing, and lowpass filtering. FM modulated signal are sampled at prescribed intervals to provide digitized FM signal. The instantaneous frequency is computed by manipulating the digitized FM signal mathematically using a new mathematical equation proposed in this invention to provide the instantaneous frequency based on digitized FM signal samples. More accurate instantaneous frequency values can be obtained by filtering the computed instantaneous frequency values using a lowpass filter.