摘要:
The present invention relates to a communication system architecture which can perform integrated processing of different network protocols and multimedia traffics. The communication system for integrated processing of different network protocols and multimedia traffics comprises a common packet; a common packet switch; a plurality of channels; a common bus; a common protocol platform; an external network protocol converter; and an internal network protocol converter. Thus, the present invention can process traffics rapidly embodied by mean of hardware, and easily perform various QoS, traffic control, and so on by designing a unified common platform with an open architecture. In addition, the present invention can be used for digital consumer devices in building networks and home networks or various digital appliances classified as Internet information appliances, and for control systems such as a home gateway, a home server, an STB, a home station and so on.
摘要:
The present invention provides common protocol architecture and methods for transmitting data between different network protocols and a common protocol packet. The common protocol architecture comprises an application layer; a common protocol layer positioned under the application layer, the common protocol layer enabling data communications between the different protocols; a presentation layer positioned under the common protocol layer; a session layer positioned under the presentation layer; a transport layer positioned under the session layer; a network layer positioned under the transport layer; a data link layer positioned under the network layer; and a physical layer positioned under the data link layer. The common protocol packet comprises a common protocol header with information about a packet and a payload with the contents of data. By designing the common protocol layer and the common protocol packet accepting various protocols simultaneously, the present invention can improve compatibility between different protocols.
摘要:
The present invention provides common protocol architecture and methods for transmitting data between different network protocols and a common protocol packet. The common protocol architecture comprises an application layer; a common protocol layer positioned under the application layer, the common protocol layer enabling data communications between the different protocols; a presentation layer positioned under the common protocol layer; a session layer positioned under the presentation layer; a transport layer positioned under the session layer; a network layer positioned under the transport layer; a data link layer positioned under the network layer; and a physical layer positioned under the data link layer. The common protocol packet comprises a common protocol header with information about a packet and a payload with the contents of data. By designing the common protocol layer and the common protocol packet accepting various. protocols simultaneously, the present invention can improve compatibility between different protocols.
摘要:
An address generating and mapping device of a video capture system includes: a microprocessor having a counter counted by being synchronized with a horizontal synchronizing signal of a video signal, an address port for outputting an address to be used when reading from a memory, and a counter port for outputting the counter value and a bank selection signal by using predetermined higher bits among the counter output as the bank selection signal for selecting data banks of the memory; a counter for performing a predetermined operation according to a signal for selecting a mode, when a mode for generating an address necessary for storing the video signal is referred to as an address generating mode and a mode for mapping an address necessary for accessing the memory is referred to as an address mapping mode; multiplexers for outputting a counter value from the microprocessor to higher addresses of the memory when the mode selection signal is the address generating mode and outputting the addresses output from the microprocessor as higher addresses of the memory when the mode selection signal is the address mapping mode, and a bank selecting unit for outputting higher bits among the signals output from the counter built in the microprocessor as a signal for selecting the data banks of the memory when the mode selection signal is the address mapping mode. In the address generating mode, the counter counts the number corresponding to that of pixels constituting a horizontal line of the video signal to output as lower addresses of the memory and is cleared by a clear signal having the same frequency as that of the horizontal synchronizing signal of the video signal, and, in the address mapping mode, the counter connects address lines output from the microprocessor to lower address lines of the memory. The use of the mode selection signal can provide a simple address generating and mapping circuit for the video capture system.
摘要:
A constant amplitude coded bi-orthogonal demodulator demodulates the received constant amplitude bi-orthogonal modulated data, cancels the parity bits to generate the serial data, detects the occurrence of an error by dividing the demodulated data into a plurality of groups of data, outputs the serial data as demodulated data if an error does not occur, sequentially converts bit polarities of data of groups in which an error occurs if the error detector detects the error, compares distances between the received bi-orthogonal modulated data and the constant amplitude coded bi-orthogonal modulated data, and selects, as demodulated data, data of which corresponding bit polarities are changed according to the comparison results.According to the present invention, power consumption is reduced, a power amplifier can be manufactured at an inexpensive cost, interference robustness can be ensured, and data can be transmitted at a high transmission rate and a variable transmission rate.