Abstract: The present invention relates to a method and an apparatus for selectively controlling one or more display devices among a plurality of video display devices constituting a multivision by using a remote controller; a video display device; and a multivision system. The method for controlling the video display device in accordance with a present invention includes the steps of: displaying a predetermined access code when control data for canceling an OSD locking function is received from the outside; receiving control data including an access code from the outside; and entering a control mode using an OSD menu if the access code contained in the received control data is equal to the predetermined access code.

Abstract: This invention is concerned with a transmission control method and apparatus in a collision interval for a collision of multidimensional hopping patterns. In the present invention, each orthogonal wireless resource in the coordinate of the multidimensional orthogonal resource can hop according to the hopping pattern negotiated between a transmitter and a receiver, and each corresponding channel is distinguished by the hopping pattern. A specific multidimensional hopping pattern is allocated to each secondary station. The hopping pattern is either permanently allocated to the secondary stations or temporarily allocated from the primary station during a call set-up. The permanent allocation of the hopping pattern to the secondary stations is achieved when the hopping pattern is identified based on a unique identifier, such as ESN of the secondary station.

Abstract: A method and system for statistically multiplexing corresponding channels using an orthogonal code hopping in a wire/wireless communication system, including a first communication station and multiple second communication stations, in which multiple synchronized communication channels coexist through one media. The system includes an orthogonal code hopping pattern generator, a spreader for selecting a corresponding orthogonal code symbol in the orthogonal code, a collision comparator and controller for monitoring whether the orthogonal code symbols collide and for determining whether the send data symbols to the second communication stations coincide in the collision area, a unit for stopping transmission in case of collision of the hopping patterns and discordance of the transmission data symbols, and a transmission power controller for compensating an average receiving energy loss.

Abstract: The present invention is related to a method and an apparatus for the orthogonal complex-domain spreading modulation in CDMA spread spectrum communication system when there are channels with statistically higher transmitting power. In CDMA spread spectrum communication systems with a transmitter and a receiver, the transmitter according to the invention has several channels with different information. Two channels with higher power than the others, which are spread in the conventional scheme, are spread with the orthogonal codes using a complex-domain multiplier. The spread signals are added. Then the signals are scrambled using a complex-domain multiplier with secondary scrambling sequences generated by a special scrambling code generator with primary scrambling sequences as inputs. The receiver does reverse operation of the transmitter.

Abstract: The present invention is related to a statistical multiplexing method and apparatus using a multi-dimensional orthogonal resource hopping multiplexing method in a wired/wireless communication systems where a plurality of communication channels, which are synchronized through a single medium, coexist.

Abstract: A transmitter simultaneously performs channel coding and rate matching in a CDMA mobile communication system. The transmitter encoders input bits into coded bits at a given mother code rate, and performs puncturing on the coded bits in order to match the number of coded bits to a predetermined code rate. Thereafter, the transmitter simultaneously performs rate matching for repeating or puncturing the coded bits in order to match the number of coded bits to the number of bits transmitted over a radio channel.

Abstract: This invention is concerned with a transmission control method and apparatus in a collision interval for a collision of multidimensional hopping patterns. In the present invention, each orthogonal wireless resource in the coordinate of the multidimensional orthogonal resource can hop according to the hopping pattern negotiated between a transmitter and a receiver, and each corresponding channel is distinguished by the hopping pattern. A specific multidimensional hopping pattern is allocated to each secondary station. The hopping pattern is either permanently allocated to the secondary stations or temporarily allocated from the primary station during a call set-up. The permanent allocation of the hopping pattern to the secondary stations is achieved when the hopping pattern is identified based on a unique identifier, such as ESN of the secondary station.

Abstract: A method and apparatus can diagnose a cell defect of a PDP module. The method can include dividing a screen of a PDP module into a plurality of regions, displaying a pattern for diagnosing the cell defect on less than all the regions, and blocking at least one of the remaining regions. Further, determined cell defects identified in at least two of the plurality of regions have different weights when combined to determine a resulting value for comparison to a threshold for the PDP module.

Abstract: A base station device for a CDMA communication system includes a controller for changing a reference value for reverse closed loop power control in a control hold state, and a forward dedicated control channel transmitter for transmitting a power control bit for controlling transmission power of a reverse link according to the changed reference value.

Abstract: A mobile station device and method which includes a preamble generator for generating a preamble signal intermittently to be transmitted during a preamble interval prior to a transmission interval of a reverse access channel message; and a transmitter for spreading and modulating the preamble signal received from the preamble generator and transmitting it to a base station.

Abstract: A method and apparatus for multiplexing a first channel and a second channel having different Transmission Time Intervals (TTIs) for a first service and a second service and transmitting a plurality of symbols in a mobile communication system providing the first service and the second service. Some of the features include performing coding on the first service and the second service based on TTIs for corresponding services; performing interleaving based on TTIs of the respective services; sequentially transmitting the channel-interleaved symbols for the first service and the channel-interleaved symbols for the second service, considering the number of symbols to be transmitted through one frame; and multiplexing the first channel for the first service and the second channel for the second service on a unit frame basis.

Abstract: A base station device for a CDMA communication system includes a controller for changing a reference value for reverse closed loop power control in a control hold state, and a forward dedicated control channel transmitter for transmitting a power control bit for controlling transmission power of a reverse link according to the changed reference value.

Abstract: A method and apparatus can diagnose a cell defect of a PDP module. The method can include dividing a screen of a PDP module into a plurality of regions, displaying a pattern for diagnosing the cell defect on less than all the regions, and blocking at least one of the remaining regions. Further, determined cell defects identified in at least two of the plurality of regions have different weights when combined to determine a resulting value for comparison to a threshold for the PDP module.

Abstract: A receiving device for a mobile station receives signals transmitted from a base station having a time-switched transmission diversity (TSTD) function. In the receiving device, a despreader despreads channel signals which have been transmitted in a TSTD mode of operation. A pilot separator separates a pilot signal from the despread channel signals. A channel estimator generates a channel estimation signal by selecting pilot signals transmitted from a same antenna of a transmitter according to a TSTD pattern of the transmitter. A compensator compensates the channel signals with the channel estimation signal.

Abstract: A handoff implementing device and method in a mobile communication system. The handoff implementing device including a base station transmitter and a mobile station receiver. The base station transmitter divides a given frame period into a transmission period and a non-transmission period, separates frame data in the frame period into first and second data, spreads the first and second data by different orthogonal codes, and transmits the spread signal in the transmission period. The mobile station receiver receives the first and second data spread by the different orthogonal codes in the transmission period, assembles the first and second data into the frame data, and searches for an adjacent base station to which a call is handed off in the non-transmission period.

Abstract: An orthogonal code hopping multiple access communication system divides channels according to hopping patterns of the orthogonal codes allotted to the respective channels. The communication system includes a transmitter for modulating input digital signals using an orthogonal code hopping multiple access technique and transmitting the modulated digital signals, and a receiver for receiving the digital signals using the orthogonal code hopping multiple access technique and restoring the digital signals.

Abstract: A transmitter simultaneously performs channel coding and rate matching in a CDMA mobile communication system. The transmitter encoders input bits into coded bits at a given mother code rate, and performs puncturing on the coded bits in order to match the number of coded bits to a predetermined code rate. Thereafter, the transmitter simultaneously performs rate matching for repeating or puncturing the coded bits in order to match the number of coded bits to the number of bits transmitted over a radio channel.

Abstract: A method for performing a handoff when a mobile station receiving a transmission diversity signal travels from a first base station transmitting a signal in a transmission diversity mode of operation to a second base station transmitting a signal in the transmission diversity mode of operation. In the method, the mobile station communicates with the first base station in the transmission diversity mode of operation. Prior to performing handoff, the mobile station communicates with the first base station in a non-transmission diversity mode of operation. During the handoff, the mobile station communicates with the first and second base stations in the non-transmission diversity mode of operation. Upon completing the handoff, the mobile station communicates with the second base station in the non-transmission diversity mode of operation. After a predetermined time, the mobile station communicates with the second base station in the transmission diversity mode of operation.

Abstract: A PN sequence identifying device in a receiver in an asynchronous CDMA communication system. The receiver receives first OGCs on a primary sync channel and second OGCs on a secondary sync channel synchronized with the primary sync channel symbol by symbol. In the PN sequence identifying device, a first OGC detector detects the first OGCs and obtains a first symbol energy. A first synchronizer receives the first symbol energy, synchronizes chips, symbols, and slots, and outputs a first sync signal. A second OGC detector, upon reception of the first sync signal, detects the second OGCs each time the first sync signal is received, and obtains second symbol energies in base station identifying group units. A hopping pattern generator compares the first symbol energy with the second symbol energies, determines whether null signs are in the second OGCs, determines the order of the null signs if the null signs are present, and generates a hopping pattern of the second OGCs.

Abstract: An apparatus and method for multiplexing/demultiplexing transport channels in an HSDPA (High Speed Downlink Packet Access) communication system. Upon generation of transport blocks to be transmitted to a UE (User Equipment), the transport blocks are concatenated to a transport block set. The transport block set is segmented into a plurality of code blocks according to the number of bits in the transport block set. The code blocks each are attached with CRC (Cyclic Redundancy Check) bits and mapped to transport channels.