Abstract:
PROBLEM TO BE SOLVED: To provide techniques to seamlessly switch reception between multimedia programs and stream. SOLUTION: For continued decoding, a wireless device continues to receive, decode, decompress and display a current program, even after a new program has been selected, until overhead information needed to decode the new program is received. After receiving the overhead information, the wireless device decodes the new program but continues to decompress the current program. The wireless device decompresses the new program after decoding this program. For early decoding, the wireless device receives a user input and identifies a program with potential for user selection. The wireless device initiates decoding of the identified program, prior to the selection of the identified program, so that the identified program can be decompressed and displayed earlier if it is subsequently selected. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To seamlessly switch reception between multimedia programs. SOLUTION: In a first time interval, a first base stream including base information for a first program and a first enhancement stream including further information for the first program are decoded, and in a second time interval after the first time interval, the firs base stream for the first program and a second base stream for a second program are decoded. In a third time interval after the second time interval, the second base stream for the second program and a second enhancement stream are decoded. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for performing local transmission and wide area transmission in a wireless broadcast communication network. SOLUTION: In order to perform broadcast communications of transmission of different type having a hierarchy with different communication-possible range in a wireless broadcast communication network, each base station processes data for the wide area transmission according to a first mode (or coding scheme and modulation scheme) (S812), and processes data for the local transmission according to a second mode (S814). Based on each desired communication-possible range for the wide area transmission and the local transmission, each of the first mode and the second mode is selected. Each base station performs the broadcast communication on the local transmission and the wide area transmission as well as pilots related to them, based on different characteristics for a multi-frequency network and a single network. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus capable of seamlessly switching reception between multimedia programs. SOLUTION: In the reception of multimedia programs in a wireless communication system, a user input is received, a first program having the possibility of user selection is identified on the basis of the user input, and before the user selection of the first program, decoding of at least one portion of the first program is started. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for blackout, retune and roaming enforcement in a cellular network multimedia distribution system. SOLUTION: The method includes the acts of receiving a plurality of service regions in the cellular network multimedia distribution system; determining an affiliation of a client with one of the service regions in the plurality of service regions; and processing a service region specific message based on the affiliation. An apparatus, as well as a computer-readable medium having instructions stored thereon, the stored instructions, when executed by a processor, cause the processor to perform the method are also disclosed. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus capable of seamlessly switching reception between multimedia programs. SOLUTION: In transmitting multimedia programs in a wireless communication system, a video portion for a program to be started at first time is transmitted, further an audio portion of the program to be started at second time delayed from the first time by predetermined time is transmitted, and the video/audio portions are specified so as to be presented together in a receiving entity. The predetermined amount of delay corresponds to the difference of delays between video processing and audio processing in the receiving entity. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network. SOLUTION: Each base station processes data for a wide area transmission in accordance with a first mode (or coding scheme and modulation scheme) to generate data symbols for the wide area transmission and processes data for a local transmission in accordance with a second mode for the local transmission. The first and second modes are based on the coverage of for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide area transmissions. The data, pilots, and overhead information for local and wide area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To multiplex multiple data streams in a multi-carrier communication system. SOLUTION: Disoverlapped interlaces are formed with U usable subbands. Each interlace is a different set of S subbands, and the subbands for each interlace are interlaced with the subbands for each of the other interlaces. M slots may be defined for each symbol period and assigned slot indices 1 through M. The slot indices may be mapped to interlaces such that (1) frequency diversity is achieved for each slot index and (2) the interlaces used for pilot transmission have varying distances to the interlaces used for each slot index. Each data stream may be processed as data packets of a fixed size, and different numbers of slots may be used depending on the coding and modulation scheme used for the data packet. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To enable a wireless communications device to rapidly acquire media logical channels and access any information (e.g., a decryption key) required to receive the service.SOLUTION: A wireless broadcast system includes a transmitter for broadcasting to a wireless communications device. The transmitter receives a plurality of streams on a logical channel, in which one of the streams contains signaling. The transmitter arranges the streams such that the stream containing the signaling is broadcasted after the other streams on the logical channel. The wireless communications device receives the streams broadcasted on a logical channel broadcasted in a frame, and acquires the logical channel during the broadcast of the frame in response to a prompt received during the broadcast of the same frame.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for performing local transmission and wide area transmission in a wireless broadcast communication network. SOLUTION: In order to perform broadcast communications of transmission of different type having a hierarchy with different communication-possible range in a wireless broadcast communication network, each base station processes data for the wide area transmission according to a first mode (or coding scheme and modulation scheme) (S812), and processes data for the local transmission according to a second mode (S813). Based on each desired communication-possible range for the wide area transmission and the local transmission, each of the first mode and the second mode is selected. In the same way, each base station multiplexes the data for the local transmission with the data for the wide area transmission without overlapping partially, and carries out broadcast communication for the multiplexed data. COPYRIGHT: (C)2011,JPO&INPIT