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WO/2008/110992A1 |
What is described is a circuit arrangement and a method for synchronizing the communication signals between a repeater station (S) of a single-frequency simulcast radio communication network (N) and user terminals (T) with respect to a u...
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WO2008042694A9 |
A system and method of synchronizing transmissions in a simulcast system by continuously adjusting the signal transmission delay. Timing information that includes a GPS timestamp is continuously generated at a source site, encoded into a...
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WO/2008/058149A2 |
A method for a wireless communication system includes broadcasting that a first service is available in a first MBSFN and a second service is available in a second MBSFN. The method includes supporting a service not broadcasted as availa...
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WO/2008/047441A1 |
A mobile receiver having significantly improved reception sensitivity to secure excellent reception quality even if receiving a broadcast while moving in a single frequency network in which differently polarized radio waves are sent out ...
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WO/2008/040808A1 |
A wireless serving communication unit comprises a signal processor, for receiving and processing a signal to be broadcast, and a number of transmitters operably coupled to the signal processor, for transmitting the broadcast signal in a ...
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WO/2008/000130A1 |
A method and system for realizing multicast service of multimedia broadcast. The multicast service of multimedia broadcast is loading on the different multicast of multimedia broadcast loads. Each of the multicast load of multimedia broa...
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WO/2007/134486A1 |
A synergetic transmitting system for digital broadcast SFN and method thereof are disclosed. The synergetic transmitting system includes a double layer synergetic transmitting structure having the same frequency, which includes: a main t...
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WO/2007/115626A1 |
According to the invention, a digital data stream (TS) is first generated in a master station (Z) in the form of periodic data frames and is fed to the individual high-frequency transmitters (S1 to SX) of a synchronized network in order ...
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WO/2007/063890A1 |
A signal processing device for creating as natural a display video as possible with as high a quality as possible from the received signal of digital broadcast provided by simulcast. The signal processing device comprises a first decoder...
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WO/2007/051478A1 |
Disclosed is a method for radio broadcasting a plurality of different information offers in a terrestrial mutual broadcasting system (1) on a common channel with radio broadcast signals in a time slot process. According to said method, a...
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WO/2007/036485A2 |
The invention concerns a method for broadcasting data in a broadcasting network comprising at least two different transmitters, said data being organized in frames of successive data constructed from a first external timing reference sig...
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WO/2007/028459A1 |
An apparatus for the transmission of radio waves in isofrequency, particularly for FM radio broadcasts, fit to be employed on two or more broadcasting equipments suitably positioned on the territory in such a way to create one or more si...
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WO/2006/046107A1 |
A single frequency network (SFN) system is provided, where the system includes a head-end and a plurality of transmitters. The head-end is capable of calculating timing information based upon a time reference having a second resolution. ...
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WO/2005/117433A1 |
Provided is a frequency synchronizing apparatus and method that can synchronize frequencies between receiving signals and transmitting signals by extracting a carrier error and sampling timing error information in a synchronization proce...
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WO/2005/036763A1 |
This patent describes a method which allows multiple DAB transmission signals to be modulated, up-converted, filtered and combined prior to a High Power Amplifier (HPA), thus reducing the multiple up-conversion and HPA to a single unit a...
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WO/1999/038283A1 |
A method and system for distributing subscriber services to a number of user locations in a broadband cellular network (100). A bidirectional antenna array located at a number of cell centers (200, 202, 204) provides coverage over a wide...
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WO/1996/036135A1 |
A message system (500) for transmitting a message to a subscriber unit (312). The messaging system (500) includes a plurality of geographically distributed messaging transmitters (302-310), each transmitter designed to transmit in a firs...
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WO/1996/028910A1 |
Within a desired service area, multiple transmitters (TX) at separately located sites simultaneously broadcast the same multi-channel, multi-program signal. Each such channel carries a multiplexed digital data stream containing packets o...
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WO/1995/024780A1 |
A digital signal is transmitted in a coded orthogonal frequency division multiplex (COFDM) signal as a series of time frames. Each frame comprises a plurality of time domain symbols derived from the orthogonal frequency domain multiplex ...
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WO/1995/020276A1 |
The invention describes a process for finding the receivability of radio signals in a radio system and a receiver for performing the steps required on the reception side. The invention is particularly significant for a radio system, espe...
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WO/1994/007314A1 |
A digital broadcast transmission system comprises a plurality of spaced transmitters (6). Each transmitter (6) receives signals for transmission from a master transmitter (2) along with a reference frequency (F ref). The reference freque...
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JP4709924B2 |
The arrangement has high frequency transmitters (S1-SX) provided with digital data stream (TS) in the form of periodic data frame. A reference transmission time is computed in the transmitters from a synchronization time-stamp. The refer...
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JP4672734B2 |
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JP4606185B2 |
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JP4489931B2 |
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JP4383267B2 |
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JP4373860B2 |
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JP4341265B2 |
To provide a broadcast receiver whereby all contents of a video-recorded program can be viewed without an effect of defective reception even when the defective reception takes place during the reception of the video-recorded program. Whe...
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JP4277270B2 |
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JP2008228082A |
To individually and easily instruct output control of broadcast radio waves from a studio device (master station device) to a plurality of transmission sites (relay apparatuses).When generating an ISDB-T broadcast TS by means of a multip...
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JP2008536376A |
The present invention relates to a method and apparatus for determining transmission identification information (TII) of a receiver in a terrestrial digital multimedia broadcasting system, in which the TII occurrence is detected in a slo...
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JP4116635B2 |
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JP2008141583A |
To solve a problem that in a digital terrestrial broadcasting system in which a SFN (single frequency network) is constructed for sending electric waves of an identical content at an identical time on an identical RF frequency from multi...
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JP2008085636A |
To make the delay times of a signal to be switched and a signal to be bypassed be the same or approximate as to signals of two systems or more in a signal transmission switching device.A receiving means 21 receives a signal, a system dis...
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JP2008072526A |
To construct a broadcasting network by SFN by optimizing the broadcast radio waves of the output of a plurality of broadcasting apparatuses in a service area, and to effectively utilize a vacant channel thus obtained.A digital broadcasti...
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JP2008072218A |
To provide a digital broadcast wave relay device of which the circuit constitution can be made simple and compact.A received RF signal is converted into an IF signal by a down converter 111 based on a first local oscillation signal, and ...
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JP2007221310A |
To provide an on-vehicle OFDM broadcast receiver 15 that corrects deviations in the frequency axial direction of the received signal of an OFDM broadcast radio, wave without the need for utilizing diversity reception. A microcomputer 35 ...
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JP3935145B2 |
To provide a monitoring and controlling apparatus capable of monitoring and controlling a repeater equipped in a relay station transmitting station without using a communication channel and without erroneously recognizing other external ...
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JP2007110433A |
To provide an optimal C/N ratio design/allocation machine which is capable of establishing a design technique for designing optimal performance allocation that optimizes the effect of plant-equipment investment satisfying an end C/N rati...
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JP2007104667A |
To obtain optimum reception quality at different points within a network.This information system (1) is provided with a computation module (11) which obtains the number of repetition, a recording means (12) to save network associated dat...
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JP2007081949A |
To provide a transmission management system for ground digital broadcasts that can sense oscillations and automatically stop the oscillations when an SFN broadcast wave is repeated, and to provide its operating method.Measurement informa...
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JP2006314094A |
To provide an apparatus, method and system for providing broadcasting services that can distinguish a network of a shadow region and a network a non-shadow region in a digital broadcasting system.The system is the digital broadcasting sy...
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JP2006222516A |
To provide a transmission method, whereby mobile terminals can enjoy a stable reception environment, without interfering with a broadcast reception environment of fixed reception terminals located in other reception areas, when a relayin...
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JP2006211171A |
To improve efficiency in a relay amplifier of terrestrial digital broadcast.In the relay amplifier, a master is connected to a slave by optical cables G1-Gn. In the master, the signal of the terrestrial digital broadcast is inputted by a...
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JP2006060557A |
To solve the problem wherein a commercially available digital television set can not receive a digital broadcast signal since a transmodulation system is a system that makes transmodulation of a digital broadcast signal by a QAM (quadrat...
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JP2006005615A |
To provide a digital terrestrial broadcasting of a single-frequency network that eliminates the need to acquire delay times of relay transmitting devices by relay transmitting devices and transmit respective delay time data to time trans...
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JP2005244320A |
To provide a digital broadcast wave monitoring apparatus that can simply be installed and monitor a digital broadcast wave suitable for digital broadcasting.The digital broadcast wave monitoring apparatus, installed in a relay station of...
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JP2005244530A |
To provide a digital television broadcast receiver for a mobile body, capable of succeedingly viewing a digital television broadcast, even if the reception state of a digital television signal has deteriorated.A control circuit 11 of the...
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JP2005109912A |
To reduce the power consumption of a television receiver.An error detecting part 121 detects an error rate S in an error correcting part 103, and when the error rate S is not higher than a reference value Sth that can be regarded as a sa...
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JP2005020340A |
To provide a digital broadcast receiver which can be used both for 12 segment broadcast and for one segment broadcast.The digital broadcast receiver 1 is provided with a selection means (SW part 14) selecting and outputting one broadcast...
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