241 results about "Broadcast transmitter" patented technology

The information available to a driver of a vehicle is greatly expanded using wireless communications (e.g., using Bluetooth wireless communication devices). In one embodiment, information regarding an adjacent vehicle such as a brake light, a turn light, speed, distance, direction, etc., is transmitted from one vehicle to a nearby or adjacent other vehicle. The received information is used in any appropriate manner, such as causing the receiving vehicle to change vehicle speed or brake, to turn to avoid a collision, etc. In a second embodiment, roadside wireless transceivers collect information regarding passing vehicles, and central database is compiled relating to a traffic conditions. The traffic condition information can be passed back to the passing vehicles for appropriate use, e.g., causing the driver to slow down, or even causing a navigation device in the receiving vehicle to manually prompt for or automatically recalculate a best route to an intended destination. In yet another embodiment, broadcast transmitters can be established at signs and other significant locations transmitting information to passing vehicles. The broadcast information may be as simple as indicating the existence of the sign, or depending upon the range of the particular wireless transmitter, the existence of a particular sign, bump in road, curve, etc., can be forewarned far in advance of when the driver will actually see the relevant object. Alternatively, the broadcast information may be quite detailed, e.g., containing a detailed itemization and directions to a large number of gas stations, restaurants, etc., reachable from a particular exit from a highway.

A digital broadcast transmitting and receiving system and a signal processing method thereof that improves the receiving performance of the system. A digital broadcast transmitter can include a randomizer to receive and randomize a data stream into a specified position of which stuff bytes are inserted, a stuff-byte exchange unit to generate known data having a predefined pattern and insert the known data into the specified position of the data stream into which the stuff bytes are inserted, an encoder to encode the data stream output from the stuff-byte exchange unit for an error correction, and a modulator and RF converter to modulate the encoded data stream, RF-convert the modulated data stream and transmit the RF-converted data. The digital broadcast receiving performance can be improved even in an inferior multi-path channel by detecting the known data from the received transmission and using the known data for synchronization and equalization in a digital broadcast receiver.

A digital broadcast transmitting / receiving system and a signal processing method thereof that can improve the receiving performance of the system. A digital broadcast transmitter has a randomizer to randomize an input data stream which has null bytes being inserted at a specified position, a multiplexer to output a data stream formed by inserting specified known data into the position of the null bytes of the randomized data stream, an encoder to encode the data stream outputted from the multiplexer, and a modulator / RF-converter to modulate the encoded data, RF-convert the modulated data and transmit the RF-converted data. The receiving performance of the digital broadcast transmitting / receiving system can be improved even in a multi-path channel by detecting the known data from the received signal and using the known data in synchronization and equalization in a digital broadcast receiver.

A digital broadcast transmitting and receiving system and a signal processing method thereof that improves the receiving performance of the system. A digital broadcast transmitter includes a randomizer to receive and randomize a data stream into a specified position of which stuff bytes are inserted, a replacement sequence generator to generate known data including a predefined sequence, a stuff-byte exchange unit to insert the known data into the specified position of the data stream into which stuff bytes are inserted, an encoder to encode the data stream output from the stuff-byte exchange unit for an error correction, and a transmission unit to modulate the encoded data stream, RF-convert the modulated data stream and transmit the RF-converted data. The digital broadcast receiving performance is improved even in an inferior multi-path channel by detecting the known data from the received transmission and using the known data for synchronization and equalization in a digital broadcast receiver.

The information available to a driver of a vehicle is greatly expanded using wireless communications (e.g., using Bluetooth wireless communication devices). In one embodiment, information regarding an adjacent vehicle such as a brake light, a turn light, speed, distance, direction, etc., is transmitted from one vehicle to a nearby or adjacent other vehicle. The received information is used in any appropriate manner, such as causing the receiving vehicle to change vehicle speed or brake, to turn to avoid a collision, etc. In a second embodiment, roadside wireless transceivers collect information regarding passing vehicles, and central database is compiled relating to a traffic conditions. The traffic condition information can be passed back to the passing vehicles for appropriate use, e.g., causing the driver to slow down, or even causing a navigation device in the receiving vehicle to manually prompt for or automatically recalculate a best route to an intended destination. In yet another embodiment, broadcast transmitters can be established at signs and other significant locations transmitting information to passing vehicles. The broadcast information may be as simple as indicating the existence of the sign, or depending upon the range of the particular wireless transmitter, the existence of a particular sign, bump in road, curve, etc., can be forewarned far in advance of when the driver will actually see the relevant object. Alternatively, the broadcast information may be quite detailed, e.g., containing a detailed itemization and directions to a large number of gas stations, restaurants, etc., reachable from a particular exit from a highway.

A digital broadcast system and method of processing digital data is disclosed, including a digital broadcast transmitter and digital broadcast receiver and methods thereof.

A broadcast transmitter, a broadcast receiver, a method of transmitting a broadcast signal in the broadcast transmitter, and a method of performing reservation-recording of the broadcast signal in the broadcast receiver are provided. The broadcast transmitter transmits broadcast content including reservation-recording information of future broadcast content to be broadcasted in the future. The broadcast receiver extracts the reservation-recording information from the broadcast content, which is currently broadcasted, in response to a user's operation, sets a reservation-recording function, and records the future broadcast content when it is broadcasted afterwards, so that a user can record desired broadcast content at a desired time conveniently in the broadcast receiver with a simple key operation.

A digital broadcast transmitter / receiver, and a signal processing method thereof, includes a randomizer randomizing a dual transport stream which includes a normal data packet and a robust data packet and into which stuff bytes are inserted, a stuff-byte exchanger replacing the stuff bytes of the randomized data with known data, a first RS encoder performing RS-encoding of data output from the stuff-byte exchanger, a packet formatter performing an interleaving of the robust packet of the data output from the first RS encoder and reformatting the packet, an interleaver interleaving data output from the packet formatter, a trellis encoder performing a trellis encoding of interleaved data, a second RS encoder changing a parity by performing an RS encoding of the robust data of the trellis-encoded data, and a modulator modulating data output from the trellis encoder and RF up-converting the modulated data.

A system is disclosed that determines a spatial position of a tracker device relative to an object sending a return signal to the tracker. Such a system advantageously maintains phase accuracy between a forward signal from the tracker device and the return signal generator from the object. The system can include, as part of a tracker device, a reference signal generator, a transmitter, a receiver, and a spatial position computer. The reference signal generator is responsive to and phase-stabilized by a broadcast signal, e.g., a signal received from a commercial AM broadcast transmitter. The transmitter and receiver are both coupled to and phase-stabilized by the tracker reference signal generator. Variations and methods with different advantageous features are also described.

A data structure, a digital television signal, a method of processing a digital television signal in a transmitter and a receiver, and a receiver are disclosed. A digital television signal for use in a digital television receiver for receiving program information from a broadcast transmitter, the digital television signal comprising an information table including a contents-type field indicating whether a type of contents of a program is advertisement. Therefore, a contents-type field capable of discriminating between actual program content data and advertisement content data is applied to standard information indicating content program information, resulting in the elimination of advertisement process problems associated with digital broadcast content data.

Provided is a broadcasting system based on a network using an Internet protocol (IP). In the broadcasting system, a broadcast transmitter previously transmits first access information including a first network address for transmitting a general notification message and second access information associated with management of the broadcasting system, to a broadcast receiver. If a general notification event occurs, the general notification message is generated and the generated general notification message is transmitted to the broadcast receiver via one of a broadcast network and an interaction network using the first network address. The broadcast receiver receives a general notification message based on the first network address in data received from the broadcast transmitter.

Systems and methods for transmitting and receiving diverse signals across regions using a minimum of frequency capacity and maintaining compatibility with the heritage system. A system of the invention comprises at least one broadcast transmitter for transmitting a broadcast signal in a first frequency band to a receiver, at least one gapfiller transmitter for transmitting a gapfiller signal in a second frequency band to the receiver and at least one set of reuse transmitters for transmitting a plurality of spotbeam signals in the first frequency band to define coverage regions and at least one coverage gap where the spotbeam signals are not transmitted. A method of the invention comprises receiving a first signal, receiving a second signal, generating a first intermediate frequency (IF) signal from the first signal, generating a second IF signal from the second signal, filtering the second IF signal to produce a filtered second IF signal and combining the filtered second IF signal and the first IF signal.

A dynamic broadcast system as well as a terminal and a control device for use in such a dynamic broadcast system are presented. Transmission parameters, transmission times and transmission paths used for broadcasting and providing content, either via a broadcast network or a broadband network to terminals used in the dynamic broadcast system are dynamically controlled. Further, a decision logic is provided that dynamically decides transmission parameters, transmission times and transmission paths used for broadcasting and providing content based on monitoring data carrying information on user specific content usage and / or transmission quality data carrying information on the quality of a transmission link between a broadband server and a terminal and / or of a reception of content broadcast by a broadcast transmitter.

The present invention provides systems, methods and devices to generate an indication or signal by an indicator device of a vehicle that is detectable near the vehicle regarding one or more statuses of the vehicle, such as insurance policy, registration, crimes, wanted persons, etc. The indicator device may produce the indication or signal based on a control signal sent from a remote control system to the indicator device via a network and / or broadcast transmitter. The control system may determine the control signal and vehicle status based on information from external database(s). The indicator device may also receive local status information regarding the vehicle or any person associated with the vehicle. Such local status information may be sent back to the control system as a report signal, which may be stored in a remote database. The indicator signal or report signal may be detected by law enforcement near the vehicle.

The present invention provides a method for transmitting data via a radio transmitter, the data including at least one Internet address; a method for receiving data broadcast by a radio transmitter, the data including at least one Internet address; a radio receiver having a recognition circuit for the isolation of Internet addresses from received data transmitted by radio; and a method for controlling a radio receiver, or a device connected to the radio receiver, by data received by the radio receiver, the data including at least one Internet address, the at least one Internet address being formulated as a query for specific data made available by a provider, and the radio receiver or the device connected to the radio receiver being controlled as a function of data queried via a communication interface in accordance with the at least one received Internet address. The present invention makes possible the transmission, to a radio receiver according to the present invention or a device connected thereto, of displayable data or of data usable for controlling the receiver, with a particularly high data rate and data security, by using existing radio transmission systems such as RDS, and utilizing additional transmission capacities of the Internet.

Systems and methods for transmitting and receiving diverse signals across regions using a minimum of frequency capacity and maintaining compatibility with the heritage system. A system of the invention comprises at least one broadcast transmitter for transmitting a broadcast signal in a first frequency band to a receiver, at least one gapfiller transmitter for transmitting a gapfiller signal in a second frequency band to the receiver and at least one set of reuse transmitters for transmitting a plurality of spotbeam signals in the first frequency band to define coverage regions and at least one coverage gap where the spotbeam signals are not transmitted. A method of the invention comprises receiving a first signal, receiving a second signal, generating a first intermediate frequency (IF) signal from the first signal, generating a second IF signal from the second signal, filtering the second IF signal to produce a filtered second IF signal and combining the filtered second IF signal and the first IF signal.

A digital television signal, method of processing the same in a transmitter and receiver, digital broadcast transmitter and digital broadcast receiver are disclosed, in which if a prescribed program having been broadcast by a prescribed broadcast medium is retransmitted by another broadcast medium, a field indicating an original broadcast medium having broadcast the corresponding program is added. The present invention includes a step (a) of receiving an service information table including an original media type field, a step (b) of extracting the original media type field indicating an original broadcast medium of a retransmitted program by parsing the service information table, and a step (c) of displaying the original broadcast medium of the retransmitted program.

A system for controlling storage of content in memory includes a network entitiy, such as a digital broadcast transmitter, a digital broadcast receiver or a terminal. The network entity includes an expiration control application capable of receiving a status of a at least one piece of content stored in memory of a terminal. Each piece of content is associated with at least one parameter including at least a client expiration time and / or a deletion priority value. Based upon the status and the associated parameter(s), then, the expiration control application can control storage of content in memory of the terminal.

A digital broadcast transmitting system and a signal processing method thereof that improves the receiving performance of the system. A digital broadcast transmitter includes a randomizer to receive and randomize a transport stream into a specified position of which stuff bytes are inserted, a replacement sequence generator to generate known data including a predefined sequence, a stuff-byte exchange unit to insert the known data into the specified position of the transport stream into which stuff bytes are inserted, an encoder to encode the transport stream output from the stuff-byte exchange unit for an error correction, and a transmission unit to modulate the encoded transport stream, RF-convert the modulated transport stream and transmit the RF-converted data. The digital broadcast receiving performance is improved even in an inferior multi-path channel by detecting the known data from the received transmission and using the known data for synchronization and equalization.

External portable medical devices, such as portable external defibrillators (PEDs), have long standby times and may be required to indicate their operational status to a user while conserving battery power. Frequently, numerous PEDs are scattered throughout one or more large facility, which may make identifying a PED that is indicating an operational status that requires attention more difficult. To conserve power and provide more effective notice, a PED may use a broadcast transmitter, which minimizes power usage, to communicate the PED's status to a remote monitor that is connected to a relatively unlimited power supply. The remote monitor may then provide a wide variety of sensory alerts to indicate the status of the PED without concern for the power consumption associated with the sensory alert.

In a digital broadband broadcast transmitter, digital data is time interleaved for transmission, and the time interleaved digital data is transmitted in a digital broadband broadcast transmission towards a plurality of receivers. A cellular transmitter is operated in an apparatus. In the same apparatus, the digital broadband broadcast transmission transmitted by the digital broadband broadcast transmitter is received, and the received digital broadband broadcast transmission is time deinterleaved.

A method for processing a stream of a digital broadcast receiver is provided. The method which processes a stream that is divided into a first area allocated to first mobile data and a second area allocated to normal data, includes: receiving a transport stream including new mobile data in at least a part of the second area separately from the first mobile data, demodulating the transport stream, equalizing the demodulated transport stream, and decoding at least one of the first mobile data and the new mobile data from the equalized transport stream. Accordingly, mobile data services may be provided in various ways.

A mobile radio terminal includes a radio circuit for communicating with a communications network so as to receive at least one of telephone calls or messages. The mobile radio terminal also includes a broadcast transmitter controlled to broadcast a signal corresponding to an alert sound when at least one of an incoming call is received or an incoming message is received via the radio circuit. The signal is configured for receipt by a compatible receiver and the alert sound is configured to alert a user to the receipt of the call or message by the mobile radio terminal.

A digital television signal for receiving program and system information protocol (PSIP) data, a method for processing the digital television signal, and a digital television receiver are disclosed. The digital television signal used in the digital television receiver in order to receive a program system information protocol (PSIP) data from a broadcast transmitter includes a rating region table containing the PSIP data. Herein, the rating region table includes a global rating value field defining a global rating value which is valid for all graphical rating regions, a rating region field defining a specific graphical rating region to be associated with the rating region table, and at least one local rating value field identifying a local rating value which is valid for the specific graphical rating region only.

The present invention discloses a method for modulating digital television ground broadcasting transmitter based on insertion training sequence and LDPC code, wherein the method comprises the following steps: 1) forming an FFT coded data block with the input bit flow through LDPC coding; 2) switching the FFT coded data block to a time domain discrete coded data sample block through IFFT; 3) forming a complex training sequence discrete sample block with a mode that a training sequence is used as a real part sequence and an operational indicator sequence is used as an imaginary part sequence; 4) continuously repeating the complex training sequence for four times to form a time domain insertion training sequence discrete sample block; 5) directly overlapping the time domain discrete coded data sample block with the time domain insertion training sequence discrete sample block for forming a time domain insertion training sequence coded data block; 6) inserting a circulating prefix into the time domain insertion training sequence coded data block for forming a signal frame; 7) forming a signal frame pulse with a square-root raised cosine roll-off filter; and 8) upconverting the baseband signal to the carrier.

A content presentation apparatus comprises a receiver receiving content items, such as individual adverts. A filter processor filters the content items in response to a user profile thereby generating a subset of content items associated with the user. The subset of content items may e.g. be stored in a data storage. The content presentation apparatus furthermore comprises a receiver receiving a presentation content stream. The presentation content stream may e.g. be a television signal received from a conventional television broadcast transmitter. An output processor presents the presentation content stream to the user. A user context processor determines a current user context for the presentation and a selection processor selects at least one content item from the subset of content items in response to the current user context. The output processor then overlays the selected content item(s) on the presentation content stream to generate a user adapted output.

A method of controlling an antenna signal combiner in a vehicle having multiple antenna elements, a navigational system and a receiver comprising the steps of receiving signals from at least one transmitter, determining first position coordinates of the vehicle using the navigational system, determining second position coordinates of the at least one transmitter, and combining signals from the multiple antenna elements to steer an antenna beam from the first position coordinates to the second position coordinates.

External portable medical devices, such as portable external defibrillators (PEDs), have long standby times and may be required to indicate their operational status to a user while conserving battery power. Frequently, numerous PEDs are scattered throughout one or more large facility, which may make identifying a PED that is indicating an operational status that requires attention more difficult. To conserve power and provide more effective notice, a PED may use a broadcast transmitter, which minimizes power usage, to communicate the PED's status to a remote monitor that is connected to a relatively unlimited power supply. The remote monitor may then provide a wide variety of sensory alerts to indicate the status of the PED without concern for the power consumption associated with the sensory alert.