155results about "Simultaneous television signal transmission by multiple carrier" patented technology

A method of serving out video over a network of video servers includes evaluating a capacity of the network as a whole to serve out specific video items by establishing, for each video server in the network, an established ability of each server to serve out the specific items that are potentially servable from each video server. The method further includes using the established abilities of each video server to evaluate an overall capability of the network as whole to serve out each of the specific video items. The method also includes varying the overall capability to serve out at least a selected one of the specific video items in accordance with the overall capability of the network.

Embodiments of the invention provide a method and apparatus for a wireless health monitoring system for interactively monitoring a disease or health condition of a patient by connecting an internet-enabled wireless web device (“WWD”) to a digital camera or other health monitoring device. The WWD may accommodate a memory device for enhanced storage capabilities that may be particularly pertinent to data-intensive tasks such as the handling and storage of images or other visual data. The health related data is transmitted from the WWD to a server using standard internet protocols and may be integrated with various operating systems for handheld or wireless devices, especially those with enhanced capabilities for handing images and visual data.

A method for recording pushed interactive data streams of a program. A pushed data stream is broadcast to a receiving station. The data stream includes one or more data objects. The data stream may also reference to live data objects which are intended for immediate consumption and become obsolete thereafter. The data stream may include a file table and object properties corresponding to the data objects. When the data stream is received by the receiving station, the individual data objects are extracted from the data stream. The data objects, accompanying object properties and the file table are then stored on a storage device. Data objects which are external to the data stream or to the program (e.g., data objects from other carousels) are retrieved and are also stored. Live data objects are not stored, but references to these data objects are stored, so that when the program is replayed, current versions of the referenced live data objects can be used. A program not being recorded may contain data objects which are flagged to be cached which are recorded automatically. Consequently, other programs may subsequently access them from the recording when they are played.

A method and an apparatus to synchronize an audio signal and a video signal. The method includes: displaying video on a screen that corresponds to an audio signal including a high frequency component having a predetermined pattern inserted therein to indicate when a scene change occurs in a video signal, detecting a scene change in the displayed video and detecting the high frequency component having the predetermined pattern in the audio signal, calculating a time difference between a time when the scene change is detected in the displayed video and a time when the high frequency component having the predetermined pattern is detected in the audio signal, and controlling delay times of the audio signal and the video signal according to the calculated time difference. Accordingly, the audio signal and the video signal can be automatically synchronized without performing a separate measuring operation.

The present invention is directed to a system, method and computer program for enabling a user (100) (an auditor or a viewer) to access complementary information related to one or a plurality of sequences or topics of interest (102) in a recorded program (103) previously broadcast on the radio or television and played back on a device, such as an audio or video tape or disk recorder/player (104). The preferred embodiment of the invention relates to a system and method for enabling a person (100) listening to or watching a recorded program (103), to select one or a plurality of topics (101) (102) drawing his or her attention and for immediately receiving further information related to these topics from the World Wide Web. The system is based on the synchronization of local times (204) (205) of transmitters (201) and recorders (203). The flow of information transmitted, received and recorded is always synchronized, independently of the relative positions of recorders and transmitters. The synchronization is done referring to an absolute or universal time such as the Global Positioning System Time (GPS-time), the Global Orbiting Navigational Satellite System (GLONASS) time or another suitable universal time based on a satellite system. The GPS or GLONASS receivers are integrated or connected to the broadcasting stations. At the receiver side, GPS or GLONASS receivers may be integrated or connected to the audio or video recorders. The system is also based on a plurality of hyperlinks defined during the production and recording of the broadcast program, for given sequences corresponding to particular intervals of time synchronized with the universal (absolute) time. The hyperlinks are associated wit the information that is broadcast in the program. They can be selected by users during the playback of the recorded program during predefined intervals of time and activated to access additional information and services.

The present invention provides a method and system for delivering SDTV/HDTV services that achieves significant bandwidth savings, while keeping the existing SDTV transmission unchanged. In accordance with one embodiment of the invention, a system is provided for delivering HDTV signals. In this system, an HD enhancement layer containing an HD enhancement data stream is obtained\. The HD enhancement layer is delivered to a server to enable a subscriber to access the server, via a set top terminal, to receive the HD enhancement layer over a network system. In another embodiment of the invention, a base layer containing a SD data stream is also delivered to the set top terminal to allow the terminal to integrate the HD enhancement layer and the base layer into a HDTV output.

The present invention provides a movie channel to a user on a mobile device. Movie based content associated with a movie channel is automatically delivered and stored on a mobile electronic device for access by a user. Using the device, users can quickly and efficiently access movie information without having to type in information, or specifically request the movie information to be downloaded to the device. The movie channel includes several different modes for categorically displaying different types of movie information. Some example modes include: a movies mode; a theaters mode; and a current top movies mode. The movies mode is organized to display information relating to particular movies on the electronic device. The theaters mode is arranged to display information relating to particular theaters on the electronic device. The current top movies mode displays information relating to the current “hot” movies.

A system and method are disclosed for performing digital multi-channel decoding of a BTSC composite audio signal. Analog-to-digital conversion is performed on a composite analog audio signal at a fast clock rate to generate a composite digital audio signal at a first sample rate. Digital frequency compensation is performed on the composite digital audio signal at the first sample rate to generate a compensated composite audio signal. Digital channel demodulation and filtering are performed on the compensated composite audio signal at the first sample rate to generate a first single channel audio signal at a second sample rate.

In a digital broadcast communications system, a higher priority component and a lower priority component are broadcast from a transmitter to a receiver. Each of these components generates a main and a supplemental signal, and each supplemental signal is advanced in time with respect to the corresponding main signal. The main and supplemental signals for both the higher and lower priority components are combined into a single signal, which is broadcast to a receiver. In the receiver, the time advanced supplemental signals are stored in a buffer to time align them with their corresponding main signals. Both main signals are processed in the normal manner in the receiver, and are also monitored to detect a fading event. When a fading event is detected, the corresponding buffered supplemental signals are substituted for the faded main signals and normal processing continues.

In a network environment, the Quality of Service becomes an important issue particularly for applications involved with real-time multimedia streaming. Any transmission failure may cause service disruption and the failure has to be quickly recovered to minimize the impact. A unified home networking standard based on existing media in home has been developed to meet the increasing demand for bandwidth, reliability and availability. However, the fault tolerant protocol adopted by the home networking standard is based on an advanced selective ARQ (Automatic Retransmission Request) protocol which may take hundreds of millisecond to establish a backup channel. Alternatively, a hot standby backup channel has to be used to achieve quick switch without data loss at the expense of increased power consumption by the hot standby channel. The present invention discloses a quick-switch modem that can quickly switch from a primary channel to a backup channel upon detection of transmission failure. The quick-switch modem contains an additional interface between the modems for the primary channel and the secondary channel. In order to achieve quick failure detection and data re-route, the quick-switch modem relies on lower layers of the network link to facilitate failure detection and data re-route. Consequently, the switching time is substantially reduced without the need of hot standby. Alternatively, the quick-switch modem can be configured for load sharing to enhance overall available bandwidth.

The invention relates to an output-oriented network transmission technique of a multi-screen splicing system. The core of the technique is output-oriented smart segmentation and accurate transmission; in other words, segmentation processing is performed on signals in a smart way according to the requirements of output display, and then each part of data is accurately transmitted to a corresponding display unit. The technique comprises the following main steps that: step 1, an input acquisition end processor (2) acquires a signal from a signal source (1), and performs compression processing on the corresponding signal according to a display policy sent by a control host (5); step 2, the acquisition end processor (2) segments the signal according to the display policy, compresses and packs the segmented image data and then transmits the same to an output display end through a network; step 3, a display end processor (3) unpacks and decodes the data and performs amplification processing on the signal according to the display policy; and step 4, the display end processor outputs and displays the image on a corresponding spliced display screen (4). In the whole process, the data is segmented in advance at the input end and each part of data is accurately transmitted to the corresponding display unit; and the compression of the signal is completed at the input end while amplification is realized by the output end; therefore, the data in the whole network system is transmitted at the lowest flow rate and the waste of bandwidth is avoided.

The invention discloses high resolution signal source splicing wall displaying methods. I-line-j-column balanced segmentation is carried out on high resolution image signals which are difficult to transmit through utilization of a signal channel; a windowing window is segmented into ixj subwindows; preset pixel region overlaying processing is carried out on segmented regions; whether each subwindow and each display screen have an intersection or not; if each subwindow and each display screen have the intersection, the pixel processed segmented region corresponding to each subwindow is sent toa corresponding displaying processing module for zooming and clipping processing; and synchronous overlaying and displaying are carried out on the segmented regions obtained through clipping processing, so the high resolution image signals of a signal source are transmitted to a splicing wall for real-time displaying. The technical problem that a technology of transmitting the high resolution image signals to the splicing wall for real-time displaying is deficient at present is solved.

Disclosed is a method and system for detecting processor congestion during decompression of a stream of video and audio data. The system and method includes a processor receiving and decoding a first frame of audio data in accordance with an audio decode software algorithm. The processor generates a first audio time stamp ATS1 indicating the time at which the processor finishes decoding the first frame of audio data. Subsequently, the processor receives and decodes a second frame of audio data in accordance with the same audio decode software algorithm and generates a second audio time stamp ATS2 indicating the time at which the processor finishes decoding the second audio data frame. The first audio time stamp ATS1 is added to a predetermined amount of time T, the result of which is compared with ATS2. T, in one embodiment, is the time it takes a speaker to generate audio corresponding to a decoded frame of audio data. If ATS2 is later in time than (ATS1+T) by a predetermined amount TMIN, a signal is generated indicating that the processor is not decoding received audio frames fast enough due to processor congestion. In response to this signal, the processor workload can be redistributed in favor of increased audio decoding. If ATS2 is not later in time than (ATS1+T) by a predetermined amount TMIN, then no modifications to the processor workload need be made.

An antenna device includes a housing defining an interior cavity, and an RF antenna situated within the housing. The RF antenna receives high definition television signals broadcast over the air. An MHL connector is mounted on the housing. An external audio or video streaming signal device is coupleable to the MHL connector. An MHL to HDMI converter circuit situated within the interior cavity of the housing receives signals from the external audio or video streaming signal device and processes these signals into an HDMI signal format. The HDMI signals are provided on an HDMI output connector mounted on the housing. RF signals from the RF antenna are provided to an RF coaxial cable connector also mounted on the housing.

At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point groups to which data of the first data stream are assigned. Also, data of the second data stream are assigned to the signal points of each signal point group. A difference in the transmission error rate between first and second data streams is developed by shifting the signal points to other positions in the space diagram. At the receiver side, the first and/or second data streams can be reconstructed from a received signal. In TV broadcast service, a TV signal is divided by a transmitter into, low and high, frequency band components which are designated as a first and a second data stream respectively. Upon receiving the TV signal, a receiver can reproduce only the low frequency band component or both the low and high frequency band components, depending on its capability.

Various embodiments are described herein for a universal television receiver that is capable of processing television channel signals broadcast according to a variety of analog and digital broadcast standards.

In the data structure for managing reproduction of graphic information, first graphic information is stored multiplexed with main data in a first clip file and second graphic information is stored in a second clip file separate from the first clip file.

A system and method are provided for processing audio/video (A/V) data provided from multiple A/V sources. The system includes A/V data capture devices for receiving the A/V data, each of which receives A/V data from a predetermined number of A/V sources; drivers for driving output data of the A/V data capture devices for a first set of application programs, each of the drivers receiving output data from corresponding one of the A/V data capture devices and being associated with corresponding one of the first set of application programs; virtual drivers for driving input data for a second set of application programs, each of the virtual drivers being associated with corresponding one of the second set of application programs; and a channel mapping unit for mapping data from the drivers into the virtual drivers.

Method and apparatus for generating a composite audio signal clocked to a selected frequency from left and audio input signals. A video/audio signal generator transmits the left and right audio input signals, together with a video signal having a horizontal synchronization signal embedded therein. If copy protection has not been applied to the video signal, the embedded horizontal synchronization signal will have a frequency of 15.734 KHz. If applied to the video signal, copy protection techniques will shift the frequency of the horizontal synchronization signal. To avoid distortion of the composite audio signal, a switch configured to selectively couple the video signal or a secondary video signal generated by an internal video signal generator to an audio signal processor which generates the composite audio output signal from the left and right audio input signals. Embedded within the secondary video signal is a horizontal synchronization signal having a frequency of 15.734 KHz. Thus, if copy protection features cause the frequency of the signal embedded within the primary video signal to shift, the switch may be used to couple the audio signal processor to the internal video signal generator, thereby ensuring that the composite audio signal will always be clocked to the selected frequency.

An audio/video (AV) apparatus such as a digital television set and a digital set-top-box device, which can perform additional operations such as an electronic album, MP3 and FIMS, and an additional operation performing apparatus appropriate for the digital AV apparatus. The digital AV apparatus can include an AV decoder to output video and audio data, a scaler to adjust resolutions of video data output from the AV decoder and additional information video data provided from an external video source and to output the adjusted resolution, an audio processor to process audio data output from the AV decoder and additional information audio data provided from an external audio source, and a controller to receive a command provided from an external commander and to control a selection operation of the scaler and the audio processor based on the command.