191 results about "High definition tv" patented technology

A set-top media system is disclosed which can be combined with an open architecture personal computer (PC) to provide a feature-rich secure integrated media center while meeting security rules of most major conditional access and content protection industry rules such as Cable Labs DFAST and PHILA agreements; and DTLA agreements for 5C-DTCP for IEEE1394, USB, and IP. The set-top media center and PC share common resources such as high definition display, remote control, hard disk drive, and other external unsecure storage devices. All media content is available seamlessly using a PC user interface, including controlled-content media such as high definition TV, within a PC desktop window. All controlled-content media is manipulated and managed within the set-top media system in a seamless manner. A novel mechanism is disclosed to allow controlled-content media to be stored on unsecure devices in encrypted form while overcoming the disk cloning attack problem for move operations.

Improved decision feedback equalizer and decision directed timing recovery systems and methods suitable for use in connection with a dual mode QAM/VSB receiver system are disclosed. A trellis decoder operates in conjunction with a decision feedback equalizer circuit on trellis coded 8-VSB modulated signals. The trellis decoder includes a 4-state traceback memory circuit outputting a maximum likelihood decision as well as a number of intermediate decisions based upon the maximum likelihood sequence path. Any number of decisions, along the sequence, may be provided as an input signal to timing recovery system loops, with the particular decision along the sequence chosen on the basis of its delay through the trellis decoder. Variable delay circuitry is coupled to the other input of the timing recovery system loops in order to ensure that both input signals bear the same timestamp. Final decisions are output from the trellis decoder to a DFE in order to enhance the DFE's ability to operate in low SNR environments. A decision sequence estimation error signal is also generated and used to drive the tap updates of both the DFE and an FFE portion of the equalizer.

Broadcast methods and systems for simultaneously transmitting, processing and selectively displaying more than one video camera perspectives recorded at live entertainment venues on remote video monitors. Video recording can be from more than one entertainment venue or can be more than on synchronized video camera perspective of an activity at an entertainment venue. Remote video monitors can be venue-based hand held devices or video monitors used at home. Remote video monitors can include hand held devices and high definition televisions (e.g., HDTVs) including flat panel display screens therein. Within a venue, camera views can be processed and formatted for display on display screens associated with remote video monitor. A user can select from more than one view from video cameras that the user wants displayed on the remote viewer, enabling a user of the remote video monitor to view more than one camera view through the remote viewer at a time/simultaneously.

The present invention enables software and firmware downloads to high definition television (HDTV) appliances via a television terminal. A download control message received at the terminal may comprise: (i) a first version identifier identifying a version of an available software or firmware download; (ii) a first type identifier identifying a particular type of HDTV appliance for which the download is intended; and (iii) a download object containing the software or firmware to be downloaded. The terminal obtains a second type identifier from the HDTV appliance that identifies a type of the HDTV appliance. If the type identifiers correspond, the terminal obtains a second version identifier from the HDTV appliance, which identifies a current version of software or firmware of the HDTV appliance. If the version identifiers do not correspond, the terminal may pass the download object to the HDTV appliance.

A method and system for displaying media in the otherwise blank spaces remaining when a standard television signal is viewed on a high definition television screen and vice versa. In one embodiment, two separate media are accessed by a set top box for a high definition television screen. A standard television broadcasting signal is accessed as well as second media signal. The second media signal may consist of for example advertisements, program guide information, an internet browser, other media, etc. The standard television signal is rendered on a main portion of the high definition television screen, while the second media occupies the remaining space.

Processes for selecting, manipulating and arranging data points or pixels derived from information bearing signals are useful to reduce the bandwidth of, or improve the perceived quality of, such a signal as transmitted and displayed. The techniques utilize time-varying sampling schemes and take into account the characteristics of the human visual system. For each information frame, a subset (3) of all possible data points (1) is selected (2). A further subset of active data points (5) is selected (4) for which data will actually be sampled. The active points (5) are further divided (6) into points for which a value will be transmitted (x-points) (7) and points which will be sampled but for which no separate value will be transmitted (o-points) (8). A mathematical association between the x-points and o-points is made (9) and new values to be transmitted are calculated for the x-points (10). The parameters of the selection and association processes are varied in a non-trivial manner and the, now modified, cycle repeated (11) for subsequent data frames. In particular, the techniques may be used to process a high-definition television signal prior to its storage, or transmission over a low-bandwidth channel.

According to example configurations herein, a downstream video processor operates in conjunction with an existing consumer-operated tuner system. The downstream video processor system can be an add-on system disposed in a communication link between the consumer-operated tuner system and a remote video playback device such as a hi-definition television. In lieu of processing video data locally in the set-top box, the consumer-operated tuner system can transmit the video data to the downstream video processor for processing. The downstream video processor in the communication link can be configured to provide enhanced video processing services (e.g., better resolution, higher frame rate rates, enhanced signal to noise ratio, enhanced color quality, 3-D graphics, etc.) with respect to video processing services supported by an upstream video decoder in the consumer-operated tuner system.

Provided are highly reliable information processing equipment enabling a high recording density, and a blue color, blue-violet color and violet color based semiconductor light emitting device operable at a low threshold current density, which device is suitable for the information processing equipment. According to the present invention, there can be realized highly reliable optical information processing equipment enabling high recording density, which is capable of sufficiently recording or reproducing a dynamic image in or from a high-definition TV.An n-type impurity is doped in a barrier layer of a quantum-well active layer of a semiconductor light emitting device at a high density. Alternatively, the oriented plane of a quantum-well active layer of a semiconductor light emitting device is inclined from the (0001) plane, whereby the threshold current value of the semiconductor light emitting device can be reduced. The semiconductor light emitting device is represented by a gallium nitride based compound semiconductor laser device.

Methods and systems for communicating information in a network are disclosed herein and may include receiving, at a mobile terminal, a high definition television (HDTV) signal via a DVB-H downlink communication path. A standard definition television (SDTV) signal may be simultaneously received at the mobile terminal via a cellular downlink communication path. The SDTV signal and the HDTV signal may comprise the same media content. The HDTV signal received via the DVB-H downlink communication path and the SDTV signal received via the cellular downlink communication path may be selected in the mobile terminal for processing. The selection may be based on a preference indicated via the mobile terminal. The selection may also be based on at least one downlink channel condition indicator corresponding to the HDTV signal or the SDTV signal.

A method and system for combining light emitted by dispersed light sources for use in a projection display or similar system. A plurality of elongated and tapered light integrators are placed side by side forming an array, each having at their small input end a light source, such as an LED. Light collimated by each light integrator is further collimated by a convex lens disposed immediately at the output end of the light integrator. From the convex lenses, the light falls upon an array integrator, preferably a fly-eye type integrator, and passes through it to a second array integrator. Light emerging from the second array integrator is then passed through one or more relay lenses and falls upon a light modulator, such as a digital mircomirror device (DMD). The modulated light beam then passes through a projection lens and onto a visual image display screen. The display screen may, for example, be the screen of a high definition television (HDTV).

Methods and apparatus are provided for detecting scene changes between successive fields in a digital television signal. Adjusts the picture encoding type to optimize the encoding efficiency of the video encoder when a scene change including flashes or bad fields caused by improper editing is detected. Aligning I-frames starting a new GOP with scene changes greatly improves the coding efficiency of the MPEG encoder (100). In a pre-processing stage (205, 210), the change in the sum of pixel differences between successive odd fields or successive even fields is calculated for each successive input field. A scene change is detected when a large positive value is followed by a large negative value in the change in neutral. The decision of which picture type to use is not made until the final encoding stage (225, 235). I-frames can be disabled when the encoder buffer level is too high. A counter (counting down) resets the scene change indication in order to avoid a permanent scene change state for the transition from stationary to motion. For the MPEG film mode frame picture determined as a scene change frame, when the scene change may occur on the field boundary (such as there is no redundant field in the picture), the frame-based discrete cosine transform (DCT) and predictive coding recommended by MPEG will be withdrawn. .

An encrypted content and its encryption key under a copy right use condition of prohibiting a copy by the device having received a content are stored, and the encrypted content is copy-transferred with another device through the network, and at the same time, the encryption key is transferred through the network, so that it is stored in either one of the devices. Even when a high definition television broadcast signal received with a copy-once taken as a copy right use condition is recorded, an access flag that controls the presence or absence of the reproduction of the broadcast content for each broadcast content is provided. When an original broadcast content is transcoded into a low resolution, and is transfer to another device, its access flag is turned on, thereby making the reproduction possible.

A scaling engine, blending mechanism, memory controller, frame buffer and video driver are included within a semiconductor, such as a Field Programmable Gate Array (FPGA), to provide broadcasting of signals at a high resolution format by combining two or more low resolution video signals to create a high resolution signal in real-time High Definition format, such as 1080p. The high resolution signals can be concurrently displayed as one or more image areas on a display device in any contemplated size, number and arrangement.

The present invention discloses an HDTV, and a method for controlling adjustment of the HDTV, which make it possible to set control information of the HDTV easily at low cost without unpacking the TV set. Adjustment data is included in an INFO frame, transmitted from an external device, and written into a register of an HDMI receiver 14 through a video signal input terminal 13. Further, a microcomputer 15 reads the adjustment data and controls the adjustment of the HDTV 11 based on contents of the data.

A method and apparatus for transcoding macroblocks of a high definition television signal to co-sited macroblocks of a standard definition television signal wherein SD macroblocks are derived directly from co-sited HD macroblocks, i.e. without having to compute the SD macroblock information from its corresponding SD image sequence.

The method comprises: using wired or wireless approach to connect the PC (personal computer) to the HDTV (high definition TV); the PC executes the IPTV-related client-side software and complete the reception and decode of video stream media signals; the HDTV completes the display of video stream media signals. The invention provides a two-way transmission approach between PC and HDTV, which can either transmits the video (VGA) and audio signals from PC to HDTV, or transmits the controller signals (such as USB, microphone, PS/2 and computer turn on/turn off control signals)from HDTV to PC.

Communication link including a cable containing four pairs of wires, three transmitters to transmit uncompressed video data and audio data over three of the pairs of wires to three receivers, and two transceivers to form a bidirectional multi data type communication link over the fourth pair of wires. An active mode of operation for transmitting the uncompressed video data and the audio data over the three pairs of wires, and for transmitting bidirectional data over the fourth pair of wires. And a first low power partial functionality mode of operation for transmitting bidirectional system controls.