31results about "Supplementary picture signal insertion" patented technology

To address the scarcity of radio frequency (RF) spectrum, the disclosed systems offer unique ways to mitigate interference between television broadcasters (including their direct audience and viewers served via cable television) and other concurrent users of the RF spectrum, e.g. for one-way or two-way wireless communication. A preferred embodiment makes use of the “framing” characteristics of the “letterbox” video display format. RF emissions of the simultaneous RF spectrum user are keyed “on” only or substantially only during the time intervals when the blanking intervals and / or letterbox-border video lines are being scanned on the display, i.e. when the potentially affected (interfered with) television display is in the letterbox-frame-scanning portions of each video field. The concurrent uses may support services for voice (including telephony, music etc.), data (including Internet, intranet, etc.); image or control; fixed, portable, mobile or nomadic; narrowband, broadband or ultra-wideband; radiodetermination, diathermy, etc. Additionally, the concurrent user's emitted power and receiver sensitivity is continuously adjusted according to the broadcast television signal.

In an embodiment, an electronic device may be configured to capture still frames during video capture, but may capture the still frames in the 4×3 aspect ratio and at higher resolution than the 16×9 aspect ratio video frames. The device may interleave high resolution, 4×3 frames and lower resolution 16×9 frames in the video sequence, and may capture the nearest higher resolution, 4×3 frame when the user indicates the capture of a still frame. Alternatively, the device may display 16×9 frames in the video sequence, and then expand to 4×3 frames when a shutter button is pressed. The device may capture the still frame and return to the 16×9 video frames responsive to a release of the shutter button.

The invention provides an adaptive video definition adjusting method, apparatus and terminal. The adaptive video definition adjusting method provided by the invention comprises the following steps: detecting a current CPU load detection parameter of a terminal device participating in a video call in a video call process; judging whether the current CPU load detection parameter reaches a preset peak value, and if judging that the current CPU load detection parameter reaches the preset peak value, reducing the definition parameter of the video according to a predetermined adjustment strategy, wherein the definition parameter of the video comprises resolution, a code rate and / or a frame rate of the video. According to the adaptive video definition adjusting method provided by the invention, the definition parameter of the video is dynamically and adaptively adjusted via CPU load detection and network bandwidth detection and the like, so as to guarantee the normal operation of the video call and guarantee better smoothness as well.

In an embodiment, an electronic device may be configured to capture still frames during video capture, but may capture the still frames in the 4×3 aspect ratio and at higher resolution than the 16×9 aspect ratio video frames. The device may interleave high resolution, 4×3 frames and lower resolution 16×9 frames in the video sequence, and may capture the nearest higher resolution, 4×3 frame when the user indicates the capture of a still frame. Alternatively, the device may display 16×9 frames in the video sequence, and then expand to 4×3 frames when a shutter button is pressed. The device may capture the still frame and return to the 16×9 video frames responsive to a release of the shutter button.

To address the scarcity of radio frequency (RF) spectrum, the disclosed systems offer unique ways to mitigate interference between television broadcasters (including their direct audience and viewers served via cable television) and other concurrent users of the RF spectrum, e.g. for one-way or two-way wireless communication. A preferred embodiment makes use of the “framing” characteristics of the “letterbox” video display format. RF emissions of the simultaneous RF spectrum user are keyed “on” only or substantially only during the time intervals when the blanking intervals and / or letterbox-border video lines are being scanned on the display, i.e. when the potentially affected (interfered with) television display is in the letterbox-frame-scanning portions of each video field. The concurrent uses may support services for voice (including telephony, music etc.), data (including Internet, intranet, etc.); image or control; fixed, portable, mobile or nomadic; narrowband, broadband or ultra-wideband; radiodetermination, diathermy, etc.

The present invention relates generally to an apparatus for bi-directional communications of voice, data, and alarms, and simultaneous transmission of video signals over a single cable such as coax. In more particular, it applies to a communications system that utilizes coax-type cabling to offer computer related in-room guest services such as on-television screen display of their bills, etc. The instant invention utilizes a digital communications protocol, preferably PCM, to fit a plurality of general purpose communications channels within conventional broadcast television frequencies. These communication channels might variously be used to carry telephone voice data, thereby obviating the need for a separate phone network, or, more generally, they might be used to transport any sort of digital data (e.g., room billing information, outgoing faxes, etc.) The instant invention also provides a means for directing broadcast video information to specific rooms within the structure. Finally, the instant invention also accommodates the remote generation of signals / alarms and their detection and processing in a central facility.

A data transmitting / receiving apparatus and method in which color gamut information is added to a teletext signal in a blanking interval so that a display device can recognize whether a color gamut has been extended, are provided. The apparatus includes a control unit which determines whether an image signal is a wide color gamut signal. A signal processing unit encodes color gamut information of the wide color gamut signal and allocates the color gamut information to a data region of a teletext interval if it is determined that the image signal is the wide color gamut signal. The signal processing unit transmits an image signal including a teletext packet in which the color gamut information is recorded.

An aspect-ratio conversion apparatus and a method. The aspect-ratio conversion apparatus to convert an aspect-ratio includes a letterbox border detection unit to detect letterbox border values of a current input image, an adaptive output unit to determine whether the detected letterbox border values are valid, and to output the detected letterbox border values if the detected letterbox values are valid, and a scaling unit to adjust a size of a substantial image area to fit a size of a screen of a display device based on the letterbox border values received from the adaptive output unit.

The purpose of the present invention is to transfer HDR image data among machines in satisfactory fashion. A transmission device (source machine) transmits HDR image data to a reception device (sink machine) over a channel. In the process, the transmission device transmits transfer format information and / or gamma correction information for the HDR image data, to the reception device over the channel. The reception device performs processing (a decoding process, gamma correction process, and the like) of the received HDR image data on the basis of the received transfer format information and / or gamma correction information. E.g., the transmission device receives from the reception device information about transfer formats and / or gamma correction formats with which the reception device is compatible, and selects a format with which the reception device is compatible for use.

A subtitle data encoding apparatus, which is used in a video image transmission system, creates loading blocks (70) from relative position information by sampling an input bit stream at a frame interval. The loading block corresponds to a pixel data block and contains changeover position information which updates a change position, delays the update operation and sets the length of the delay. The address used to access a color lookup table (71) for displaying subtitle data is changeable at the change position to access different display data stored therein. The pixel data block is encoded from subtitle data and the loading blocks and pixel data blocks are combined for transmission. The changeover position information can also be used to progress a color-wipe operation.

An electronic device including a display unit configured to display a letterbox in a letterbox region and an image in an image display region; and a controller configured to display a guide image at a boundary portion between the letterbox region and the image display region, and change display sizes of the letterbox region and the image display region based on a movement of the guide image.

A video call host module comprising a processor configured to decode video data corresponding to videos from endpoints and rank the videos based on motion indicators corresponding to each of the endpoints. The motion indicators are calculated from motion vectors corresponding to each of the videos. A predetermined number of highest-ranking videos are selected for display. A method of hosting a video call includes receiving encoded video data including motion vectors. Videos are ranked based on a motion indicator calculated from the motion vectors for each of the videos. Encoded video data is converted to decoded video data, and decoded video data corresponding to a predetermined number of the highest ranking videos is combined to create a single video.

One aspect of the present invention discloses an apparatus for detecting additional data for preventing forgery of video data and displaying the video content. The apparatus includes a content input unit configured to receive the video content (the video content including the additional data), a display unit configured to display the video content, an additional data detector configured to detect the additional data from the video content (the additional data including a watermark), and a display controller configured to control a display screen of the video content according to an additional data detection result.

Disclosed are a high-definition digital video signal transmission method and device, a high-definition digital video camera and a video acquisition device. The technical solution provided in the embodiments of the present invention comprises: transcoding a high-definition digital video signal in accordance with a line-by-line sequence at a sending end to obtain an analogue video line signal, and sending analogue video line data which is obtained by conversion; and receiving the analogue video line data at a receiving end, and conducting decoding conversion on the received analogue video line data to obtain high-definition digital video line data. The present invention can convert a high-definition digital video signal into an analogue video signal to conduct transmission, thereby being able to solve the problem that a high-definition digital video signal cannot be transmitted for a long distance in the existing high-definition digital video monitoring technology.

The invention relates to the field of video processing, and discloses a video resolution improving method and device. The method comprises the steps that edge extraction is carried out on an original image frame in a video; an image edge acquired through edge extraction is superimposed to the original image frame to acquire a new image frame; and the new image frame forms the video. According to the video resolution improving method and device, for a standard definition video, the resolution is obviously improved; and a viewer can view the video of better resolution by spending less traffic.

An image generating section reads image data from an image storing section to generate an original image in keeping with the attitude of a head-mounted display. A lens distortion correcting section generates a primary image by correcting beforehand the original image in a manner canceling out the distortion thereof that appears when viewed through lenses of the head-mounted display. A different image embedding section generates an embedded image by embedding a different image into an unused area of a rectangular format for transmitting the primary image. An HDMI transmitting section transfers the embedded image to the head-mounted display.

A signal receiving apparatus includes a receiver configured to receive a first format data and a second format data, to convert the second format data to the first format, and to transmit the first format data and the converted second format data, and a decoder configured to receive the first format data and the converted second format data transmitted from the receiver and to restore one of an image data and an acoustic data from the first format data and the converted second format data.

An electronic device, including a display; and a controller capable of displaying, via the display, an image being reproduced, a letterbox and subtitles positioned at the letterbox; receiving a control signal for enlarging a display size of the image; controlling the display to enlarge the image in response to the control signal, further the subtitles is positioned at the enlarged image.

Disclosed are a high-definition digital video signal transmission method and device, a high-definition digital video camera and a video acquisition device. The technical solution provided in the embodiments of the present invention comprises: transcoding a high-definition digital video signal in accordance with a line-by-line sequence at a sending end to obtain an analogue video line signal, and sending analogue video line data which is obtained by conversion; and receiving the analogue video line data at a receiving end, and conducting decoding conversion on the received analogue video line data to obtain high-definition digital video line data. The present invention can convert a high-definition digital video signal into an analogue video signal to conduct transmission, thereby being able to solve the problem that a high-definition digital video signal cannot be transmitted for a long distance in the existing high-definition digital video monitoring technology.

A subtitle data encoding apparatus, which is used in a video image transmission system, creates loading blocks (70) from relative position information by sampling an input bit stream at a frame interval. The loading block corresponds to a pixel data block and contains changeover position information which updates a change position, delays the update operation and sets the length of the delay. The address used to access a color lookup table (71) for displaying subtitle data is changeable at the change position to access different display data stored therein. The pixel data block is encoded from subtitle data and the loading blocks and pixel data blocks are combined for transmission. The changeover position information can also be used to progress a color-wipe operation.

For multi-standard video data acquisition, a decoder with a register 201 of 24 cells to store 3x8 bits of data is employed. The first byte of the 3 bytes is also connected to the logic device in order to compare the contents of the cell with a given start code. The beginning of the register is byte 3, followed by byte 2 and byte 1. Additionally, a second 8-bit register 202 is connected to register 201 in parallel. The content of byte 3 is also fed to weighted average (8 / 4) decoder 234 and byte 2 to weighted average (8 / 4) decoder 204 . The 4-bit output of each decoder is fed to the 4 bits specified by register 202, respectively.

Recording and reproducing a television signal with a DC shifter prevents compression distortion of a PAL plus television signal. The PAL plus television signal includes a vertical resolution signal for enhancing vertical resolution which vertical resolution signal is included in the same compression blocks as some of the component video signals. Such compression blocks are shifted to a DC set up value so that the signals within those compression blocks do not have varying DC offsets which otherwise could result in compression distortion. Similarly, upon reproduction, the DC set up value is removed after decompression and the original television signal is restored with complete vertical resolution.

Provided is a technique for preventing a viewer's perception of brightness changing significantly when content is switched. A video display device (1) is provided with: a calculating unit (23) which calculates a video feature quantity pertaining to a displayed video; and a mute video display unit which displays a mute video after a first displayed video. The luminance of the mute video correspondsto the value of the video feature quantity pertaining to the first displayed video.