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1. 发明授权

US11212479B2 Image and/or video transmission using backscatter devices 有权
公开(公告)号：US11212479B2
公开(公告)日：2021-12-28
申请号：US16603195
申请日：2018-04-06
申请人： University of Washington
发明人： Shyamnath Gollakota , Saman Naderiparizi , Mehrdad Hessar , Vamsi Talla , Joshua R. Smith
IPC分类号： H04N5/40 , H04N7/045 , H04N5/335 , H04N5/44
摘要： Examples described herein include systems, devices, and methods for backscattering carrier signals in accordance with pixel values of an image and/or video. Signals having a property proportionate to pixel values may be converted into a pulse-containing waveform having pulses whose widths and/or duty cycles are determined based on the pixel values. Backscatter transmitters may backscatter a carrier signal in accordance with the pulse-containing waveform to provide the pixel values to a receiver. In this manner, video transmission at low power and/or battery-free operation may be provided.

2. 发明授权

US10965884B2 Head-mounted display, display controlling apparatus, display controlling method, and program 有权
公开(公告)号：US10965884B2
公开(公告)日：2021-03-30
申请号：US16462062
申请日：2017-11-24
申请人： SONY INTERACTIVE ENTERTAINMENT INC.
发明人： Yoshio Miyazaki
IPC分类号： H04N7/18 , H04N5/268 , A63F13/213 , A63F13/26 , A63F13/525 , A63F13/65 , G06F3/01 , H04N7/045 , H04N13/239
摘要： The present invention provides a novel head-mounted display on which a video image received through wireless communication at a predetermined frequency is displayed, a display controlling apparatus, a display controlling method, and a program. A video image receiving section (94) receives a video image from an entertainment apparatus (14) through wireless communication at a predetermined frequency. A display controlling section (96) causes the video image received through the wireless communication at the predetermined frequency to be displayed on a display section of an HMD (12) in the case where it is decided that a user mounts the HMD (12). A display controlling section (96) causes a video image acquired by using a method other than reception in the video image receiving section (94) through the wireless communication at the predetermined frequency to be displayed on the display section of the HMD (12) before the video image received by the video image receiving section (94) through the wireless communication at the predetermined frequency is caused to be displayed on the display section of the HMD (12).

3. 发明授权

US09571804B2 Optical transmission system 有权
标题翻译：光传输系统
公开(公告)号：US09571804B2
公开(公告)日：2017-02-14
申请号：US14886728
申请日：2015-10-19
申请人： Nihon Video System Co., Ltd.
发明人： Kentaro Hashiguchi , Ken Tsuchiya
IPC分类号： H04B10/00 , H04N7/22 , H04B10/2575 , H04N5/38 , H04N7/045
CPC分类号： H04N7/22 , H04B10/25751 , H04N5/38 , H04N7/045
摘要： Provided are an optical transmission system in which one can easily set a video signal cable, and an adapter that can be used in this system. There is provided an adapter for use in an optical transmission system in which an analog video signal or a digital video signal is transmitted between a pair of adapters using light. The adapter includes a first signal determination unit configured to make a determination as to whether a first electrical signal inputted to a common input terminal is an analog video signal or a digital video signal.
摘要翻译：提供了一种光传输系统，其中可以容易地设置视频信号电缆，以及可以在该系统中使用的适配器。提供了一种在光传输系统中使用的适配器，其中模拟视频信号或数字视频信号在使用光的一对适配器之间传输。适配器包括：第一信号确定单元，被配置为确定输入到公共输入端的第一电信号是模拟视频信号还是数字视频信号。

4. 发明申请

US20160150198A1 OPTICAL TRANSMISSION SYSTEM 有权
标题翻译：光传输系统
公开(公告)号：US20160150198A1
公开(公告)日：2016-05-26
申请号：US14886728
申请日：2015-10-19
申请人： Nihon Video System Co., Ltd.
发明人： Kentaro Hashiguchi , Ken Tsuchiya
IPC分类号： H04N7/22 , H04N7/045 , H04B10/2575
CPC分类号： H04N7/22 , H04B10/25751 , H04N5/38 , H04N7/045
摘要： Provided are an optical transmission system in which one can easily set a video signal cable, and an adapter that can be used in this system. There is provided an adapter for use in an optical transmission system in which an analog video signal or a digital video signal is transmitted between a pair of adapters using light. The adapter includes a first signal determination unit configured to make a determination as to whether a first electrical signal inputted to a common input terminal is an analog video signal or a digital video signal.
摘要翻译：提供了一种光传输系统，其中可以容易地设置视频信号电缆，以及可以在该系统中使用的适配器。提供了一种在光传输系统中使用的适配器，其中模拟视频信号或数字视频信号在使用光的一对适配器之间传输。适配器包括：第一信号确定单元，被配置为确定输入到公共输入端的第一电信号是模拟视频信号还是数字视频信号。

5. 发明申请

US20150350595A1 Transform-based methods to transmit the high-definition video 审中-公开
标题翻译：基于变换的方法来传输高清视频
公开(公告)号：US20150350595A1
公开(公告)日：2015-12-03
申请号：US14724622
申请日：2015-05-28
申请人： Shidong Chen
发明人： Shidong Chen
IPC分类号： H04N7/015 , H04N7/045
CPC分类号： H04N7/0155 , H04N7/045 , H04N7/12 , H04N19/00 , H04N19/62 , H04N19/625 , H04N21/00
摘要： The present invention presents the HD video transmission methods, which transmit the HD video into transform domain. In an aspect of the present invention, at the HD video transmitter the HD video is transformed by a multi-dimensional transform. Through the discrete-time continuous-valued or quasi-continuous-valued modulation, the obtained coefficients in transform domain are preferably carried in parallel in a multiple-access channel in time-domain to the HD video receiver.
摘要翻译：本发明提出了将HD视频发送到变换域的HD视频传输方法。在本发明的一个方面，在HD视频发射机中，通过多维变换来转换HD视频。通过离散时间连续值或准连续值调制，所获得的变换域中的系数优选地在时域中的多址信道中并行传送到HD视频接收机。

6. 发明申请

US20050265254A1 Decoder device 失效
标题翻译：解码器设备
公开(公告)号：US20050265254A1
公开(公告)日：2005-12-01
申请号：US11137482
申请日：2005-05-26
申请人： Tetsutaka Yabuta , Kazuhiro Ieda
发明人： Tetsutaka Yabuta , Kazuhiro Ieda
IPC分类号： H04N5/60 , H04N7/04 , H04N7/045 , H04N7/173 , H04N19/00 , H04N19/44 , H04N19/70 , H04N21/438 , H04N21/44 , H04L1/00
CPC分类号： H04N21/2368 , H04N21/4305 , H04N21/4307 , H04N21/4341
摘要： A decoder device is provided which is able to output audio and video in sync without a counter synchronized with a clock reference value. The decoder device retrieves PES and PCR from TS, and decides the timing of an audio output section and a video output section, referring to PTS appended to the PES. A local counter output section counts in a predetermined count-up cycle without an adjustment control on the PCR. A PCR & local-counter list management section generates a table paring up a counter value, when the PCR is received, with the PCR. The audio & video output sections calculate a latency time of an access unit, using both a first difference, which is between a counter value, when PTS is referred to, and the counter value in the table, and of a second difference, which is between PTS of PES and the PCR in the table.
摘要翻译：提供一种解码器装置，其能够同步输出音频和视频而不与时钟参考值同步的计数器。解码器装置从TS检索PES和PCR，并且参考附加到PES的PTS来确定音频输出部分和视频输出部分的定时。本地计数器输出部分以预定的计数递增周期计数，而不对PCR进行调整控制。 PCR和本地计数器列表管理部分在PCR接收PCR时产生计数器值的表格。音频和视频输出部分使用在计数器值与参考PTS之间的第一差异和表中的计数器值之间的第一差异和第二个差异来计算存取单元的等待时间在PES的PTS和PCR之间。

7. 发明授权

US5959684A Method and apparatus for audio-video synchronizing 失效
标题翻译：用于音频 - 视频同步的方法和装置
公开(公告)号：US5959684A
公开(公告)日：1999-09-28
申请号：US901090
申请日：1997-07-28
申请人： Yew-Koon Tan , Gong-san Yu
发明人： Yew-Koon Tan , Gong-san Yu
IPC分类号： H04N5/60 , G09G5/00 , G09G5/12 , G11B27/10 , H04N5/92 , H04N5/93 , H04N7/04 , H04N7/045 , H04N7/26 , H04N21/2368 , H04N21/434 , H04N7/62
CPC分类号： H04N21/4341 , H04N19/42 , H04N19/44 , H04N21/4307
摘要： A method and apparatus for synchronizing the playback of audio and video frames from a program source. The method associates an audio presentation time stamp ("PTS") value with an output audio frame. Selected ones of audio and video data packets include respective audio and video PTS values representing desired playback times of the respective audio and data associated therewith. The selected ones of the audio data packets further include audio frame numbers representing a number of output frames of audio to be played back between the selected ones of the audio data packets. The method comprises the steps of first storing the audio and video PTS values in respective audio and video PTS tables during an audio demultiplexing process. In addition, the audio frame numbers are stored in frame counters in association with respective PTS values during the demultiplexing process. Thereafter, the process sequentially decodes the audio and video input data to produce respective frames of audio and video which are presented to the user. With the presentation of each audio and video frame, the respective audio and video frame counters are selectively decremented. Upon detecting one of the audio frame counters having a zero value, the audio PTS value for that zero value audio frame counter is retrieved. Thereafter, the playback of the audio and video frames is selectively modified so that frames of audio and video are played back in synchronization.
摘要翻译：一种用于使来自程序源的音频和视频帧的重放同步的方法和装置。该方法将音频呈现时间戳（“PTS”）值与输出音频帧相关联。所选择的音频和视频数据分组包括表示与其相关联的相应音频和数据的期望回放时间的相应音频和视频PTS值。所选择的音频数据分组还包括表示在所选择的音频数据分组之间要播放的音频的输出帧数的音频帧号。该方法包括以下步骤：在音频解复用处理期间首先将音频和视频PTS值存储在相应的音频和视频PTS表中。此外，在解复用处理期间，音频帧号与相应的PTS值相关联地存储在帧计数器中。此后，该处理顺序解码音频和视频输入数据，以产生呈现给用户的相应的音频和视频帧。随着每个音频和视频帧的呈现，相应的音频和视频帧计数器被选择性地递减。在检测到具有零值的音频帧计数器之一时，检索该零值音频帧计数器的音频PTS值。此后，选择性地修改音频和视频帧的重放，使得音频和视频帧同步地重放。

8. 发明授权

US5594660A Programmable audio-video synchronization method and apparatus for multimedia systems 失效
标题翻译：用于多媒体系统的可编程音视频同步方法和装置
公开(公告)号：US5594660A
公开(公告)日：1997-01-14
申请号：US316015
申请日：1994-09-30
申请人： Chih-Ta Sung , Tzoyao Chan , Richard Chang , Mark A. Rosenau , Jeffrey G. Ort , Daniel T. Daum , Yuanyuan Sun
发明人： Chih-Ta Sung , Tzoyao Chan , Richard Chang , Mark A. Rosenau , Jeffrey G. Ort , Daniel T. Daum , Yuanyuan Sun
IPC分类号： G06F3/16 , G06T9/00 , G09G5/00 , G09G5/393 , G10K15/04 , G11B20/00 , G11B20/10 , G11B27/10 , G11B27/30 , H04N5/775 , H04N5/85 , H04N7/04 , H04N7/045 , H04N7/52 , H04N9/804 , H04N9/806 , H04N9/82 , H04N9/87 , H04N19/00 , H04N21/2368 , H04N21/4143 , H04N21/43 , H04N21/434 , G06F17/00
CPC分类号： H04N9/8216 , G09G5/393 , G11B20/00007 , G11B20/10527 , G11B27/10 , G11B27/105 , G11B27/3027 , G11B27/3036 , H04N19/132 , H04N19/42 , H04N19/423 , H04N19/427 , H04N19/587 , H04N19/61 , H04N21/4143 , H04N21/4305 , H04N21/4307 , H04N9/8042 , H04N9/8063 , G11B2220/213 , G11B2220/2545 , H04N5/775 , H04N5/85 , H04N9/87
摘要： A multimedia system including an audio/video decoder/decompresser for decoding/decompressing a compressed encoded audio/video data stream to generate video images for display and audio signals for audible reproduction. The multimedia system includes an integrated system and video decoder with an audio/video synchronization circuit for substancially synchronizing the display of video images with audio playback. A method is described for detecting when the playback of audio and the display of video images are out of synchronization. The circuitry includes three programmable registers, a finite state machine and one full adder using an audio presentation time stamp and the video presentation time stamp. The method uses a rounded programmable bias value which is compared with the difference between the video presentation time stamp and the audio presentation time stamps. The difference may included the latency delay of the audio and video display devices to more properly reflect the synchronization status between audio and video. The circuit area used by the circuitry has been minimized by selective rounding or truncation of the audio presentation time stamp and the video presentation time stamp without sacrificing the accuracy or speed of determining the synchronization between audio and video.
摘要翻译：一种多媒体系统，包括音频/视频解码器/解压缩器，用于解码/解压缩压缩的编码音频/视频数据流，以产生用于显示的视频图像和用于可听再现的音频信号。多媒体系统包括具有音频/视频同步电路的集成系统和视频解码器，用于使视频图像的显示与音频回放相互同步。描述了一种用于检测音频的重放和视频图像的显示何时不同步的方法。该电路包括三个可编程寄存器，有限状态机和一个使用音频呈现时间戳和视频呈现时间戳的全加器。该方法使用舍入的可编程偏置值，其与视频呈现时间戳和音频呈现时间戳之间的差进行比较。差异可以包括音频和视频显示设备的延迟延迟以更恰当地反映音频和视频之间的同步状态。通过选择性舍入或截断音频呈现时间戳和视频呈现时间戳，电路所使用的电路区域已经被最小化，而不牺牲确定音频和视频之间的同步的准确性或速度。

9. 发明授权

US5467139A Muting apparatus for a compressed audio/video signal receiver 失效
标题翻译：用于压缩音频/视频信号接收机的静音设备
公开(公告)号：US5467139A
公开(公告)日：1995-11-14
申请号：US245113
申请日：1994-05-17
申请人： Douglas E. Lankford
发明人： Douglas E. Lankford
IPC分类号： H04N5/04 , H04N5/44 , H04N5/60 , H04N5/92 , H04N5/93 , H04N7/04 , H04N7/045 , H04N7/08 , H04N7/081 , H04N7/12 , H04N7/26 , H04N7/52 , H04N7/56 , H04N9/475
CPC分类号： H04N21/4305 , H04N21/4307 , H04N21/4396 , H04N5/04 , H04N5/4401 , H04N5/602 , H04N7/56
摘要： A compressed audio/video, A/V, receiver provides A/V component timing reference signals (PTS's) coincident with reproduction of associated decompressed component signals. Synchronization apparatus generates a function of the difference of occurring component audio and video PTS's. This function, which is indicative of relative audio and video synchronization, is compared with a predetermined threshold value, and a mute control signal is generated when the threshold is exceeded. Muting circuitry, responsive to the control signal disables audio reproduction when the reproduced audio and video component signal timing deviate from mutual synchronization.
摘要翻译：压缩音频/视频A / V接收器提供与相关的解压缩分量信号的再现一致的A / V分量定时参考信号（PTS）。同步装置产生出现的分量音视频PTS的差异的功能。将表示相对音频和视频同步的该功能与预定阈值进行比较，并且当超过阈值时产生静音控制信号。当再现的音频和视频分量信号定时偏离相互同步时，响应于控制信号的静音电路禁止音频再现。

10. 发明授权

US5241538A Transmission apparatus 失效
标题翻译：传动装置
公开(公告)号：US5241538A
公开(公告)日：1993-08-31
申请号：US637649
申请日：1991-01-04
申请人： Ippei Kanno , Seiji Sakashita
发明人： Ippei Kanno , Seiji Sakashita
IPC分类号： H04N7/015 , H04N7/045
CPC分类号： H04N7/015 , H04N7/045
摘要： Satellite transmission sometimes uses a method of modulating by a sub signal a subcarrier with a frequency set higher than that of a main signal and subjecting the main carrier to frequency modulation by the resulting baseband signal. This method is, however, accompanied by a problem of the occurrence of crosstalk from the main signal to the sub signal. This is attributable to the limited band width of the main carrier on the transmission line, allowing a correction signal equal in magnitude but negative in phase to the crosstalk to be easily prepared on the basis of the transmission line amplitude and group-delay frequency responses and the main signal. The crosstalk may be improved if this correction signal is prepared from the main signal on the transmitting side and added to the sub signal to be transmitted or if the correction signal is prepared from the demodulated main signal on the receiving side and added to the demodulated sub signal.

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