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    Method and apparatus of error handling for video coding using intra block copy mode
    32.
    发明授权
    Method and apparatus of error handling for video coding using intra block copy mode 有权

    公开(公告)号：US10356438B2

    公开(公告)日：2019-07-16

    申请号：US15578191

    申请日：2016-06-03

    Applicant: MEDIATEK INC.

    Inventor： Tzu-Der Chuang ,  Chia-Yun Cheng ,  Han-Liang Chou ,  Ching-Yeh Chen ,  Yu-Chen Sun ,  Yu-Wen Huang

    IPC: H04N19/593 ,  H04N19/563 ,  H04N19/513 ,  H04N19/70

    Abstract: In order to overcome the issue caused by a decoded block vector (BV) pointing to a reference block overlapping with an unavailable area, various methods are disclosed. According to one method, if the reference block overlaps with an unavailable area, the reference pixels in the unavailable area are generated for IntraBC prediction of the current block by padding from neighboring available pixels. The padding can be done in the horizontal direction and then the vertical direction. The padding may also done in the vertical direction first and then horizontal direction. In another method, if the reference block overlaps with an unavailable area, the reference pixels in the unavailable area are generated for IntraBC prediction of the current block by using previous decoded pixels in the unavailable area. A pre-defined value may also be used for the unavailable area.

    Video transmitting system with on-the-fly encoding and on-the-fly delivering and associated video receiving system
    33.
    发明授权
    Video transmitting system with on-the-fly encoding and on-the-fly delivering and associated video receiving system 有权

    公开(公告)号：US10230948B2

    公开(公告)日：2019-03-12

    申请号：US15422425

    申请日：2017-02-01

    Applicant: MEDIATEK INC.

    Inventor： Chia-Yun Cheng ,  Han-Liang Chou ,  Yung-Chang Chang

    IPC: H04N19/10 ,  H04N19/15 ,  H04L1/00 ,  H04N19/423 ,  H04N19/436 ,  H04N19/182

    Abstract: A video transmitting system includes a source buffer, a video encoder, a bitstream buffer, and a transmitting circuit. The source buffer receives pixel data of pixels of a video frame. The video encoder retrieve pixel data of a portion of the pixels of the video frame from the source buffer, and starts encoding the pixel data of the portion of the pixels before pixel data of a last pixel of the video frame is received by the source buffer. The bitstream buffer receives a network abstraction layer (NAL) stream from the video encoder, wherein the NAL stream is generated by encoding the pixel data of the portion of the pixels. The transmitting circuit retrieves the NAL stream from the bitstream buffer, and starts outputting the NAL stream before the pixel data of the last pixel of the video frame is encoded by the video encoder.

    Method and apparatus for entropy coding in image compression
    34.
    发明授权
    Method and apparatus for entropy coding in image compression 有权

    公开(公告)号：US10142629B2

    公开(公告)日：2018-11-27

    申请号：US15386022

    申请日：2016-12-21

    Applicant: MEDIATEK INC.

    Inventor： Tung-Hsing Wu ,  Li-Heng Chen ,  Han-Liang Chou

    IPC: H04N19/112 ,  H04N7/12 ,  H04N19/184 ,  H04N19/13 ,  H04N19/44 ,  H04N19/136

    Abstract: A method and apparatus of image coding including adaptive entropy coding are disclosed. According to this method, input pixels associated with a group of symbols generated from image or video data are received. Maximum bit-depth of the group of symbols is then determined. If the maximum bit-depth of the group of symbols is smaller than a first bit-depth threshold, the group of symbols is encoded or decoded using Golomb-Rice coding. If the maximum bit-depth of the group of symbols is greater than or equal to the first bit-depth threshold, the group of symbols is encoded or decoded using second entropy coding, where the second entropy coding is different from the Golomb-Rice coding. Outputs corresponding to encoded or decoded output associated with the group of symbols are provided. The maximum bit-depth of the group of symbols is signaled at the encoder or recovered at the decoder by parsing the bitstream.

    INTER PREDICTION METHOD WITH CONSTRAINED REFERENCE FRAME ACQUISITION AND ASSOCIATED INTER PREDICTION DEVICE
    39.
    发明申请
    INTER PREDICTION METHOD WITH CONSTRAINED REFERENCE FRAME ACQUISITION AND ASSOCIATED INTER PREDICTION DEVICE 审中-公开
    具有约束参考帧采集的INTER预测方法和相关的帧间预测装置

    公开(公告)号：US20160373763A1

    公开(公告)日：2016-12-22

    申请号：US15145807

    申请日：2016-05-04

    Applicant: MEDIATEK INC.

    Inventor： Tung-Hsing Wu ,  Han-Liang Chou

    IPC: H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/577

    CPC classification number: H04N19/105 ,  H04N19/172 ,  H04N19/31 ,  H04N19/33 ,  H04N19/426 ,  H04N19/46 ,  H04N19/50

    Abstract: An inter prediction method includes performing reference frame acquisition for inter prediction of a first frame in a first frame group to obtain at least one reference frame, and performing the inter prediction of the first frame according to the at least one reference frame. The at least one reference frame used by the inter prediction of the first frame is intentionally constrained to include at least one first reference frame obtained from reconstructed data of at least one second frame in the first frame group. The first frame group has at least one first frame, including the first frame, and the at least one second frame. Frames in the first frame group have a same image content but different resolutions.

    Abstract translation: 帧间预测方法包括对第一帧组中的第一帧进行帧间预测执行参考帧获取以获得至少一个参考帧，以及根据至少一个参考帧执行第一帧的帧间预测。 由第一帧的帧间预测使用的至少一个参考帧有意地被约束为包括从第一帧组中的至少一个第二帧的重建数据获得的至少一个第一参考帧。 第一帧组具有至少一个第一帧，包括第一帧和至少一个第二帧。 第一帧组中的帧具有相同的图像内容，但分辨率不同。

    Methods of Multiple-Slice Coding for Frame Buffer Compression
    40.
    发明申请
    Methods of Multiple-Slice Coding for Frame Buffer Compression 有权
    帧缓冲区压缩的多片段编码方法

    公开(公告)号：US20150187045A1

    公开(公告)日：2015-07-02

    申请号：US14444910

    申请日：2014-07-28

    Applicant: MEDIATEK INC.

    Inventor： Han-Liang Chou ,  Kun-Bin Lee

    IPC: G06T1/60

    CPC classification number: H04N19/189 ,  H04N19/436

    Abstract: Method is disclosed for reducing frame buffer, stream buffer, reconstruction buffer, or latency associated with frame buffer compression in an encoder or decoder with multiple slices of an image frame. The image frame is divided into multiple slices vertically, horizontally or both. One core compressor or decompressor can be used to process two or more slices. The encoding and decoding of two or more slices may be performed in parallel. Instead of encoding an entire slice, the encoder compresses only partial data of one slice before encoding another slice. According to one embodiment, each slice is divided into two or more partitions. The encoder is switched to another slice after encoding one partition of one slice. In another embodiment, the encoder is switched to another slice based the information related to the coding status. The decoding order may be same as the encoding order.

    Abstract translation: 公开了用于在具有多个图像帧的编码器或解码器中减少帧缓冲器，流缓冲器，重建缓冲器或与帧缓冲器压缩相关联的延迟的方法。 图像帧垂直，水平或两者分为多个片段。 一个核心压缩器或解压缩器可用于处理两个或多个切片。 两个或多个切片的编码和解码可以并行执行。 代替对整个片段进行编码，编码器仅在编码另一片之前仅压缩一片的部分数据。 根据一个实施例，每个切片被分成两个或更多个分区。 在编码一个分片的一个分区后，编码器切换到另一个分片。 在另一个实施例中，编码器基于与编码状态相关的信息被切换到另一切片。 解码顺序可以与编码顺序相同。

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