公开(公告)号：US20050063368A1

公开(公告)日：2005-03-24

申请号：US10988807

申请日：2004-11-15

Applicant: Yuriy Reznik

Inventor： Yuriy Reznik

IPC: H04W88/18 ,  H04B1/66

CPC classification number: H04B1/662 ,  G10L19/022 ,  G10L19/04

Abstract: Compression of audio signal data is described herein. In various embodiments, the compression of each unit of the audio signal data includes the employment of a distribution substantially representative of a subblock of residual data of the unit of audio signal data, to reduce the amount of data having to be transmitted to transmit the unit of audio signal data to a recipient.

Abstract translation: 本文描述了音频信号数据的压缩。 在各种实施例中，音频信号数据的每个单元的压缩包括使用基本上代表音频信号数据单元的残余数据的子块的分布，以减少必须发送的数据量以发送单元 的音频信号数据。

公开(公告)号：US20030072370A1

公开(公告)日：2003-04-17

申请号：US10292257

申请日：2002-11-12

Applicant: RealNetworks, Inc.

Inventor： Bernd Girod ,  Staffan Ericsson ,  Yuriy A. Resznik ,  Nikolaus Farber

IPC: H04N007/12

CPC classification number: H04N9/8042 ,  H04N19/105 ,  H04N19/12 ,  H04N19/152 ,  H04N19/172 ,  H04N19/187 ,  H04N19/39 ,  H04N19/51 ,  H04N19/59 ,  H04N19/61 ,  H04N21/23424 ,  H04N21/23439 ,  H04N21/2662 ,  H04N21/6379 ,  H04N21/64769

Abstract: A method for generating a digital motion video sequence at a plurality of bit rates uses a transitional coding source when switching between bitstreams having different bit rates during transmission of a video sequence. The transitional data may be frames coded using reconstructed frames reconstructed for a first bitstream using the characteristics of the second bitstream. These nulllow bit rate insert frames,null or LBIFs, contain the image characteristics of a signal coded at the lower bit rate. With a bitstream having a higher bit rate being periodically coded using an LBIF, a point of image continuity between the two bitstreams is provided. Thus, switching from one bitstream to the other at this point in the video sequence minimizes the production of artifacts caused by differences in bit rate. In another embodiment of the invention, a separate set of transitional data is created, taking the form of nullswitchnull frames, or S-frames. The S-frames are typically the difference between a frame of a first bitstream and a frame of a second bitstream. These frames are inserted into the decoded bitstream during the transition from one bitstream to the other, and compensate for any visual artifacts that might otherwise occur due to the difference in bit rate of the two bitstreams.

Abstract translation: 用于在多个比特率下生成数字运动视频序列的方法在视频序列的传输期间切换具有不同比特率的比特流时使用过渡编码源。 过渡数据可以是使用第二比特流的特征对使用针对第一比特流重建的重构帧进行编码的帧。 这些“低比特率插入帧”或LBIF包含以较低比特率编码的信号的图像特征。 利用具有较高比特率的比特流，使用LBIF周期性地编码，提供两个比特流之间的图像连续性点。 因此，在视频序列中的这一点上，从一个比特流切换到另一个比特流使得由比特率差异引起的伪像的产生最小化。 在本发明的另一实施例中，以“切换”帧或S帧的形式创建单独的一组过渡数据。 S帧通常是第一比特流的帧和第二比特流的帧之间的差。 在从一个比特流到另一比特流的转换期间，这些帧被插入解码的比特流中，并且补偿由于两个比特流的比特率的差异而可能出现的任何视觉伪像。

公开(公告)号：US20230065069A1

公开(公告)日：2023-03-02

申请号：US17458008

申请日：2021-08-26

Applicant: RealNetworks, Inc.

Inventor： Mirko Coric ,  Stefano Melucci ,  Michael J. Bordash

IPC: H04L29/06 ,  H04L12/58 ,  G06F40/253

Abstract: Systems and methods for processing messages to determine if the message is potentially fraudulent. The system determines if a word in the message matches a known fraudulent word or a known safe word and labels the message as potentially fraudulent in response the word matching a known fraudulent word. Otherwise, the system determines a probability that the word is potentially fraudulent based on message context. In response to determining that the probability exceeds a first threshold, the system determines distances for each pair of word/known safe words (e.g., known brands). The system labels the message as potentially fraudulent in response to the distance of a pair exceeding a second threshold. If the message is labeled as potentially fraudulent it is discarded, otherwise it is forwarded towards the destination.

公开(公告)号：US20220157078A1

公开(公告)日：2022-05-19

申请号：US17437764

申请日：2020-04-01

Applicant: REALNETWORKS, INC.

Inventor： Milko BOIC

IPC: G06V40/16 ,  G06V10/74 ,  G06V40/50

Abstract: Technologies are provided herein for adaptively learning and matching modalities of face images. A face image is obtained and a biometric signature is generated of the face image. The biometric signature is compared with a stored biometric signature obtained from data storage. Differences are determined between the biometric signature and the stored biometric signature and compared with a proximity threshold. As a result of the comparison with the proximity threshold, Processor(s) the identity of the person in the face image may be determined or the face image may be stored in data storage in association with the identity of the person.

公开(公告)号：US20220078457A1

公开(公告)日：2022-03-10

申请号：US17419667

申请日：2019-01-02

Applicant: REALNETWORKS, INC.

Inventor： Le SHI ,  Chia-Yang TSAI

IPC: H04N19/44 ,  H04N19/154 ,  H04N19/12 ,  H04N19/117 ,  H04N19/82

Abstract: Systems, methods, and articles that improve video playback on various devices by dynamically modifying the operation of a video decoder. The operation of a video decoder is dynamically simplified under certain conditions during video playback to provide higher decoding speeds that require less computing resources. A lossy control module is provided in the decoder that is operative to select different lossy decode levels to be used by the decoder at various detected operating conditions so that the decoding of a video can be dynamically sped up during playback of the video, thereby reducing or eliminating jittering or delayed playback

公开(公告)号：US10997396B2

公开(公告)日：2021-05-04

申请号：US16377108

申请日：2019-04-05

Applicant: RealNetworks, Inc.

Inventor： Milko Boic

IPC: G06K9/00

Abstract: Technologies are provided for assessing liveness of a subject presented to a set of one or more cameras. A pair of face images captured during a first time period are respectively obtained from a first and a second camera. Information regarding each face image of the pair of face images is compared with each other to determine whether the pair of face images are consistent with each other. A third face image captured during a second time period is obtained from the first camera. A first face image of the pair of face images and the third face image are assessed to determine the presence of a particular variance between the first face image and the third face image. A result is provided regarding liveness of the subject presented based on the presence of the particular variance and the determination of consistency between the pair of face images.

公开(公告)号：US10218974B2

公开(公告)日：2019-02-26

申请号：US15562811

申请日：2015-03-31

Applicant: REALNETWORKS, INC.

Inventor： Chia-Yang Tsai ,  Wenpeng Ding ,  Gang Wu

IPC: H04N19/122 ,  H04N19/61 ,  H04N19/182 ,  H04N19/18 ,  H04N19/176 ,  H04N19/115 ,  H04N19/50 ,  H04N19/82 ,  H04N19/436

Abstract: A transform block processing procedure wherein a maximum coding-block size and a maximum transform-block size for an unencoded video frame is determined. The unencoded video frame is divided into a plurality of coding-blocks including a first coding-block and the first coding block is divided into at least one prediction block and a plurality of transform blocks. The size of the transform blocks depend at least in part on the size of the coding block and the corresponding prediction blocks. The transform blocks are then encoded, thereby generating a video data payload of an encoded bit-stream. A frame header of the encoded bit-stream, including a maximum coding-block size flag and a maximum-transform-block-size flag, is generated.

公开(公告)号：US20190007696A1

公开(公告)日：2019-01-03

申请号：US16065014

申请日：2015-12-22

Applicant: Chia-Yang TSAI ,  REALNETWORKS, INC.

Inventor： Chia-Yang TSAI ,  Gang WU

IPC: H04N19/52 ,  H04N19/182 ,  H04N19/176 ,  H04N19/105 ,  H04N19/573

Abstract: An unencoded video frame of a sequence of video frames is encoded to generate an encoded bit-stream representative of the unencoded video frame. The encoded bit-stream includes a header portion and a video data payload portion. The unencoded video frame may be divided into an array of prediction blocks, including a first prediction block. A coding mode is selected from a plurality of coding modes for use in encoding the first prediction block. The first prediction block is encoded using the selected coding mode to generate a portion of the video data payload of the encoded bit-stream. A coding mode selection flag is provided in the header portion of the encoded bit-stream, which indicates which coding mode of the plurality of coding modes was selected for encoding the first prediction block.

公开(公告)号：US09165046B2

公开(公告)日：2015-10-20

申请号：US13742169

申请日：2013-01-15

Applicant: RealNetworks, Inc.

Inventor： Stephen M. Blanding

IPC: G06F7/00 ,  G06F17/00 ,  G06F17/30

CPC classification number: G06F17/30575 ,  G06F17/30578 ,  H04L67/1097

Abstract: To synchronize data between a remote database and a local object-graph-and-persistence-framework, a synchronization framework receives messages from the local object-graph-and-persistence-framework indicating that a locally-managed object has been retrieved from a local datastore and instantiated or that the locally-managed object has been created, modified, or deleted. When the synchronization framework determines that the message was instigated by a local user's activity (as opposed to a background synchronization process), the synchronization framework synchronizes the locally-managed object with the remote database.

Abstract translation: 为了在远程数据库和本地对象图和持久性框架之间同步数据，同步框架从本地对象图和持久化框架接收消息，指示已从本地检索到本地管理的对象 数据存储和实例化，或者本地管理的对象已创建，修改或删除。 当同步框架确定消息由本地用户的活动（而不是后台同步过程）引发时，同步框架将本地管理的对象与远程数据库同步。

公开(公告)号：US20140066033A1

公开(公告)日：2014-03-06

申请号：US14079459

申请日：2013-11-13

Applicant: RealNetworks, Inc.

Inventor： Jun LEE ,  Steve VISINTAINER

IPC: H04M3/42 ,  H04W4/16

CPC classification number: H04M3/42017 ,  H04W4/16

Abstract: A ringback tone service may be configured by determining an indication to suggest one or more callers to a user of a mobile-telephony device and obtaining historical call data describing recent calls placed by recent callers to the mobile-telephony device in a recent period of time. After identifying a number of frequent callers for whom no custom ringback tone is currently provisioned, the user is prompted to select from a list of custom ringback tones that are available to provision for incoming calls from the frequent caller(s). In some cases, the user may send a message to the caller, allowing the caller to select his or her own custom ringback tone via a user interface provided by a ringback tone-service provider.

Abstract translation: 回铃音服务可以通过确定向移动电话设备的用户建议一个或多个呼叫者的指示，并且在最近一段时间内获得描述最近呼叫者向移动电话设备发出的最近呼叫的历史呼叫数据 。 在识别到当前未配置自定义回铃音的多个频道呼叫者之后，提示用户从可用于从频繁呼叫者拨出来话呼叫的自定义回铃铃列表中进行选择。 在一些情况下，用户可以向呼叫者发送消息，允许呼叫者经由回铃音服务提供商提供的用户界面来选择他或她自己的自定义回铃音。