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1. 发明授权

US5598352A Method and apparatus for audio and video synchronizing in MPEG playback systems 失效
标题翻译：用于MPEG播放系统中音频和视频同步的方法和装置
公开(公告)号：US5598352A
公开(公告)日：1997-01-28
申请号：US358611
申请日：1994-12-14
申请人： Mark A. Rosenau , Daryl Sartain , Daniel T. Daum , Jeffrey G. Ort
发明人： Mark A. Rosenau , Daryl Sartain , Daniel T. Daum , Jeffrey G. Ort
IPC分类号： G06F3/16 , G06F3/01 , G06T9/00 , G09G5/00 , G09G5/18 , G09G5/36 , G09G5/393 , G10K15/04 , G11B20/00 , G11B20/10 , G11B27/10 , G11B27/30 , H04N5/775 , H04N5/85 , H04N7/04 , H04N7/045 , H04N7/26 , H04N7/46 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , H04N9/82 , H04N9/87 , H04N7/12
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 substantially synchronizing the display of video images with audio playback. An audio presentation time stamp (APTS) is detected in the compressed/coded audio data stream in the integrated system and video decoder and stored in a data latch. The compressed/coded audio data stream is fed to an audio decoder which decodes/decompresses the audio data and outputs and audio signal. The audio decoder detects when audio data corresponding to an APTS had been output and sets a corresponding flag. The flag indicates to the integrated system and video decoder that a corresponding audio segment had been decoded/decompressed and output. The integrated system and video decoder then synchronizes the video output with the audio output by repeating or skipping frames of video data.
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基本上同步。在集成系统和视频解码器中的压缩/编码音频数据流中检测音频呈现时间戳（APTS），并存储在数据锁存器中。压缩/编码的音频数据流被馈送到音频解码器，音频解码器解码/解压缩音频数据和输出和音频信号。音频解码器检测与APTS相对应的音频数据是否已被输出并设置相应的标志。该标志向集成系统和视频解码器指示对应的音频段已被解码/解压缩并输出。然后，集成系统和视频解码器通过重复或跳过视频数据帧来同步视频输出与音频输出。

2. 发明授权

US07079807B1 Substantially integrated digital network and broadcast radio method and apparatus 有权
标题翻译：基本集成的数字网络和广播无线电方法和装置
公开(公告)号：US07079807B1
公开(公告)日：2006-07-18
申请号：US09457728
申请日：1999-12-10
申请人： Daniel T. Daum , George E. Scott, III
发明人： Daniel T. Daum , George E. Scott, III
IPC分类号： H04H7/00
CPC分类号： H04H60/87 , H04H40/18 , H04H60/82
摘要： A multimedia system which substantially integrates analog functions normally found in consumer radios (radio frequency tuner functions, volume functions), and information streams from a digital network in a single design. The system may include an Ethernet interface, central processing unit, memory, local storage device, analog to digital converter, digital to analog converter, audio output speakers, microphone, display controller, liquid crystal display panel, user interface logic, controls for tuning streams, analog and digital radio frequency tuner, and an analog storage device. The system may generate analog signals for audible reproduction. The source of audio signals may be configured in real time by the user. The hardware implementation allows for selection of broadcast radio or digital network streams such that hardware signals indicating which broadcast radio or digital stream to play from are fed to a hardware circuit which determines which stream is sent to an audio output device.
摘要翻译：一种多媒体系统，其基本上集成了在单一设计中通常在消费者无线电（射频调谐器功能，音量功能）中发现的模拟功能和来自数字网络的信息流。该系统可以包括以太网接口，中央处理单元，存储器，本地存储设备，模数转换器，数模转换器，音频输出扬声器，麦克风，显示控制器，液晶显示面板，用户界面逻辑，用于调谐流的控制，模拟和数字射频调谐器以及模拟存储设备。该系统可以产生用于可听再现的模拟信号。音频信号源可以由用户实时配置。硬件实现允许选择广播无线电或数字网络流，使得指示要播放的广播无线电或数字流的硬件信号被馈送到确定哪个流被发送到音频输出设备的硬件电路。

3. 发明授权

US5815634A Stream synchronization method and apparatus for MPEG playback system 失效
标题翻译：用于MPEG播放系统的流同步方法和装置
公开(公告)号：US5815634A
公开(公告)日：1998-09-29
申请号：US358610
申请日：1994-12-14
申请人： Daniel T. Daum , Mark A. Rosenau , Jeffrey G. Ort , Richard Chang , Chih-Ta Sung , Tzoyao Chan
发明人： Daniel T. Daum , Mark A. Rosenau , Jeffrey G. Ort , Richard Chang , Chih-Ta Sung , Tzoyao Chan
IPC分类号： G06F3/16 , G06F3/01 , G06T9/00 , G09G5/00 , G09G5/18 , G09G5/36 , G09G5/393 , G10K15/04 , G11B20/00 , G11B20/10 , G11B27/10 , G11B27/30 , H04N5/775 , H04N5/85 , H04N7/04 , H04N7/045 , H04N7/26 , H04N7/46 , H04N7/50 , H04N9/804 , H04N9/806 , H04N9/82 , H04N9/87 , H04N21/2368 , H04N21/4143 , H04N21/43 , H04N21/434 , H04N5/928 , H04N7/12
CPC分类号： H04N9/8063 , 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 , H04N21/4307 , H04N21/4341 , H04N9/8042 , H04N9/8216 , G11B2220/213 , G11B2220/2545 , H04N21/4305 , 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 substantially synchronizing the display of video images with audio playback. In addition, a step control is provided to allow for viewing of video images on a frame-by frame basis or to freeze or play video in slow motion. When step control is activated, audio output is muted. Audio data corresponding to displayed video is transmitted to the muted audio decoder. An internal system clock may be suppressed to the system clock counter. An external CPU may provide system clock start times corresponding to video frames to be displayed. The external CPU may increment the system clock counter by a an amount corresponding to the difference between a successive frame or number of frames. When nominal playback is resumes, the audio and video data streams are substantially in synchronization.
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基本上同步。此外，提供了步进控制以允许逐帧观看视频图像或者以慢动作来冻结或播放视频。当步进控制激活时，音频输出静音。对应于显示的视频的音频数据被发送到静音音频解码器。内部系统时钟可能被抑制到系统时钟计数器。外部CPU可以提供对应于要显示的视频帧的系统时钟开始时间。外部CPU可以将系统时钟计数器递增与连续帧或帧数之间的差相对应的量。当恢复标称重放时，音频和视频数据流基本上同步。

4. 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。

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