公开(公告)号：US20090178543A1

公开(公告)日：2009-07-16

申请号：US12103926

申请日：2008-04-16

Applicant: Kyung Ho LEE

Inventor： Kyung Ho LEE

IPC: G10H1/36

CPC classification number: G10H1/368 ,  G10H2250/041 ,  H04N21/2368 ,  H04N21/4307 ,  H04N21/4341 ,  H04N21/439

Abstract: There is provided a music accompaniment apparatus that is connected to at least one external device to reproduce an audio or video signal, the music accompaniment apparatus including: an audio input section for inputting an external audio signal; an audio signal processing section for processing an audio signal including an accompaniment signal internally provided and an external audio signal input through the audio input section, and externally outputting the processed audio signal; a video signal processing section for processing a video signal including a caption signal, and externally outputting the processed video signal; a time delay calculating section for calculating the difference between a transmission time of a check signal to the at least one external device and a reception time of the check signal from the at least one external device to compute a time delay representing a delay of the audio or video signal for the at least one external device; and a control section for controlling the whole operation of the music accompaniment apparatus including generation and transmission/reception of the check signal, and controlling the transmission time of the video or audio signal in correspondence to the time delay. The present invention guarantees an efficient use of a digital device having a time delay as connected to the music accompaniment apparatus.

Abstract translation: 提供了连接到至少一个外部设备以再现音频或视频信号的音乐伴奏装置，该音乐伴奏装置包括：音频输入部分，用于输入外部音频信号; 音频信号处理部分，用于处理包括内部提供的伴奏信号的音频信号和通过音频输入部分输入的外部音频信号，并从外部输出处理过的音频信号; 视频信号处理部分，用于处理包括字幕信号的视频信号，并从外部输出处理的视频信号; 时间延迟计算部分，用于计算检查信号与至少一个外部设备的传输时间与来自至少一个外部设备的检查信号的接收时间之间的差异，以计算表示音频延迟的时间延迟 或所述至少一个外部设备的视频信号; 以及控制部分，用于控制包括校验信号的生成和发送/接收的音乐伴奏装置的整体操作，并且控制与时间延迟对应的视频或音频信号的传输时间。 本发明保证了与音乐伴奏装置连接的具有时间延迟的数字装置的有效使用。