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11. 发明授权

US06952621B1 Single-chip audio circuits, methods, and systems using the same 有权
标题翻译：单芯片音频电路，方法和使用相同的系统
公开(公告)号：US06952621B1
公开(公告)日：2005-10-04
申请号：US09717407
申请日：2000-11-20
申请人： Ronald D. Malcolm, Jr. , Jeff Klaas , Mark Gentry , Phillip Matthews
发明人： Ronald D. Malcolm, Jr. , Jeff Klaas , Mark Gentry , Phillip Matthews
IPC分类号： G06F3/16 , H03L3/00 , H04H60/04 , G06F17/00 , H04B1/00
CPC分类号： H04H60/04 , G06F3/162 , H03L3/00 , Y02D70/168
摘要： A single chip audio system 100 includes a bus interface 101, digital to analog converters 110, an analog mixer 115, and analog spatial enhancement circuitry 7500. Digital to analog converters 110 convert digital audio data received through bus interface 101 into analog signals. Analog mixer 115 mixes signals received from digital to analog converters 110 with an analog signal received from an external source. Analog spatial enhancement circuitry 7500 enhances first and second mixed analog signals output from analog mixer 115.
摘要翻译：单芯片音频系统100包括总线接口101，数模转换器110，模拟混频器115和模拟空间增强电路7500.数模转换器110将通过总线接口101接收的数字音频数据转换为模拟信号。模拟混频器115将从数模转换器110接收的信号与从外部源接收的模拟信号进行混频。模拟空间增强电路7500增强了从模拟混频器115输出的第一和第二混合模拟信号。

12. 发明授权

US06314330B1 Single-chip audio system power reduction circuitry and methods 失效
标题翻译：单芯片音频系统功率降低电路及方法
公开(公告)号：US06314330B1
公开(公告)日：2001-11-06
申请号：US09031116
申请日：1998-02-26
申请人： Phillip Matthews
发明人： Phillip Matthews
IPC分类号： G06F1700
CPC分类号： H04H60/04 , G06F3/162 , H03L3/00 , Y02D70/168
摘要： An audio system 100 includes digital-to-analog converters 110 having left and right paths for converting received left and right streams of digital audio data and a plurality of analog data ports for receiving left and right channel streams of analog audio data. Mixer 115 has left and right paths for selectively mixing left and right channel data passed from converters 110 and left and right channel data passed from the analog data ports. Muting circuitry is also provided for selectively muting said right and left channel data to be passed to mixer 115 from converters 110. Circuitry is also included for idling a selected one of the left and right paths of mixer 115 when selected data path to mixer 115 is muted.
摘要翻译：音频系统100包括数模转换器110，其具有用于转换接收到的左和右数字音频数据流的左右路径，以及用于接收模拟音频数据的左和右声道流的多个模拟数据端口。混频器115具有用于选择性地混合从转换器110传递的左和右声道数据以及从模拟数据端口传递的左和右声道数据的左右路径。还提供了静音电路用于选择性地将要传递到混频器115的所述右声道数据和左声道数据从转换器110进行静音。当选择的混频器115的数据路径为混频器115时，还包括用于空闲混合器115左右路径中所选择的一个的电路静音

13. 发明授权

US06373954B1 Single-chip audio circuitry, method, and systems using the same 失效
标题翻译：单芯片音频电路，方法和使用它的系统
公开(公告)号：US06373954B1
公开(公告)日：2002-04-16
申请号：US08949563
申请日：1997-10-14
申请人： Ronald D. Malcolm, Jr. , Jeff Klaas , Mark Gentry , Phillip Matthews
发明人： Ronald D. Malcolm, Jr. , Jeff Klaas , Mark Gentry , Phillip Matthews
IPC分类号： H04B100
CPC分类号： H04H60/04 , G06F3/162 , H03L3/00 , Y02D70/168
摘要： A single chip audio system 100 includes a bus interface 101, digital to analog converters 110, an analog mixer 115, and analog spatial enhancement circuitry 7500. Digital to analog converters 110 convert digital audio data received through bus interface 101 into analog signals. Analog mixer 115 mixes signals received from digital to analog converters 110 with an analog signal received from an external source. Analog spatial enhancement circuitry 7500 enhances first and second mixed analog signals output from analog mixer 115.
摘要翻译：单芯片音频系统100包括总线接口101，数模转换器110，模拟混频器115和模拟空间增强电路7500.数模转换器110将通过总线接口101接收的数字音频数据转换为模拟信号。模拟混频器115将从数模转换器110接收的信号与从外部源接收的模拟信号进行混频。模拟空间增强电路7500增强了从模拟混频器115输出的第一和第二混合模拟信号。

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