Integrated audio decoder system and method of operation
    1.
    发明授权
    Integrated audio decoder system and method of operation 失效
    集成音频解码系统及操作方法

    公开(公告)号:US5644310A

    公开(公告)日:1997-07-01

    申请号:US475251

    申请日:1995-06-07

    CPC分类号: H04B1/665 G06T9/004 G06T9/007

    摘要: A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

    摘要翻译: 公开了一种数据处理系统(10),其包括耦合到解码系统(14)的微处理器主机(12)。 主机接口块(18)接收比特流并将比特流传送到系统解码器块(20)。 系统解码器块(20)从比特流中提取适当的数据,并加载输入缓冲器(24)或可选的外部缓冲器(26)。 音频解码器块(28)从输入缓冲器(24)检索数据,并生成比例因子索引,存储在运算单元缓冲器(30)中的每码字值比特和子带样本。 硬件滤波器运算单元块(32)从算术单元缓冲器(30)检索信息,对数据进行去量化,变换和滤波,以产生加载到PCM缓冲器(34)中的PCM输出数据。 PCM缓冲器(34)内的数据由PCM输出块(36)输出到数 - 模转换器(16)。

    System decoder circuit with temporary bit storage and method of operation
    2.
    发明授权
    System decoder circuit with temporary bit storage and method of operation 失效
    具有临时位存储的系统解码电路和操作方法

    公开(公告)号:US5642437A

    公开(公告)日:1997-06-24

    申请号:US54126

    申请日:1993-04-26

    摘要: A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

    摘要翻译: 公开了一种数据处理系统(10),其包括耦合到解码系统(14)的微处理器主机(12)。 主机接口块(18)接收比特流并将比特流传送到系统解码器块(20)。 系统解码器块(20)从比特流中提取适当的数据,并加载输入缓冲器(24)或可选的外部缓冲器(26)。 音频解码器块(28)从输入缓冲器(24)检索数据,并生成比例因子索引,存储在运算单元缓冲器(30)中的每码字值比特和子带样本。 硬件滤波器运算单元块(32)从算术单元缓冲器(30)检索信息,对数据进行去量化,变换和滤波,以产生加载到PCM缓冲器(34)中的PCM输出数据。 PCM缓冲器(34)内的数据由PCM输出块(36)输出到数 - 模转换器(16)。

    Audio decoder circuit and method of operation
    4.
    发明授权
    Audio decoder circuit and method of operation 失效
    音频解码电路及操作方法

    公开(公告)号:US5963596A

    公开(公告)日:1999-10-05

    申请号:US857976

    申请日:1997-05-16

    CPC分类号: H04B1/665 G06T9/004 G06T9/007

    摘要: A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

    摘要翻译: 公开了一种数据处理系统(10),其包括耦合到解码系统(14)的微处理器主机(12)。 主机接口块(18)接收比特流并将比特流传送到系统解码器块(20)。 系统解码器块(20)从比特流中提取适当的数据,并加载输入缓冲器(24)或可选的外部缓冲器(26)。 音频解码器块(28)从输入缓冲器(24)检索数据,并生成比例因子索引,存储在运算单元缓冲器(30)中的每码字值比特和子带样本。 硬件滤波器运算单元块(32)从算术单元缓冲器(30)检索信息,对数据进行去量化,变换和滤波,以产生加载到PCM缓冲器(34)中的PCM输出数据。 PCM缓冲器(34)内的数据由PCM输出块(36)输出到数 - 模转换器(16)。

    Method for processing a subband encoded audio data stream
    5.
    发明授权
    Method for processing a subband encoded audio data stream 失效
    用于处理子带编码音频数据流的方法

    公开(公告)号:US5794181A

    公开(公告)日:1998-08-11

    申请号:US824072

    申请日:1997-03-24

    CPC分类号: H04B1/665 G06T9/004 G06T9/007

    摘要: A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

    摘要翻译: 公开了一种数据处理系统(10),其包括耦合到解码系统(14)的微处理器主机(12)。 主机接口块(18)接收比特流并将比特流传送到系统解码器块(20)。 系统解码器块(20)从比特流中提取适当的数据,并加载输入缓冲器(24)或可选的外部缓冲器(26)。 音频解码器块(28)从输入缓冲器(24)检索数据,并生成比例因子索引,存储在运算单元缓冲器(30)中的每码字值比特和子带样本。 硬件滤波器运算单元块(32)从算术单元缓冲器(30)检索信息,对数据进行去量化,变换和滤波,以产生加载到PCM缓冲器(34)中的PCM输出数据。 PCM缓冲器(34)内的数据由PCM输出块(36)输出到数 - 模转换器(16)。

    System decoder circuit with temporary bit storage and method of operation
    6.
    发明授权
    System decoder circuit with temporary bit storage and method of operation 失效
    具有临时位存储的系统解码电路和操作方法

    公开(公告)号:US5729556A

    公开(公告)日:1998-03-17

    申请号:US54127

    申请日:1993-04-26

    CPC分类号: H04B1/665 G06T9/004 G06T9/007

    摘要: A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

    摘要翻译: 公开了一种数据处理系统(10),其包括耦合到解码系统(14)的微处理器主机(12)。 主机接口块(18)接收比特流并将比特流传送到系统解码器块(20)。 系统解码器块(20)从比特流中提取适当的数据,并加载输入缓冲器(24)或可选的外部缓冲器(26)。 音频解码器块(28)从输入缓冲器(24)检索数据,并生成比例因子索引,存储在运算单元缓冲器(30)中的每码字值比特和子带样本。 硬件滤波器运算单元块(32)从算术单元缓冲器(30)检索信息,对数据进行去量化,变换和滤波,以产生加载到PCM缓冲器(34)中的PCM输出数据。 PCM缓冲器(34)内的数据由PCM输出块(36)输出到数 - 模转换器(16)。

    Audio decoder circuit and method of operation
    7.
    发明授权
    Audio decoder circuit and method of operation 失效
    音频解码电路及操作方法

    公开(公告)号:US5657454A

    公开(公告)日:1997-08-12

    申请号:US477028

    申请日:1995-06-07

    摘要: A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

    摘要翻译: 公开了一种数据处理系统(10),其包括耦合到解码系统(14)的微处理器主机(12)。 主机接口块(18)接收比特流并将比特流传送到系统解码器块(20)。 系统解码器块(20)从比特流中提取适当的数据,并加载输入缓冲器(24)或可选的外部缓冲器(26)。 音频解码器块(28)从输入缓冲器(24)检索数据,并生成比例因子索引,存储在运算单元缓冲器(30)中的每码字值比特和子带样本。 硬件滤波器运算单元块(32)从算术单元缓冲器(30)检索信息,对数据进行去量化,变换和滤波,以产生加载到PCM缓冲器(34)中的PCM输出数据。 PCM缓冲器(34)内的数据由PCM输出块(36)输出到数 - 模转换器(16)。

    System decoder circuit and method of operation
    8.
    发明授权
    System decoder circuit and method of operation 失效
    系统解码电路及操作方法

    公开(公告)号:US5631848A

    公开(公告)日:1997-05-20

    申请号:US486487

    申请日:1995-06-07

    摘要: A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

    摘要翻译: 公开了一种数据处理系统(10),其包括耦合到解码系统(14)的微处理器主机(12)。 主机接口块(18)接收比特流并将比特流传送到系统解码器块(20)。 系统解码器块(20)从比特流中提取适当的数据,并加载输入缓冲器(24)或可选的外部缓冲器(26)。 音频解码器块(28)从输入缓冲器(24)检索数据,并生成比例因子索引,存储在运算单元缓冲器(30)中的每码字值比特和子带样本。 硬件滤波器运算单元块(32)从算术单元缓冲器(30)检索信息,对数据进行去量化,变换和滤波,以产生加载到PCM缓冲器(34)中的PCM输出数据。 PCM缓冲器(34)内的数据由PCM输出块(36)输出到数 - 模转换器(16)。

    Engine driven converter with feedback control
    9.
    发明授权
    Engine driven converter with feedback control 有权
    具有反馈控制的发动机驱动转换器

    公开(公告)号:US07312419B2

    公开(公告)日:2007-12-25

    申请号:US11533624

    申请日:2006-09-20

    IPC分类号: B23K9/10

    CPC分类号: B23K9/0956 B23K9/1006

    摘要: A method and apparatus for welding with an engine driven inverter power supply includes generating an ac output with an engine and generator. The output is rectified and inverted to provide an ac inverter output. The engine is controlled using feedback indicative of a welding output operating parameter. The feedback may also be taken from the inverter or generator, and the generator may be controlled instead of or in addition to the engine. Engine parameters that may be controlled include engine speed, selecting between an idle speed and a run speed, a throttle position, a fuel pump, an injection timer, a fuel to air ratio, fuel consumption and ignition timing. Another aspect of the invention is having the feedback be responsive to one or more of the welding current, welding voltage, welding power, or functions thereof. The feedback may be responsive to the current, voltage, power, ripple and functions thereof. An aux power output is derived directly from the generator and feedback from the aux load is used to determine if the engine should be idling or running at high speed.

    摘要翻译: 一种用发动机驱动的逆变器电源进行焊接的方法和装置,包括用发动机和发电机产生交流输出。 输出整流和反相,提供交流逆变器输出。 使用反馈表示焊接输出操作参数来控制发动机。 也可以从逆变器或发电机获取反馈,并且发动机可以被控制而不是发动机或除了发动机之外。 可以控制的发动机参数包括发动机转速,怠速和运行速度之间的选择,节气门位置,燃料泵,喷射定时器,燃料空气比,燃料消耗和点火正时。 本发明的另一方面是使反馈响应于焊接电流,焊接电压,焊接功率或其功能中的一个或多个。 反馈可以响应于电流,电压,功率,纹波和功能。 辅助功率输出直接来自发电机,来自辅助负载的反馈用于确定发动机是否应空转或高速运行。

    Plasma cutting or arc welding power supply with phase staggered secondary switchers
    10.
    发明授权
    Plasma cutting or arc welding power supply with phase staggered secondary switchers 有权
    等离子切割或电弧焊电源,带相位交错二次切换器

    公开(公告)号:US06300589B1

    公开(公告)日:2001-10-09

    申请号:US09501460

    申请日:2000-02-09

    IPC分类号: B23K1000

    摘要: A power supply, such as a plasma cutting power supply or a welding power supply, that provides an output to a pair of output terminals is disclosed. The power supply includes a source of voltage and a plurality of choppers. The choppers are connected in parallel between the voltage source output terminals. A controller controls the choppers so that they are out-of-phase with respect to each of the other of the plurality of choppers. The choppers preferably include a freewheeling diode, an inductor and a switch. The number of choppers is approximately equal to the ratio of the open circuit voltage to the output load voltage.

    摘要翻译: 公开了一种向一对输出端子提供输出的电源,例如等离子切割电源或焊接电源。 电源包括电压源和多个切断器。 斩波器在电压源输出端子之间并联连接。 控制器控制斩波器,使得它们相对于多个斩波器中的每一个的每一个都是异相的。 切断器优选地包括续流二极管,电感器和开关。 斩波器的数量近似等于开路电压与输出负载电压的比率。