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)。

    Audio decoder circuit and method of operation
    2.
    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)。

    System decoder circuit with temporary bit storage and method of operation
    3.
    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
    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: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)。

    Method for processing a subband encoded audio data stream
    7.
    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
    9.
    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)。

    System decoder circuit and method of operation
    10.
    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)。