公开(公告)号：EP1032152A3

公开(公告)日：2006-06-21

申请号：EP00301167.3

申请日：2000-02-15

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Seymour, James P. ,  Turner, Michael D.

IPC: H04L1/00 ,  G10L19/00 ,  G10L19/14

CPC classification number: H04L1/0046 ,  G10L19/18 ,  H04L1/0061 ,  H04L1/007 ,  H04L1/201

Abstract: A method of insuring the accuracy of transmitted or stored digital data involves the use of a cyclical redundancy check (CRC) code. The method is particularly useful for ensuring the accuracy of frames transmitted between multi-mode vocoders. The method allows a different CRC code to be used for each mode of a transmitting multi-mode vocoder. A receiving multi-mode vocoder checks the CRC code against the CRC coding formulas of the various modes. If the CRC code is satisfied under any one of the modes, the frame is labeled as "good". If the CRC code fails under all the modes, the frame is labeled as "bad". If the bit frame includes bits for indicating the mode of the transmitting multi-mode vocoder, the receiving multi-mode vocoder checks the CRC code against the CRC coding formula for the indicated mode only. If the CRC code passes for the indicated mode, the frame is labeled as "good", otherwise, the frame is labeled as "bad".

Abstract translation: 确保发送或存储的数字数据的准确性的方法涉及使用循环冗余校验（CRC）码。 该方法对于确保在多模式声码器之间传输的帧的精度特别有用。 该方法允许将不同的CRC码用于发送多模式声码器的每个模式。 接收多模式声码器根据各种模式的CRC编码公式检查CRC码。 如果在任何一种模式下满足CRC码，则将该帧标记为“良好”。 如果CRC码在所有模式下都失败，则该帧被标记为“坏”。 如果位帧包括用于指示发送多模式声码器的模式的位，则接收多模式声码器仅针对所指示的模式，根据CRC编码公式检查CRC码。 如果CRC码通过指示模式，则将该帧标记为“良好”，否则该帧被标记为“不良”。

公开(公告)号：EP1032152A2

公开(公告)日：2000-08-30

申请号：EP00301167.3

申请日：2000-02-15

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Seymour, James P. ,  Turner, Michael D.

IPC: H04L1/00

CPC classification number: H04L1/0046 ,  G10L19/18 ,  H04L1/0061 ,  H04L1/007 ,  H04L1/201

Abstract: A method of insuring the accuracy of transmitted or stored digital data involves the use of a cyclical redundancy check (CRC) code. The method is particularly useful for ensuring the accuracy of frames transmitted between multi-mode vocoders. The method allows a different CRC code to be used for each mode of a transmitting multi-mode vocoder. A receiving multi-mode vocoder checks the CRC code against the CRC coding formulas of the various modes. If the CRC code is satisfied under any one of the modes, the frame is labeled as "good". If the CRC code fails under all the modes, the frame is labeled as "bad". If the bit frame includes bits for indicating the mode of the transmitting multi-mode vocoder, the receiving multi-mode vocoder checks the CRC code against the CRC coding formula for the indicated mode only. If the CRC code passes for the indicated mode, the frame is labeled as "good", otherwise, the frame is labeled as "bad".