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    • 31. 发明授权
    • Programmable control sequencer of disk controller and method for map
allocation therefor
    • 磁盘控制器的可编程控制定序器及其分配方法
    • US5943682A
    • 1999-08-24
    • US777142
    • 1996-12-30
    • Chan-Geu ParkJung-Il ParkYong-Woo ParkJun-Jin Kong
    • Chan-Geu ParkJung-Il ParkYong-Woo ParkJun-Jin Kong
    • G06F13/00G06F3/06G11B20/12G11B20/18G11B27/10G11B27/11G11B27/30
    • G06F3/0601G11B20/1258G11B27/105G11B27/11G11B27/3027G06F2003/0692G11B20/1833G11B2220/20G11B2220/65
    • An improved programmable control sequencer and a method for its map allocation capable of reducing the size of program RAM used in a disk controller of a magnetic disk drive storage system, thereby efficiently reducing a work load of a microcontroller unit in the disk controller. The map allocation method is performed in a program random access memory having a 32.times.2 byte size of data storage area in the disk controller, the program random access memory being provided with the sequencer map allocation including a branch field, a next address/count field, an output field, a gate field, a field region and a data selection field. The branch field is provided with branch condition or count field enable information. The next address/count field selectively has a next address or a count value according to the branch condition. The output field is usable for testing synchronization outside the programmable control sequencer and the gate field for performing Read/Write gate control and making increase of target sector number and decrease of disk sector transmit count. The field region represents ECC/CRC block and CDR return and the data selection field is usable for comparing data from any data register with data read of the disk, thereby processing the data according to the compared result.
    • 一种改进的可编程控制定序器及其映射分配方法,其能够减小磁盘驱动器存储系统的磁盘控制器中使用的程序RAM的大小,从而有效地降低了磁盘控制器中的微控制器单元的工作负载。 地图分配方法在盘控制器中具有数据存储区域的32×2字节大小的程序随机存取存储器中执行,程序随机存取存储器被提供有定序器映射分配,包括分支字段,下一个地址/计数字段, 输出字段,门字段,字段区域和数据选择字段。 分支域具有分支条件或计数字段使能信息。 下一个地址/计数字段根据分支条件选择性地具有下一​​个地址或计数值。 输出字段可用于测试可编程控制定序器外的同步和用于执行读/写门控制的栅极场,并增加目标扇区号和减少磁盘扇区传输计数。 场区域表示ECC / CRC块和CDR返回,并且数据选择字段可用于将来自任何数据寄存器的数据与盘的数据读取进行比较,从而根据比较结果处理数据。
    • 36. 发明授权
    • Apparatus for measuring bit error ratio using a viterbi decoder
    • 使用维特比解码器测量误码率的装置
    • US5987631A
    • 1999-11-16
    • US944647
    • 1997-10-06
    • Jun-Jin Kong
    • Jun-Jin Kong
    • H03M13/00H03M13/23H03M13/41H03M13/45H04L1/00H04L1/20H04W24/00G06F11/00
    • H04L1/203H03M13/41H03M13/45H04L1/0054H04L1/0059H04L1/0061H04L1/208
    • An apparatus for accurately measuring a bit error ratio by using a viterbi decoder to improve the performance of a communication system that uses cyclic redundancy codes and trellis codes to detect and correct errors. The apparatus generates new cyclic redundancy codes and substitutes them in place of the transmitted cyclic redundancy codes by using decoded data that has been processed by a viterbi decoder. The apparatus then regenerates trellis encoded data by using reconstructed data that contains the new cyclic redundancy codes. Finally, the re-encoded data are compared with the transmitted data to calculate a bit error ratio. The apparatus consists of a viterbi decoding unit, a cyclic redundancy code regeneration unit, a cyclic redundancy code selecting unit, a cyclic redundancy code generating unit, a trellis re-encoding unit, a time delaying unit, a data comparing unit and a bit error ratio measuring unit.
    • 一种用于通过使用维特比解码器来精确地测量误码率的装置,以改善使用循环冗余码和网格码来检测和校正错误的通信系统的性能。 该设备通过使用由维特比解码器处理的解码数据,生成新的循环冗余码并代替发送的循环冗余码。 然后,该装置通过使用包含新的循环冗余码的重构数据来再生网格编码数据。 最后,将重新编码的数据与发送的数据进行比较,以计算误比特率。 该装置由维特比解码单元,循环冗余码再生单元,循环冗余码选择单元,循环冗余码生成单元,网格重编码单元,时间延迟单元,数据比较单元和位错误 比率测量单元。