会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Optical disk player having multidomain memory for storing demodulated,
error-corrected and descrambled data
    • 具有用于存储解调,纠错和解扰数据的多域存储器的光盘播放器
    • US6072755A
    • 2000-06-06
    • US882231
    • 1997-06-25
    • Byung-Jun KimJae-Seong ShimChan-Dong Cho
    • Byung-Jun KimJae-Seong ShimChan-Dong Cho
    • H04N5/85G11B20/10G11B20/18G11B27/10H04N5/907H04N5/937H04N9/804H04N9/806G11B17/22
    • G11B20/10527H04N9/8042G11B20/18H04N5/85H04N9/8063
    • A device for controlling a multidomain memory of an optical disk player which performs demodulation, error correction and descrambling for information data reproduced from an optical disk, and transmits data descrambled to an audio/video decoder or ROM decoder. The device for controlling the multidomain memory includes a memory for reading or writing data modulated, error-corrected or descrambled by the disk player, the memory including a plurality of units each of which has a characteristic number; a demodulation address generator for counting a clock which latches the demodulated data; an error correction address generator for generating an address signal for reading data to be error-corrected from the memory; a descramble address generator for generating an address signal for storing the descrambled data into the memory; a record/reproduction controller for generating signals required for accessing the memory in order to record or reproduce data; a data output address generator for generating an address signal for reading data to be transmitted from the memory when a data transmission request signal is received from the audio/video decoder or the ROM decoder; and a memory state controller for judging whether a memory state is in overflow, underflow or empty by comparing the addresses generated from the address generators with a predetermined critical value, so as to command the record/reproduction controller not to record any more, or to generate a signal indicating the memory state.
    • 一种用于控制光盘播放器的多域存储器的设备,其对从光盘再现的信息数据进行解调,纠错和解扰,并且将解扰频的数据发送到音频/视频解码器或ROM解码器。 用于控制多域存储器的装置包括用于读取或写入由盘播放器调制,纠错或解扰的数据的存储器,所述存储器包括多个单元,每个单元具有特征号; 解调地址发生器,用于对锁存解调数据的时钟进行计数; 纠错地址发生器,用于产生用于从存储器读出要纠错的数据的地址信号; 解扰地址发生器,用于产生用于将解扰数据存储到存储器中的地址信号; 用于产生访问存储器以便记录或再现数据所需的信号的记录/再现控制器; 数据输出地址发生器,用于当从音频/视频解码器或ROM解码器接收到数据发送请求信号时,生成用于读取要从存储器发送的数据的地址信号; 以及存储器状态控制器,用于通过将从地址发生器产生的地址与预定临界值进行比较来判断存储器状态是否处于溢出,下溢或空白,以便命令记录/再现控制器不再记录,或者 产生指示存储器状态的信号。
    • 10. 发明授权
    • Apparatus and method for demodulating signal
    • 用于解调信号的装置和方法
    • US07317766B2
    • 2008-01-08
    • US10446641
    • 2003-05-28
    • Ki-hyun KimSung-hyu HanIn-sik ParkJae-Seong Shim
    • Ki-hyun KimSung-hyu HanIn-sik ParkJae-Seong Shim
    • H03K9/00H04L27/00
    • H03M5/145G11B20/1488
    • An apparatus for and a method of signal demodulation which reduces a number of calculations required for demodulating an M-bit codeword which has been modulated from an N-bit codeword. Probability data for each bit of the M-bit codeword is tested to determine if the probability data indicates a high reliability of being either a one or a zero. Bits having the high reliability are compared with corresponding bits in each of a plurality of reference codewords and the codewords having bits which match the corresponding bits having the high reliability are used along with the probability data to calculate a probability of each bit of the N-bit codeword. As a number of bits having the high reliability increases, a number of calculations required to calculate the probability of each bit of the N-bit codeword decreases.
    • 一种用于信号解调的装置和方法,其减少了从N比特码字调制的M位码字的解调所需的计算数量。 测试M比特码字的每个比特的概率数据,以确定概率数据是否表示是一个或一个零的高可靠性。 将具有高可靠性的比特与多个参考码字中的每一个中的相应比特进行比较,并且与概率数据一起使用具有与具有高可靠性的相应比特匹配的比特的码字,以计算N比特的每个比特的概率, 位码字。 随着具有高可靠性的多个比特数增加,计算N比特码字的每个比特的概率所需的计算量减少。