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    • 7. 发明授权
    • Digital communication system with integral messaging and method therefor
    • 具有集成信息的数字通信系统及其方法
    • US6122271A
    • 2000-09-19
    • US888552
    • 1997-07-07
    • Oliver F. McDonaldChin Pan Wong
    • Oliver F. McDonaldChin Pan Wong
    • H04J3/14H04J3/17H04J3/00
    • H04J3/17H04J3/14
    • A digital communications system (10) includes a transmitting apparatus (12) and a receiving apparatus (14). In addition to a primary information signal (16), messages and control signals (24) are communicated for use by the equipment. To avoid the use of dedicated frequency spectrum, control channel time slots, or the degradation of forward error correction of the encoded information signal, the transmitting apparatus determines the occurrence of a silence period (28) in the information signal, then inserts the message or control signal information into the silence period. The resulting composite signal is transmitted to the receiving apparatus where message and control information is removed for use by the receiving equipment, leaving the information signal intact.
    • 数字通信系统(10)包括发送装置(12)和接收装置(14)。 除了主信息信号(16)之外,信息和控制信号(24)被传送以供设备使用。 为了避免使用专用频谱,控制信道时隙或编码信息信号的前向纠错的劣化,发送装置确定信息信号中的静默期(28)的发生,然后插入消息或 控制信号信息进入沉默期。 所得到的复合信号被发送到接收设备,其中消息和控制信息被去除以供接收设备使用,使信息信号保持不变。
    • 9. 发明授权
    • Constellation multiplexed inband secondary channel for voiceband modem
    • 用于语音频带调制解调器的星座多路复用带内辅助信道
    • US4891806A
    • 1990-01-02
    • US98547
    • 1987-09-18
    • Luis V. FariasVadavalli G. KrishnanChin-Pan Wong
    • Luis V. FariasVadavalli G. KrishnanChin-Pan Wong
    • H04B17/00H04L1/20H04L27/34
    • H04L27/3477H04L1/20H04L27/3472
    • A method of providing an inband secondary channel for a data modem includes encoding the main channel data using a convolutional encoder so that main channel data symbols are selected from a first constellation. The secondary channel data are encoded using a differential encoder and secondary channel data symbols are selected from a second constellation. The transmission of the main channel symbols takes place during 48 frames of a 49 frame master frame. The differentially encoded secondary channel data symbols are transmitted during the remaining frame. The symbols of the secondary channel constellation are selected to have a higher average energy than those of the main channel data so that the secondary channel is easily detected and may be used to obtain frame synchronization for the modem after brief dropouts without having to retrain the modem.
    • 为数据调制解调器提供带内二次信道的方法包括使用卷积编码器对主信道数据进行编码,以便从第一星座选择主信道数据符号。 使用差分编码器对次要信道数据进行编码,并且从第二星座选择次要信道数据符号。 主通道符号的传输在49帧主帧的48帧期间进行。 在剩余帧期间发送差分编码的辅助信道数据符号。 选择次级信道星座的符号具有比主信道数据更高的平均能量,使得辅助信道容易被检测,并且可以用于在短暂丢失之后获得调制解调器的帧同步,而不必重新调制调制解调器 。
    • 10. 发明申请
    • WAFER BOX CONVEYER
    • 滚筒输送机
    • US20130257001A1
    • 2013-10-03
    • US13488757
    • 2012-06-05
    • Yung-Chin PAN
    • Yung-Chin PAN
    • B62B3/10
    • H01L21/67724B62B3/04B62B2203/10B62B2203/44H01L21/6773
    • The wafer box conveyer includes a chassis, a transverse moving mechanism, a longitudinal moving mechanism, a loading mechanism and a shock reduction mechanism. The chassis includes a frame and a plurality of wheels mounted under the frame. The transverse moving mechanism is movably connected to the frame. The longitudinal moving mechanism is movably connected to the transverse moving mechanism. A moving direction of the longitudinal moving mechanism is perpendicular to that of the transverse moving mechanism. The loading mechanism includes at least one tray for a wafer box. The shock reduction mechanism is disposed between the at least one tray and the frame for absorbing a load of the tray.
    • 晶片盒输送机包括底架,横向移动机构,纵向移动机构,装载机构和减震机构。 底盘包括安装在框架下方的框架和多个轮子。 横向移动机构可移动地连接到框架。 纵向移动机构可移动地连接到横向移动机构。 纵向移动机构的移动方向垂直于横向移动机构的移动方向。 装载机构包括用于晶片盒的至少一个托盘。 减震机构设置在至少一个托盘和框架之间,用于吸收托盘的载荷。