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
    • 1. 发明申请
    • DUAL BUS COMMUNICATION SYSTEM
    • 双总线通信系统
    • WO1992022969A1
    • 1992-12-23
    • PCT/GB1992000987
    • 1992-06-01
    • HEWLETT PACKARD COMPANYWATSON, Gregory, Charles, Adam
    • HEWLETT PACKARD COMPANY
    • H04L12/40
    • H04L12/407
    • A communications system has a plurality of stations (S1, S2...Sn) interconnected by a pair of uni-directional, oppositely-directed signal paths (A, B). For transmitting data down one path (A), frames are passed down the path (A) and each station (S1, S2...Sn) can write a packet of data to any frame which is empty. The stations (S1, S2...Sn) are arranged to operate in cycles in each of which a station can transmit up to a given number of packets. The stations (S1, S2...Sn) are operative to cause the frames to present a reset-request indication when all stations so far passed have completed packet writing in their current cycles. When a tail station (Sn) receives this indication, it knows all stations have finished their cycles and it transmits a reset signal on the other path (B) to initiate new station cycle. In order to increase the overall efficiency of the system in cases where only a single station wishes to transmit, each station is arranged to propagate a reset-request indication when starting a new cycle as well as upon cycle completion and to remember if any resets are received during the packet writing phase of its cycle.