中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.007 seconds)

    MODEM CONTROL METHOD
    2.
    发明申请
    MODEM CONTROL METHOD 审中-公开
    调制解调器控制方法

    公开(公告)号：WO1998026581A1

    公开(公告)日：1998-06-18

    申请号：PCT/JP1997004556

    申请日：1997-12-11

    Applicant: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC. ,  NOMA, Nobuhiko ,  SAKAI, Tsukasa ,  TAKAGI, Genzou

    Inventor： MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC.

    IPC: H04N01/32

    CPC classification number: H04N1/33346 ,  H04L5/14 ,  H04N1/32619 ,  H04N1/33323 ,  H04N1/33361 ,  H04N1/33369 ,  H04N1/33392 ,  H04N2201/33364 ,  H04N2201/33371

    Abstract: Preprocessing of picture signal communication is carried out on a control channel of a full-duplex modem. In transition of the picture signal communication to a primary channel of a half-duplex modem, when a called party confirms that 40 bits or more of all-'1' signals have been received from a calling party, a transmission carrier is stopped, and receiving of the all-one signals is restarted after the lapse of a predetermined time period. When the end of the all-'1' signals is confirmed, the picture signal communication is switched to the primary channel.

    Abstract translation: 图像信号通信的预处理在全双工调制解调器的控制信道上进行。 在将图像信号通信转换为半双工调制解调器的主信道的过程中，当被叫方确认已经从主叫方接收到全“1”信号的40比特或更多时，传输载波被停止，并且 在经过预定时间段之后重新开始接收全信号。 当全'1'信号的结束被确认时，图像信号通信被切换到主信道。

    METHOD FOR CONTROLLING MODEM
    4.
    发明申请
    METHOD FOR CONTROLLING MODEM 审中-公开
    控制调制解调器的方法

    公开(公告)号：WO1998027716A1

    公开(公告)日：1998-06-25

    申请号：PCT/JP1997004629

    申请日：1997-12-16

    Applicant: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC. ,  NOMA, Nobuhiko ,  ARAKI, Mitsuhiro

    Inventor： MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC.

    IPC: H04N01/32

    CPC classification number: H04L1/0004 ,  H04L1/001 ,  H04L1/003 ,  H04L5/1446 ,  H04M11/06 ,  H04N1/33323 ,  H04N2201/3335 ,  H04N2201/33371 ,  Y02D50/10

    Abstract: When a MODEM controller detects that the receiving level of probing signals or tone signals having a specific frequency in the phase 2 of a precommunication procedure is lower than a prescribed value, the controller lowers the transmission speed of a control channel to a lower speed of 1,200 bps. When the controller lowers the transmission speed, the controller sets the transmission speed to 1,200 bps by using a prescribed bit in an MPh signal in a communication control procedure and, at the same time, executes communication at the lowered transmission speed by setting such a condition that the communication with the communication equipment on the remote side at a different transmission speed is not permitted by using another bit of the MPh signal and informing the communication equipment on the remote side of the set condition.

    Abstract translation: 当MODEM控制器检测到在通信过程的阶段2中具有特定频率的探测信号或音调信号的接收电平低于规定值时，控制器将控制信道的传输速度降低到较低的速度1,200 BPS。 当控制器降低传输速度时，控制器在通信控制过程中通过使用MPh信号中的指定位将传输速度设置为1,200bps，同时通过设置这样的条件来以降低的传输速度执行通信 通过使用MPh信号的另一位并通知远程侧的通信设备，不允许以不同传输速度与远程侧的通信设备进行通信。

Patent Agency Ranking