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1. 发明专利

JP2011061271A Communication system, master unit and slave unit 有权
标题翻译：通信系统，主单元和从单元
公开(公告)号：JP2011061271A
公开(公告)日：2011-03-24
申请号：JP2009205642
申请日：2009-09-07
申请人： Toa Corp , ティーオーエー株式会社
发明人： YAMAMOTO TOSHIHIRO , AZUMA HIROSHI
IPC分类号： H04L12/70
摘要： PROBLEM TO BE SOLVED: To provide: a communication system capable of quickly registering the latest dynamic IP address even when a fault occurs on the master unit side which is to receive the notice of the dynamic IP address; a master unit; and a slave unit. SOLUTION: The communication system 1 includes the master unit 10 and the plurality of slave units 20a, ..., 20n connected through a network 30. Each of the plurality of slave units 20a, ..., 20n periodically notifies the master unit 10 of the acquired dynamic IP address, and when there is no reply transmitted from the master unit 10 in response to the notice, notifies it of the dynamic IP address by changing to a time interval shorter than a periodic time interval. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供：即使在接收到动态IP地址的通知的主单元侧发生故障，也能够快速注册最新的动态IP地址的通信系统; 主单位和一个从属单元。解决方案：通信系统1包括通过网络30连接的主单元10和多个从单元20a，...，20n。多个从单元20a，...，20n中的每一个周期性地通知获取的动态IP地址的主单元10，并且当响应于通知没有从主单元10发送的应答时，通过改变到比周期时间间隔短的时间间隔来通知动态IP地址。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2006339802A Conference system 审中-公开
标题翻译：会议系统
公开(公告)号：JP2006339802A
公开(公告)日：2006-12-14
申请号：JP2005159488
申请日：2005-05-31
申请人： Toa Corp , ティーオーエー株式会社
发明人： OKAMOTO RYOSUKE , AZUMA HIROSHI , MAEDA KAZUAKI
IPC分类号： H04M3/56
摘要： PROBLEM TO BE SOLVED: To increase the number of participants in a conference without improving the capability of existing servers.
SOLUTION: Servers are divided hierarchically into an upper layer server 2c and lower layer servers 2a, 2b, wherein the server 2a supplies sound signals from terminals 4a through 4d and the server 2b supplies sound signals from terminals 4e through 4g while mixing to the upper layer server 2c. The upper layer server 2c supplies a lower layer mixing sound signal from the lower layer server 2a as an upper layer mixing sound signal to the lower layer server 2b, and supplies a lower layer mixing sound signal from the lower layer server 2b as an upper layer mixing sound signal to the virtual server 2b. The server 2a supplies the mixing signal of an upper layer mixing sound signal from the upper layer server 2c and sound signals from the terminals 4a through 4d excepting its own terminal to the terminals 4a through 4d. It is also true for the server 2b.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：增加会议参与者的数量，而不会提高现有服务器的能力。解决方案：服务器分层划分为上层服务器2c和下层服务器2a，2b，其中服务器2a从端子4a至4d提供声音信号，并且服务器2b从端子4e至4g提供声音信号，同时混合到上层服务器2c。上层服务器2c将作为上层混合声音信号的下层服务器2a的下层混合声音信号提供给下层服务器2b，并且将来自下层服务器2b的下层混合声音信号作为上层将声音信号混合到虚拟服务器2b。服务器2a将来自上层服务器2c的上层混合声音信号的混合信号和来自端子4a至4d的声音信号提供给终端4a至4d，除了其本身的终端之外。对于服务器2b也是如此。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2004153546A Clock signal adjusting device 有权
公开(公告)号：JP2004153546A
公开(公告)日：2004-05-27
申请号：JP2002316214
申请日：2002-10-30
申请人： Toa Corp , ティーオーエー株式会社
发明人： AZUMA HIROSHI
IPC分类号： H04L7/00
摘要： PROBLEM TO BE SOLVED: To make the frequency of a clock signal of a single terminal coincide with the frequency of a clock signal of another terminal. SOLUTION: A plurality of transceivers 4 are connected to a network 2. Each of the transceivers 4 includes a voltage controlled oscillator 23. A transmitter section 24 in predetermined one of these transceivers 4 transmits a signal for adjustment of a clock signal to another transceiver 4 via the network 2. A correction section 36 provided in the other transceiver 4 makes the frequency of the clock signal of the other transceiver 4 coincide with that of the clock signal of the predetermined transceiver 4 based on the clock-signal adjusting signal received via the network 2. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2004153395A Broadcasting apparatus 审中-公开
公开(公告)号：JP2004153395A
公开(公告)日：2004-05-27
申请号：JP2002314167
申请日：2002-10-29
申请人： Toa Corp , ティーオーエー株式会社
发明人： TSUCHIYA SATOSHI , SUZUKI AKIHIRO , YAMADA MITOMI , SUGASE MAKOTO , OKAMOTO RYOSUKE , AZUMA HIROSHI , TAKAHASHI MIHARU
IPC分类号： H04L12/70 , H04L12/717 , H04L12/761 , H04M11/08 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To transmit/receive a sound signal by a plurality of transmitting/receiving apparatus connected with a network without using a server. SOLUTION: Three or more transmitting/receiving apparatuses 2 communicable with the sound signal are connected with a network 4. Each of the transmitting/receiving apparatuses 2 has a database 44 with information indicating which of other transmitting/receiving apparatus should perform communication of the sound signal with the transmitting/receiving apparatuses 2 stored therein. A determining part 42 determines other transmitting/receiving apparatuses at communication destinations, based on the information stored in the database 44. A control unit 40 communicates with the transmitting/receiving apparatuses 2 at the destinations, according to the determination result of the determining part 42. COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2003348186A Method and device for transmitting electronic data 审中-公开
标题翻译：用于发送电子数据的方法和装置
公开(公告)号：JP2003348186A
公开(公告)日：2003-12-05
申请号：JP2002155064
申请日：2002-05-29
申请人： Toa Corp , ティーオーエー株式会社
发明人： AZUMA HIROSHI , SUZUKI AKIHIRO
IPC分类号： H04L12/70 , H04L29/08 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for transmitting electronic data, which improve the reliability of data transfer to realize data transfer of high quality when delivering electronic data to an unspecified reception terminal in real time. SOLUTION: The method includes a step where the presence or the absence of a dropped-out sequence number is discriminated in accordance with the sequence numbers of respective packets received in a reception terminal and a retransmission request signal of a corresponding packet is transmitted together with retransmission request frequency information from the reception terminal to a transmission terminal and a step where it is discriminated whether retransmission should be performed or not on the basis of retransmission request frequency information included in the retransmission request signal received in the transmission terminal and transmission frequency information of the corresponding packet in a transmission history and the corresponding packet is transmitted again. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种用于发送电子数据的方法和装置，其在实时地将电子数据传送到未指定的接收终端时提高数据传输的可靠性，以实现高质量的数据传输。解决方案：该方法包括根据在接收终端中接收的各个分组的序列号来区分丢弃序列号的存在或不存在的步骤，并且发送相应分组的重传请求信号以及从接收终端到发送终端的重发请求频率信息，以及基于在发送终端中接收到的重发请求信号中包含的重发请求频率信息来判断是否应该进行重发的步骤，以及发送频率发送历史中的相应分组的信息和对应的分组被再次发送。版权所有（C）2004，JPO

6. 发明专利

JP2003298543A Broadcast system with prior check function 有权
标题翻译：具有先前检查功能的广播系统
公开(公告)号：JP2003298543A
公开(公告)日：2003-10-17
申请号：JP2002104092
申请日：2002-04-05
申请人： Toa Corp , ティーオーエー株式会社
发明人： AZUMA HIROSHI
IPC分类号： H04H20/12 , H04H20/61 , H04H20/83 , H04H1/12
摘要： PROBLEM TO BE SOLVED: To provide a broadcast system with prior check function capable of confirming broadcast content before broadcasting. SOLUTION: The broadcast system with prior check function 100 capable of confirming broadcast contents before broadcasting is provided with: at least one microphone 10; a storage means 111 for storing broadcast contents picked up by the microphone; a prior check purpose speaker 102 provided to the microphone; and at least broadcast speaker 13 connected to the storage means, and it is possible that the broadcast contents recorded in the storage means are reproduced from the prior check purpose speaker to check the contents in advance and the broadcast contents stored in the storage means are reproduced from the broadcast speaker. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供具有能够在广播之前确认广播内容的先前检查功能的广播系统。解决方案：具有能够在广播之前确认广播内容的具有先前检查功能的广播系统100具有：至少一个麦克风10; 用于存储由麦克风拾取的广播内容的存储装置111; 提供给麦克风的先前检查用的扬声器102; 并且至少连接到存储装置的广播扬声器13，并且可能从先前的检查目的的扬声器再现记录在存储装置中的广播内容以预先检查内容，并且再现存储在存储装置中的广播内容从广播扬声器。版权所有（C）2004，JPO

7. 发明专利

JP2001092726A REDUNDANT DEVICE HAVING A PLURALITY OF MASTER DEVICES AND METHOD FOR SWITCHING BUS CONTROL AUTHORITY 失效
公开(公告)号：JP2001092726A
公开(公告)日：2001-04-06
申请号：JP27002599
申请日：1999-09-24
申请人： TOA CORP
发明人： AZUMA HIROSHI
IPC分类号： G06F13/00 , H04L12/40
摘要： PROBLEM TO BE SOLVED: To use an arbitration line for both failure detection and bus arbitration. SOLUTION: This redundant device connects a plurality of master devices mutually by an arbitration line and operates one of the bus master devices as a bus master. Each master device is provided with a watch dog timer 6 which outputs a state signal displaying the operation state of the master device concerned and a bus arbiter 8 which outputs an arbitration signal of a 1st or 2nd logical state according to whether the master device is operating normally when the master device is a bus master, and detects the change of the logical state of the arbitration signal to operate so as to decide whether the master device can be a new bus master when the master device is not a bus master, and uses the arbitration line for both failure detection and bus arbitration.

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