专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20120259624A1 SYSTEMS, PROCESSES AND INTEGRATED CIRCUITS FOR RATE AND/OR DIVERSITY ADAPTATION FOR PACKET COMMUNICATIONS 有权
标题翻译：用于分组通信的速率和/或多样性适应的系统，过程和集成电路
公开(公告)号：US20120259624A1
公开(公告)日：2012-10-11
申请号：US13493548
申请日：2012-06-11
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： G10L19/04
CPC分类号： G10L13/02 , G10L19/04 , H04L29/06027 , H04L65/608 , H04L65/80 , H04W88/02
摘要： Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
摘要翻译：以大于零千比特/秒的源速率发送实时信息的分组，并且时间或路径或组合的时间/路径分集速率最初为零千比特每秒。这导致服务质量QoS，可选地在发送者或接收者处测量。当QoS处于可接受阈值的不可接受的一侧时，发送方以增加的速率发送分集分组。降低或维持整体传输速率的同时提高分集速度是新的。基于CELP的多描述数据分割在一个分组中发送基本或重要信息加上固定激励的子集，并将另一个分组中的基本或重要信息加上固定激励的互补子集发送。当接收到两个数据包时，仅接收到两个数据包中的一个并且更好的质量，重建会产生可接受的质量。重建提供单个和多个丢失的数据包。

2. 发明授权

US07653045B2 Reconstruction excitation with LPC parameters and long term prediction lags 有权
标题翻译： LPC参数重建激励与长期预测滞后
公开(公告)号：US07653045B2
公开(公告)日：2010-01-26
申请号：US10885911
申请日：2004-07-06
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L12/66
CPC分类号： H04L47/34 , H04B7/06 , H04B7/0671 , H04L1/0007 , H04L1/0018 , H04L29/06027 , H04L47/10 , H04L47/11 , H04L47/2416 , H04L47/283 , H04L47/29 , H04L65/602 , H04L65/80 , H04W28/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n−1)′, [Lost Packet], P(n+2)P(n+1)′, and P(n+3)P(n+2)′, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
摘要翻译：分组网络设备上的媒体提供网络接口，语音传感器以及将语音传感器耦合到网络接口的至少一个集成电路组件。所述至少一个集成电路组件通过分组传输提供媒体，并保持限定具有初级阶段和次级阶段的分组流的重建的比特。次级具有一个或多个线性预测编码参数，长期预测滞后，奇偶校验以及自适应和固定码本增益。分组流具有单个分组丢失的实例，并且重构包括接收由P（n）P（n-1）'，[丢包]，P（n + 2）P（n + 1）表示的分组序列， '和P（n + 3）P（n + 2）'，获得来自次级信息的线性预测编码参数，长期预测滞后，奇偶校验和自适应和固定码本增益中的一个或多个的信息，以及使用所接收的所述分组序列来执行激励重构。

3. 发明授权

US06765904B1 Packet networks 有权
标题翻译：分组网络
公开(公告)号：US06765904B1
公开(公告)日：2004-07-20
申请号：US09461159
申请日：1999-12-14
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L1256
CPC分类号： H04L47/34 , H04B7/06 , H04B7/0671 , H04L1/0007 , H04L1/0018 , H04L29/06027 , H04L47/10 , H04L47/11 , H04L47/2416 , H04L47/283 , H04L47/29 , H04L65/602 , H04L65/80 , H04W28/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A process (111,101) of sending packets of real-time information at a sender (311) includes steps of initially generating at the sender the packets of real-time information with a source rate (s11) greater than zero kilobits per second, and a time or path or combined time/path diversity rate (d11), the amount of diversity (d11) initially being at least zero kilobits per second. The process sends the packets, thereby resulting in a quality of service QoS, and optionally obtains at the sender (311) a measure of the QoS. Rate/diversity adaptation decision may be performed at receiver (361′) instead. Another step compares the QoS with a threshold of acceptability (Th1), and when the QoS is on an unacceptable side of said threshold (Th1) increases the diversity rate (d11 to d22) and sends not only additional ones of the packets of real-time information but also sends diversity packets at the diversity rate as increased (d22). Increasing the diversity rate (d11 to d22) while either reducing or keeping unchanged the overall transmission rate (sij+dij) is an important new improvement in even solely-time-diversity embodiments. In another form of the invention a single-chip integrated circuit includes a processor circuit (1511), and a rate-and-diversity control (1561). Here again, the diversity is contemplated to be time diversity, path diversity, and combined time/path diversity in various embodiments. Other embodiments disclosed encompass other processes, improved packets and packet ensembles, integrated circuits, chipsets, computer add-in cards, information storage articles, systems, computers, gateways, routers, cellular telephone handsets, wireless base stations, appliances, and packet networks, and other forms as claimed.
摘要翻译：在发送器（311）发送实时信息分组的过程（111,101）包括以下步骤：首先在发送器处产生具有大于零千比特/秒的源速率（s11）的实时信息分组，以及时间或路径或组合时间/路径分集速率（d11），分集量（d11）最初至少为零千比特每秒。该过程发送分组，从而导致服务质量QoS，并且可选地在发送方（311）获得QoS的度量。可以在接收机（361'）处执行速率/分集适配决定。另一步骤将QoS与可接受性阈值（Th1）进行比较，并且当QoS处于所述阈值（Th1）的不可接受侧时，增加分集速率（d11至d22），并且不仅发送实际数据包中的附加数据，时间信息，但也以多样化速率发送分集数据包（d22）。在降低或保持整体传输速率（sij + dij）的同时，增加分集率（d11至d22）是即使单时间多样性实施例中的重要新进展。在本发明的另一种形式中，单片集成电路包括处理器电路（1511）和速率分集控制（1561）。再次，在各种实施例中，分集被认为是时间分集，路径分集和组合的时间/路径分集。所公开的其他实施例包括其他过程，改进的分组和分组集合，集成电路，芯片组，计算机附加卡，信息存储产品，系统，计算机，网关，路由器，蜂窝电话手机，无线基站，设备和分组网络，和所要求的其他形式。

4. 发明授权

US08456991B2 Source and diversity rate less than a first transmission rate 有权
标题翻译：源和分集率小于第一传输速率
公开(公告)号：US08456991B2
公开(公告)日：2013-06-04
申请号：US12555485
申请日：2009-09-08
申请人： Vishu R. Viswanathan , Alan V. McCree , Krishnasamy Anandakumar
发明人： Vishu R. Viswanathan , Alan V. McCree , Krishnasamy Anandakumar
IPC分类号： H04J1/16 , H04L12/66 , H04L12/28 , H04L1/14
CPC分类号： H04L43/0829 , H04B7/06 , H04L29/06027 , H04L65/608 , H04L65/80 , H04W24/00 , H04W24/08 , H04W28/22 , H04W28/24
摘要： Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
摘要翻译：以大于零千比特/秒的源速率发送实时信息的分组，并且时间或路径或组合的时间/路径分集速率最初为零千比特每秒。这导致服务质量QoS，可选地在发送者或接收者处测量。当QoS处于可接受阈值的不可接受的一侧时，发送方以增加的速率发送分集分组。降低或维持整体传输速率的同时提高分集速度是新的。基于CELP的多描述数据分割在一个分组中发送基本或重要信息加上固定激励的子集，并将另一个分组中的基本或重要信息加上固定激励的互补子集发送。当接收到两个数据包时，仅接收到两个数据包中的一个并且更好的质量，重建将产生可接受的质量。重建提供单个和多个丢失的数据包。

5. 发明申请

US20120008645A1 SYSTEMS, PROCESSES AND INTEGRATED CIRCUITS FOR RATE AND/OR DIVERSITY ADAPTATION FOR PACKET COMMUNICATIONS 审中-公开
标题翻译：用于分组通信的速率和/或多样性适应的系统，过程和集成电路
公开(公告)号：US20120008645A1
公开(公告)日：2012-01-12
申请号：US13240512
申请日：2011-09-22
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L12/00
CPC分类号： H04L47/34 , H04B7/06 , H04B7/0671 , H04L1/0007 , H04L1/0018 , H04L29/06027 , H04L47/10 , H04L47/11 , H04L47/2416 , H04L47/283 , H04L47/29 , H04L65/602 , H04L65/80 , H04W28/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n−1)′, [Lost Packet], P(n+2)P(n+1)′, and P(n+3)P(n+2)′, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
摘要翻译：分组网络设备上的媒体提供网络接口，语音传感器以及将语音传感器耦合到网络接口的至少一个集成电路组件。所述至少一个集成电路组件通过分组传输提供媒体，并保持限定具有初级阶段和次级阶段的分组流的重建的比特。次级具有一个或多个线性预测编码参数，长期预测滞后，奇偶校验以及自适应和固定码本增益。分组流具有单个分组丢失的实例，并且重构包括接收由P（n）P（n-1）'，[丢包]，P（n + 2）P（n + 1）表示的分组序列， '和P（n + 3）P（n + 2）'，获得来自次级信息的线性预测编码参数，长期预测滞后，奇偶校验和自适应和固定码本增益中的一个或多个信息，以及使用所接收的所述分组序列来执行激励重构。

6. 发明授权

US06744757B1 Private branch exchange systems for packet communications 有权
标题翻译：用于分组通信的专用分支交换系统
公开(公告)号：US06744757B1
公开(公告)日：2004-06-01
申请号：US09460065
申请日：1999-12-14
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L1266
CPC分类号： H04L45/24 , H04L45/00 , H04L47/10 , H04L47/29 , H04L65/80
摘要： A process (111,101) of sending packets of real-time information at a sender (311) includes steps of initially generating at the sender the packets of real-time information with a source rate (s11) greater than zero kilobits per second, and a time or path or combined time/path diversity rate (d11), the amount of diversity (d11) initially being at least zero kilobits per second. The process sends the packets, thereby resulting in a quality of service QoS, and optionally obtains at the sender (311) a measure of the QoS. Rate/diversity adaptation decision may be performed at receiver (361′) instead. Another step compares the QoS with a threshold of acceptability (Th1), and when the QoS is on an unacceptable side of said threshold (Th1) increases the diversity rate (d11 to d22) and sends not only additional ones of the packets of real-time information but also sends diversity packets at the diversity rate as increased (d22). Increasing the diversity rate (d11 to d22) while either reducing or keeping unchanged the overall transmission rate (sij+dij) is an important new improvement in even solely-time-diversity embodiments. In another form of the invention a single-chip integrated circuit includes a processor circuit (1511), and a rate-and-diversity control (1561). Here again, the diversity is contemplated to be time diversity, path diversity, and combined time/path diversity in various embodiments. Other embodiments disclosed encompass other processes, improved packets and packet ensembles, integrated circuits, chipsets, computer add-in cards, information storage articles, systems, computers, gateways, routers, cellular telephone handsets, wireless base stations, appliances, and packet networks, and other forms as claimed.
摘要翻译：在发送器（311）发送实时信息分组的过程（111,101）包括以下步骤：首先在发送器处产生具有大于零千比特/秒的源速率（s11）的实时信息分组，以及时间或路径或组合时间/路径分集速率（d11），分集量（d11）最初至少为零千比特每秒。该过程发送分组，从而导致服务质量QoS，并且可选地在发送方（311）获得QoS的度量。可以在接收机（361'）处执行速率/分集适配决定。另一步骤将QoS与可接受性阈值（Th1）进行比较，并且当QoS处于所述阈值（Th1）的不可接受侧时，增加分集速率（d11至d22），并且不仅发送实时时间信息，但也以多样化速率发送分集数据包（d22）。在降低或保持整体传输速率（sij + dij）的同时，增加分集率（d11至d22）是即使单时间多样性实施例中的重要新进展。在本发明的另一种形式中，单片集成电路包括处理器电路（1511）和速率分集控制（1561）。再次，在各种实施例中，分集被认为是时间分集，路径分集和组合的时间/路径分集。所公开的其他实施例包括其他过程，改进的分组和分组集合，集成电路，芯片组，计算机附加卡，信息存储产品，系统，计算机，网关，路由器，蜂窝电话手机，无线基站，设备和分组网络，和所要求的其他形式。

7. 发明授权

US08463601B2 Sending speech packets with same and complementary subsets of fixed codebook pulses 有权
标题翻译：发送具有固定码本脉冲相同和互补子集的语音数据包
公开(公告)号：US08463601B2
公开(公告)日：2013-06-11
申请号：US13493548
申请日：2012-06-11
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： G01L19/04
CPC分类号： G10L13/02 , G10L19/04 , H04L29/06027 , H04L65/608 , H04L65/80 , H04W88/02
摘要： Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
摘要翻译：以大于零千比特/秒的源速率发送实时信息的分组，并且时间或路径或组合的时间/路径分集速率最初为零千比特每秒。这导致服务质量QoS，可选地在发送者或接收者处测量。当QoS处于可接受阈值的不可接受的一侧时，发送方以增加的速率发送分集分组。降低或维持整体传输速率的同时提高分集速度是新的。基于CELP的多描述数据分割在一个分组中发送基本或重要信息加上固定激励的子集，并将另一个分组中的基本或重要信息加上固定激励的互补子集发送。当接收到两个数据包时，仅接收到两个数据包中的一个并且更好的质量，重建会产生可接受的质量。重建提供单个和多个丢失的数据包。

8. 发明申请

US20110301947A1 SYSTEMS, PROCESSES AND INTEGRATED CIRCUITS FOR RATE AND/OR DIVERSITY ADAPTATION FOR PACKET COMMUNICATIONS 有权
标题翻译：用于分组通信的速率和/或多样性适应的系统，过程和集成电路
公开(公告)号：US20110301947A1
公开(公告)日：2011-12-08
申请号：US13209916
申请日：2011-08-15
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： G10L19/12 , G10L19/04
CPC分类号： G10L13/02 , G10L19/04 , H04L29/06027 , H04L65/608 , H04L65/80 , H04W88/02
摘要： Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
摘要翻译：以大于零千比特/秒的源速率发送实时信息的分组，并且时间或路径或组合的时间/路径分集速率最初为零千比特/秒。这导致服务质量QoS，可选地在发送者或接收者处测量。当QoS处于可接受阈值的不可接受的一侧时，发送方以增加的速率发送分集分组。降低或维持整体传输速率的同时提高分集速度是新的。基于CELP的多描述数据分割在一个分组中发送基本或重要信息加上固定激励的子集，并将另一个分组中的基本或重要信息加上固定激励的互补子集发送。当接收到两个数据包时，仅接收到两个数据包中的一个并且更好的质量，重建会产生可接受的质量。重建提供单个和多个丢失的数据包。

9. 发明授权

US08024182B2 Rate/diversity adaptation sending speech in first and second packets 有权
标题翻译：速率/分集适配在第一和第二分组中发送语音
公开(公告)号：US08024182B2
公开(公告)日：2011-09-20
申请号：US12494998
申请日：2009-06-30
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： G10L19/04
CPC分类号： G10L13/02 , G10L19/04 , H04L29/06027 , H04L65/608 , H04L65/80 , H04W88/02
摘要： Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
摘要翻译：以大于零千比特/秒的源速率发送实时信息的分组，并且时间或路径或组合的时间/路径分集速率最初为零千比特每秒。这导致服务质量QoS，可选地在发送者或接收者处测量。当QoS处于可接受阈值的不可接受的一侧时，发送方以增加的速率发送分集分组。降低或维持整体传输速率的同时提高分集速度是新的。基于CELP的多描述数据分割在一个分组中发送基本或重要信息加上固定激励的子集，并将另一个分组中的基本或重要信息加上固定激励的互补子集发送。当接收到两个数据包时，仅接收到两个数据包中的一个并且更好的质量，重建会产生可接受的质量。重建提供单个和多个丢失的数据包。

10. 发明申请

US20100085986A1 SYSTEMS, PROCESSES AND INTEGRATED CIRCUITS FOR RATE AND/OR DIVERSITY ADAPTATION FOR PACKET COMMUNICATIONS 有权
标题翻译：用于分组通信的速率和/或多样性适应的系统，过程和集成电路
公开(公告)号：US20100085986A1
公开(公告)日：2010-04-08
申请号：US12636463
申请日：2009-12-11
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04J3/24
CPC分类号： H04L47/34 , H04B7/06 , H04B7/0671 , H04L1/0007 , H04L1/0018 , H04L29/06027 , H04L47/10 , H04L47/11 , H04L47/2416 , H04L47/283 , H04L47/29 , H04L65/602 , H04L65/80 , H04W28/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n−1)′, [Lost Packet], P(n+2)P(n+1)′, and P(n+3)P(n+2)′, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
摘要翻译：分组网络设备上的媒体提供网络接口，语音传感器以及将语音传感器耦合到网络接口的至少一个集成电路组件。所述至少一个集成电路组件通过分组传输提供媒体，并保持限定具有初级阶段和次级阶段的分组流的重建的比特。次级具有一个或多个线性预测编码参数，长期预测滞后，奇偶校验以及自适应和固定码本增益。分组流具有单个分组丢失的实例，并且重构包括接收由P（n）P（n-1）'，[丢包]，P（n + 2）P（n + 1）表示的分组序列， '和P（n + 3）P（n + 2）'，获得来自次级信息的线性预测编码参数，长期预测滞后，奇偶校验和自适应和固定码本增益中的一个或多个信息，以及使用所接收的所述分组序列来执行激励重构。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式