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1. 发明授权

US08548460B2 Codec deployment using in-band signals 有权
标题翻译：使用带内信号的编解码器部署
公开(公告)号：US08548460B2
公开(公告)日：2013-10-01
申请号：US12904900
申请日：2010-10-14
申请人： Min Wang , Dai Yang , Vivek Rajendran , Ananthapadmanabhan Arasanipalai Kandhadai , Alireza R. Heidari , Jeremy P. Toman
发明人： Min Wang , Dai Yang , Vivek Rajendran , Ananthapadmanabhan Arasanipalai Kandhadai , Alireza R. Heidari , Jeremy P. Toman
IPC分类号： H04W4/00 , H04B1/38 , H04M3/42
CPC分类号： H04L65/1043 , H04L65/1069 , H04L65/601 , H04L69/24 , H04W76/20 , H04W88/181
摘要： After a call is established between two stations using a codec that has been negotiated during call setup, in-band signaling may be used between the two stations to change the codec that is to be used. The in-band signals are indicative that the station that is transmitting the in-band signals can operate with a second codec and are used to probe whether the receiving station can also operate with that second codec. If the receiving station detects and reacts to the in-band signals, then both stations change to communicate with the second codec. The second codec has compatible packet sizes of the deployed (originally negotiated) codec without any need of infrastructure upgrade and/or quality compromise to legacy phone users (i.e., stations that cannot operate with the second codec).
摘要翻译：在使用在呼叫建立期间协商的编解码器的两个站之间建立呼叫之后，可以在两个站之间使用带内信令来改变要使用的编解码器。带内信号指示正在发送带内信号的站可以用第二编解码器操作，并且用于探测接收站是否也可以与该第二编解码器一起操作。如果接收站检测并对带内信号作出反应，则两台站改变以与第二编解码器进行通信。第二编解码器具有部署的（最初协商的）编解码器的兼容分组大小，而不需要对传统电话用户（即，不能与第二编解码器一起操作的站）的基础架构升级和/或质量损害。

2. 发明申请

US20110294501A1 CODEC DEPLOYMENT USING IN-BAND SIGNALS 有权
标题翻译： CODEC部署使用带内信号
公开(公告)号：US20110294501A1
公开(公告)日：2011-12-01
申请号：US12904900
申请日：2010-10-14
申请人： Min Wang , Dai Yang , Vivek Rajendran , Ananthapadmanabhan Arasanipalai Kandhadai , Alireza R. Heidari , Jeremy P. Toman
发明人： Min Wang , Dai Yang , Vivek Rajendran , Ananthapadmanabhan Arasanipalai Kandhadai , Alireza R. Heidari , Jeremy P. Toman
IPC分类号： H04W4/00
CPC分类号： H04L65/1043 , H04L65/1069 , H04L65/601 , H04L69/24 , H04W76/20 , H04W88/181
摘要： After a call is established between two stations using a codec that has been negotiated during call setup, in-band signaling may be used between the two stations to change the codec that is to be used. The in-band signals are indicative that the station that is transmitting the in-band signals can operate with a second codec and are used to probe whether the receiving station can also operate with that second codec. If the receiving station detects and reacts to the in-band signals, then both stations change to communicate with the second codec. The second codec has compatible packet sizes of the deployed (originally negotiated) codec without any need of infrastructure upgrade and/or quality compromise to legacy phone users (i.e., stations that cannot operate with the second codec).
摘要翻译：在使用在呼叫建立期间协商的编解码器的两个站之间建立呼叫之后，可以在两个站之间使用带内信令来改变要使用的编解码器。带内信号指示正在发送带内信号的站可以用第二编解码器操作，并且用于探测接收站是否也可以与该第二编解码器一起操作。如果接收站检测并对带内信号作出反应，则两台站改变以与第二编解码器进行通信。第二编解码器具有部署的（最初协商的）编解码器的兼容分组大小，而不需要对传统电话用户（即，不能与第二编解码器一起操作的站）的基础架构升级和/或质量损害。

3. 发明授权

US5550893A Speech compensation in dual-mode telephone 失效
标题翻译：语音补偿双模式电话
公开(公告)号：US5550893A
公开(公告)日：1996-08-27
申请号：US381314
申请日：1995-01-31
申请人： Alireza R. Heidari
发明人： Alireza R. Heidari
IPC分类号： H04B1/38 , H04B1/40 , H04Q7/32
CPC分类号： H04B1/40 , H04B1/38 , H04B1/406
摘要： A dual-mode telephone has transmit and receive channels suitable for cellular telephony, and is operative in analog and digital modes of communication. Each of the channels has parallel branches of circuitry wherein the circuitry of one branch accommodates voice signals in accordance with an analog protocol and the second branch accommodates voice signals processed by digital compression and expansion circuitry. The digital compression circuitry, which is employed for outgoing voice signals, and the digital expansion circuitry, which is employed for incoming voice signals, constitute a vocoder operative under control of a microcontroller unit. Operation of the vocoder during a digital transmission mode introduces a digitally processed quality to received voice signals, this characteristic being distinguishable from the voice quality of pulse-code modulation employed in the analog communication mode. In order to introduce uniformity of voice quality during both analog and digital modes of communication, the telephone includes circuitry for inserting the vocoder circuitry into the analog branch of the receive channel as a speech compensator with the compression and expansion circuitry operated in a back-to-back arrangement. The input and output signal formats of the speech compensator are identical, but the resulting output signal of the compensator has a digitally processed voice quality. Thereby, the digitally processed voice quality is present in both analog and digital modes of communication so as to eliminate a disturbance in change of voice quality during a hand-off between the two communication modes.
摘要翻译：双模电话具有适合于蜂窝电话的发射和接收信道，并且在模拟和数字通信模式下工作。每个通道具有并联的电路分支，其中一个分支的电路根据模拟协议适应语音信号，并且第二分支适应由数字压缩和扩展电路处理的语音信号。用于输出语音信号的数字压缩电路和用于输入语音信号的数字扩展电路构成在微控制器单元的控制下操作的声码器。声码器在数字传输模式下的操作向收到的语音信号引入数字处理的质量，该特征与模拟通信模式中采用的脉码调制语音质量不同。为了在模拟和数字通信模式下引入语音质量的均匀性，电话包括用于将声码器电路插入到作为语音补偿器的接收信道的模拟分支中的电路，压缩和扩展电路以后向 - 安排。语音补偿器的输入和输出信号格式是相同的，但补偿器的结果输出信号具有数字处理的语音质量。因此，数字处理的语音质量存在于模拟和数字通信两种模式中，以便消除在两种通信模式之间切换期间语音质量变化的干扰。

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