CN102792625A - 语音信道上运行的数字带内调制解调器的自适应数据传输 - Google Patents
语音信道上运行的数字带内调制解调器的自适应数据传输 Download PDFInfo
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Abstract
在一个实施例中,调制设备(4)使用一个特定的调制参数组(8)编码数字比特流(2),所述特定的调制参数组针对多个声编码模式的一个子集被优化,而不预先知道声码器(5)当前运用所述声编码模式中的哪一个。所述调制设备(4)使用所述特定的调制参数组(8)通过声码器(5)在无线远程通信网络上进行传输,并监控(19)这些传输的错误。如果所述错误达到一个阈值,则声码器(5)可使用所述声编码模式中的不被包括在针对其优化的所述特定的调制参数组(8)的子集中的一个,并且相应地,所述调制设备(4)从所述特定的调制参数组(8)切换至一个不同的调制参数组(9)。
Description
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背景技术
无线远程通信覆盖已经变得在全世界的大部分国家,尤其是在工业化国家,几乎无处不在。同样,在一些发展中国家,缺少传统的铜线远程通信基础设施的地区已跨过该技术而部署了无线技术。现代无线网络提供了各种各样的语音和数据服务。这些服务的技术详情可以在许多地方,例如3GPP标准组网站www.3gpp.org,找到。
但是,一些无线数据服务慢且覆盖不均。“SMS”(短消息服务)就是一个例子。相比而言,无线语音服务趋于具有普遍好的品质,且在人们所到之处几乎都是可用的。因此,在可靠且广泛的覆盖重要的情况下,例如在实施紧急服务,诸如报警、救火、医疗或其他紧急服务时,语音服务是好的选择。当人们正在旅行时,尤其是在机动车辆中,获得紧急服务的有效无线通信是必不可少的。
我们提及“带内”通信指的是在语音信道中,区别于数据信道、控制信道或其他非语音无线服务。重要的是,尽管语音信道被优化用于高效传输真实人类语音业务,但事实上,语音信道也可以用于传输相对少量的数据(例如,数十比特或数百比特,而不是数兆比特)。语音信道的特点在于特殊的性能特征。例如,基于正常的人类语音,仅需要收发相对窄范围的音频频率。事实上,已知一些复杂的压缩和编码技术使得能够非常高效地在数字无线网络上发送和接收人类语音。但是,这些语音编码器或“声码器(vocoder)”(一般用软件、DSP芯片等来实现)根本不传输非语音声音。相反地,它们被仔细设计以滤除非语音信号。
图1是例示了典型的用于无线语音呼叫的话路(speech path),即无线远程通信网络上的电话呼叫,的简化方框图。来自麦克风的模拟语音信号被A/D转换器数字化,然后馈送至声码器编码算法(以8000样本/秒)。编码器产生压缩数据包(一般每20ms的音频帧一个包),并将该数据流馈送至无线电收发机。在另一方,无线电接收机将所述包传送至解码算法,然后该解码算法将原始语音信号(不完美地)重构为PCM流。该PCM流最终被转换回模拟电压,然后该模拟电压被施加到扬声器。
使用这类***,适量的数据(这里我们指用户数据,而不是声码器话语数据)可以通过仔细选择频率、时序以及使用特殊技术而被“带内”传输,所述特殊技术通过使信息“看起来像”人类语音数据来“欺骗”声码器传输信息。这类使用无线***的语音信道的数据通信有时称为“带内信令”。它可以用称为“带内信令调制解调器”的硬件和/或软件来实现,其借用了传统的“陆上线路”远程通信中熟知的老术语“调制解调器”(调制器-解调器)。
一些已颁布的专利公开了在无线远程通信网络的语音信道上传送数字数据的带内信令技术。在一个实施例中,输入端接收数字数据。编码器将该数字数据转化为合成人类话语频率特征的音频声调(audiotone)。所述数字数据也被编码以防止远程通信网络中的语音编码电路破坏代表该数字数据的合成音频声调。然后输出端将该合成音频声调输出至数字无线远程通信网络的语音信道。在一些情况中,携带“声调”的数据随着语音同时发送。所述声调可以被制作得短且相对不引人注意。在有时称为“空白和突发(blank and burst)”的其他实施方式中,在通过语音信道传输数据时,语音被切断。在另一些实施方式中,音频谱(audio frequency spectrum)的一些部分被用于语音,而其他部分被保留用于数据。这有助于在接收侧的解码。
如今,许多车辆都具有一些在无线网络上通信的能力。我们将这些车辆***称为远程信息处理客户端***(telematics clientsystem)。图2是一个示例性车载***(IVS)的简化方框图。它示出了典型的远程信息处理客户端***的相关部分的一个实例。该客户端***由被设计为在机动车环境中工作的嵌入式硬件和软件组成。
在图2中,远程信息处理软件包括“顾客应用(customapplication)”,其可以是几乎任何应用,尤其是采用经由无线网络的数据传输的应用。例如,该顾客应用可以涉及导航或娱乐。在运行中,该顾客应用将数据(优选为数据包)传输至带内信令调制解调器。该带内调制解调器将该数据(连同包报头及其他合适的开销)转换为音频声调。该音频“数据声调”被编码,非常像语音内容,且被传输至远程接收机。
如同在任何通信***中,在带内信令的处理中也会出现错误。例如,接收机会尝试从传输的数据声调恢复数据包,但是恢复的过程可能失败,或者恢复的包可能是原始包的错误表示。尽管存在可用于在错误情况下执行从传输侧重传的方案,以及在接收侧纠错的方案,但是需要一种减少由重传和/或纠错方案解决的错误数量的方案。下面的公开内容解决该问题以及其他问题。
发明内容
下面是对本发明的概述,以提供对本发明的一些方面的基本理解。这一概述不意在确定本发明的核心/关键要素或圈定本发明的范围。它的唯一目的在于以简洁的形式呈现本发明的一些构思,作为下面所陈述的更详细说明的前序。
在一个实施例中,一种移动设备,使用一个特定的调制参数组来编码数字比特流,以生成具有不同音频声调的音频信号,所述音频声调被选择以通过所述移动设备的声码器传送。所述特定的调制参数组针对多个声编码模式(vocoding mode)的一个子集被优化,而不预先知道所述声码器当前运用所述多个声编码模式中的哪一个。所述移动设备使用所述特定的调制参数组通过声码器在无线远程通信网络上进行传输,并监控这些传输的错误。如果所述错误达到一个阈值,则所述声码器可使用所述声编码模式中的不被包括在如下的所述子集中的一个,针对该子集所述特定的调制参数组被优化,并且相应地,所述调制设备从所述特定的调制参数组切换至一个不同的调制参数组。本发明的另外一些方面和优点将在下文对优选实施方案的详细说明中变得明了,对优选实施方案的说明参照附图进行。
附图说明
图1是例示了用于无线语音呼叫的典型的话路的简化方框图。
图2是带有嵌入式移动电话模块的示例性车载***(IVS)的简化方框图。
图3A例示了配置用于在调制参数组之间切换的带内信令(IBS)调制解调器。
图3B例示了一个示出图1的IBS调制解调器的运行的流程图。
图4例示了一个示出图1中所示的IBS调制解调器可如何确定何时在调制参数组之间切换的信令示图。
图5A例示了一个示出在接收侧的IBS调制解调器可如何确定何时在调制参数组之间切换并向图1的IBS调制解调器发信号的信令示图。
图5B是例示了接收机侧上的错误计数的流程图。
具体实施方式
图3A例示了配置用于在调制参数组之间切换的带内信令(IBS)调制解调器。
***100包括移动设备(也称为“客户端”)的带内信令(IBS)调制解调器4,该带内信令调制解调器4与远程IBS调制解调器诸如服务器的IBS调制解调器(未示出)相通信。IBS调制解调器4被配置为使用第一调制参数组8调制包数据。IBS调制解调器4的软件15监控与通过无线语音信道13到远程IBS调制解调器(未示出)的传输相关的错误,并且,根据所述错误监控,控制所述***100(包括IBS调制解调器4)是否在传输期间“退守(fall back)”到第二调制参数组9。
通过背景技术的方式,声码器诸如声码器5根据一种配置于其上的声编码算法(vocoding algorithm)或声编码编解码器(vocodingcodec)处理语音数据。存在许多已知的声编码算法,而声码器并非总是表明它们使用哪种特定的声编码算法。一些声码器诸如所例示的声码器5配置有多个声编码算法,并且将出于一些在此讨论范围之外的原因在任何时间在当前使用的声编码算法之间动态切换(这些动态切换可能并不必然是由任一声码器通告),使得事情进一步复杂化。
如前解释的,通过IBS调制解调器将包数据调制为音频信号10是为了将包数据的信息转化为将不会被无线语音信道的声码器滤除的形式。然而,不同的声编码算法按照不同方式处理输入,并且在一些情况下是如此不同,使得一个能够通过一种声编码算法足够准确地传送信息的调制方案将不会通过另一种声编码算法足够准确地传送信息。
在***100中,IBS调制解调器4被配置具有至少两个调制参数组,例如,调制参数组8和调制参数组9,它们每个代表一个调制方案。所述调制方案可以在下列参数中的一个或多个上有区别:调制频率、符号波形长度(symbol waveform length)、同步图案长度(synchronizationpattern length)、或全/半双工传输。调制方案8和9之一被优化用于使用已知的声编码算法中的一个子集,意味着该调制方案将通常能够以高性能通过该子集的声编码算法传送信息,但是不必然通过其他声编码算法。调制方案8和9中的另一个或者使用已知的声编码算法的不同子集被优化,或者不用任何具体的声编码算法优化(特点在于广泛兼容较低性能的声编码算法)。
IBS调制解调器4在“缺省模式”中利用调制方案8和9中的特定的一个调制方案,而不分析声码器5当前使用哪一个特定的声码方案。例如,在示例的***100中,起初传输时将使用针对声编码算法1-N的子集进行优化的高性能调制方案。该特定的调制方案的使用可被称为“预先(a priori)”,因为IBS调制解调器4不具有关于声码器5当前正在使用声编码算法1-N中哪一个(或者就此而言的任何已知声编码算法中的哪一个)的实际信息。
软件15接下来持续监控利用调制方案8和9中的特定一个调制方案的传输。换言之,实际的错误监控信息19被反馈回到软件15。如果错误监控信息19表明已经达到错误的阈值量,则软件15使IBS调制解调器4切换调制方案,这在图3中由控制信号17逻辑示出。在示出的特定的实施例中,IBS调制解调器4“退守”到这样一个调制方案,该调制方案具有相对于缺省调制方案的下列参数中的一个或多个:不同的调制频率、较大的符号波形长度、较大的同步图案长度、以及半双工传输而不是全双工传输。改变调制频率可防止数据被所使用的声编码算法滤除。具有较大的符号波形长度的调制方案为了识别所传输的符号而向接收机供应更多的波形信息,并且这些符号在“劣质信道”环境中通常更可能被正确地恢复,这样的“劣质信道”环境例如是,一个正使用对包数据不利的声码方案的声码器。在一个实施例中,在一个调制方案中,所述符号比另一调制方案中长四倍。具有较大同步图案长度的调制方案使用较长的同步图案来向远程的IBS调制解调器发信号通知有效负荷的开始,较长的同步图案较少可能导致在“劣质信道”环境中的接收侧的错误或遗漏的检测。使用半双工可避免在IBS调制解调器之间的串话干扰。
所述调制方案8和9的一个特定的实施例如下。所述调制方案中的第一个调制方案具有400波特的数据符号率,以及对于发射机和接收机的调制频率分别为F1/F2和F3/F4。由于发射机侧和接收机侧使用不同的频率,在波形之间尽管存在暂时重叠但没有(或有最小)干扰,全双工工作是可能的。所述调制方案中的第二个退守方案具有100波特的数据符号率,以及符号长度为第一调制方案的四倍。对于发射机和接收机的调制频率都是F1/F2,以及使用半双工传输模式。与第一调制方案不同,由于4.8kbps EVRC-B声编码算法抑制这些调制频率,第二反馈调制方案不使用F3/F4调制频率。
如果IBS调制解调器4不从缺省调制方案切换至退守调制方案,则IBS调制解调器4转而向远程IBS调制解调器发信号通知开始根据退守调制方案进行解调。结果,由于使用与目前使用的声编码算法之一的调制方案不对应而导致的错误可消除,减少了与纠错相关的重传和处理。应理解,更加鲁棒的退守调制方案也能够解决由于无线语音信道介质的状况所产生的错误,例如,掉话以及丢包,和/或由于另一网络例如电路切换介质所产生的错误。
应理解,软件15还可被配置为在利用退守调制方案一段时间之后,切换回至缺省调制方案。例如,如果在预设的一个时间段上观察到错误的阈值最低限度,则软件15可自动切换回来。
如前解释的,声码器通常不显示它们使用的是哪个特定的声编码算法。然而,存在一些“不友好的”声码器,例如,侵略性地滤除非语音数据的声码器,它们具有显示它们的声编码算法的特性。一个特定的实施例是由一些声码器所使用的4.8kbps EVRC-B声编码算法。相应地,IBS调制解调器4可被配置为,当与使用这些特定的声码方案的声码器配对时,使用退守调制方案初始调制数字比特流。例如,如果识别的声编码算法不被包括在如下的声编码算法的子集中,对于该子集高性能调制方案被优化,则可立即声明劣质信道,并且结果IBS调制解调器4使用退守调制方案调制数字比特流2的初始部分。
上述的调制方案可利用频率调制方案诸如频移键控(FSK)调制。如果使用频率调制方案,则可使用所选择的一对频率来对信息编码,或者使用具有较多频率的组(即,多于两个频率的组)来对信息编码。应明了,上述的原则可应用于其他调制方案,诸如那些其中信息是使用其他信号特征——包括但不限于载波频率的相位或幅度——被编码的调制方案。
图3B例示了一个示出图1的IBS调制解调器的运行的流程图。
在方框301中,IBS调制解调器4尝试识别声码器当前所使用的声编码算法。如果在菱形框302中识别了一个声编码算法,则在方框303A中,IBS调制解调器4根据所述识别在第一调制方案和第二退守调制方案之间选择。否则,在方框303B,IBS调制解调器4使用第一调制方案调制数字比特流的初始部分,以生成一个对于不同比特值具有不同音频声调的音频信号,其中所述音频声调被选择以通过一个不受声码器阻碍的无线远程通信网络的一个无线语音信道传送。
在方框304,IBS调制解调器4监控在无线远程通信网络上的传输。这些监控的实施例将稍后更具体地参照图4和5A-B进行讨论。如果在菱形框305中,错误少于预设阈值,则在方框306A,IBS调制解调器4使用第一调制方案调制数字比特流的后续部分。如果在菱形框305中,错误达到预设阈值,则在方框306B,IBS调制解调器4使用第二退守调制方案调制数字比特流的后续部分。如前所述,与第一调制方案相比,第二退守调制方案具有下列中的至少一个:不同的调制频率、较大的符号波形长度、较大的同步图案长度、或半双工传输而不是全双工传输。
如果在方框307中,整个比特流都被馈至声码器,则该过程在方框308结束。否则,该过程返回到方框304监控。
图4例示了一个示出图1中所示的IBS调制解调器可如何确定何时在调制参数组之间切换的信令示图。
在***200中,发送IBS调制解调器(transmitting IBS modem)基于计算非确认(non-acknowledgement)来确定何时在调制方案之间切换。非确认包括在该特定示例中所示的否定确认,以及传输错误的任何其他指示,诸如没有在预设时间量内接收到肯定确认。
例如,发送IBS调制解调器使用第一调制方案调制第一包并且发送经调制的包。为了示例的目的,假设经调制的包被成功恢复,以及在发送IBS调制解调器处接收回一个确认。
发送IBS调制解调器使用第一调制方案调制第二包。为了示例的目的,假设经调制的包没有被成功恢复。接收IBS调制解调器(receiving IBS modem)发出一个否定确认,如上所述它是一种类型的非确认。发送IBS调制解调器递增非确认的计数器。发送调制解调器接下来使用第一调制方案重新发送经调制的第二包。
当接收到接下来的非确认(同样,或者是否定确认或者传输错误的任何其他指示)时,在发送IBS上,计数器继续递增。在计数器达到预设的错误阈值后,声明一个劣质信道,并且使用第二退守调制方案进行接下来的传输。例如,在该特定示例中,在达到阈值时仍尝试传送第二包,从而根据第二退守调制方案调制第二包,然后发送。应理解,在计数方面可利用滞后现象,以避免过早切换至第二退守调制方案。
如前解释的,发送I BS调制解调器还向接收IBS调制解调器发信号通知以切换调制方案。优选使用第二退守调制方案发送这种信令。当然,这意味着,接收I BS调制解调器被配置为即使当使用第一调制方案对数据包操作时,也可解调使用第二退守调制方案发送的信令。发送IBS调制解调器可等待根据第二退守调制方案启动调制,直到接收IBS调制解调器肯定地指示该接收IBS调制解调器已经开始在退守调制解调器中工作。
应理解,在从服务器下载到移动客户端的情况下,服务器执行发送IBS调制解调器的功能。相反,在从移动客户端上传到服务器的情况下,移动客户端执行发送IBS调制解调器的功能。
在一段时间之后,发送IBS调制解调器可启动切换回到第一调制方案。切换回到第一调制方案可在经过一个预设量的时间之后自动发生,或者在经过该预设量的时间之后但是只有当在该时间内检测到小于特定量的错误时才发生,等。如果错误是由无线远程通信网络介质的暂时问题引起的,则可能的是,使用第一调制方案的传输在该时间可以是相对无错误的。此外,如果错误是由沿着呼叫路径的一个声码器暂时使用一种特定的声编码算法引起的,则可能的是,使用第一调制方案的传输在该时间可以是相对无错误的。
图5A例示了一个示出在接收侧的IBS调制解调器可如何确定何时在调制参数组之间切换并向图1的IBS调制解调器发信号的信令示图。
在***300中,接收IBS调制解调器基于计算的使用循环冗余码校验(CRC)检错或一些其他形式的检错而检测的错误,确定何时在调制方案之间切换。
例如,接收IBS调制解调器接收根据第一调制方案调制的第一包。接收IBS调制解调器接下来对于第一包的恢复数据执行CRC。为了示例目的,假设在该CRC期间没有识别到错误。接收IBS调制解调器可发送该第一包已被成功恢复的确认。
接收IBS调制解调器接下来对根据第一调制方案调制的第二包执行CRC。为了示例目的,假设该CRC识别到错误。接收IBS调制解调器接下来更新计数器。所述接收IBS调制解调器可发送一个否定确认。
随着后续错误被发现,在发送IBS上,计数器继续递增。在计数器达到预设的错误阈值后,声明一个劣质的信道。应理解,在计数方面可利用滞后现象,以避免过早切换至第二退守调制方案。
接收IBS调制解调器接下来发送请求切换调制方案,导致发送调制解调器使用第二退守调制方案重新传输包(或者开始使用退守调制方案发送尚未发送的包)。如以前所述,请求本身是根据第二退守调制方案调制的。当然,这意味着发送IBS调制解调器被配置为即使当使用第一调制方案对包数据操作时,也解调使用第二退守调制方案发送的信令。
图5B是例示了接收机侧上的错误计数的流程图。
在流程图400中,使用前向纠错(FEC)奇偶校验位来纠正包数据,然后执行CRC计算。应明了,在进行CRC或其他检错过程之前可以先执行任何形式的纠错。可对报头、有效负荷(标为附图中的“数据”)、或二者执行检错。
应理解,包通常被分段传输。从而,计数器可对每个错误的段递增一次(一个段是一个报头和对应于一个包的一部分的有效负荷的组合)。
在一个实施例中,处理器可读介质被编码有专用指令,所述专用指令如果被执行则会导致特定的操作。一个操作包括使用一个特定的调制参数组处理所接收的数字比特流,以生成一个对于不同比特值具有不同音频声调的音频信号,其中所述音频声调被选择以通过一个不受声码器阻碍的无线远程通信网络的一个无线语音信道传送,以及其中所述特定的调制参数组针对多个声编码模式的一个子集被优化,而不预先知道所述声码器当前运用所述多个声编码模式中的哪一个声编码模式来声编码所述音频信号。另一操作包括监控所述无线远程通信网络上的传输,以识别与所述无线语音信道上的传输相关的错误量何时达到一个预设阈值。另一操作包括如果所述监控指示所述错误量达到所述预设阈值,则从所述特定的调制参数组切换至一个不同的调制参数组。在一些情况下,所述错误中的至少一些错误是由声码器运用一个不被包括在如下的子集内的声编码模式而引起,针对该子集所述特定的调制参数组相关于错误传输被优化。
所述不同的调制参数组可被设计以获得比所述特定的调制参数组更大的兼容性,以及其中,所述不同的调制参数组关于声编码模式的所述子集未被优化,和/或关于声编码模式的一个不同子集被优化。
另一操作可包括,如果所述监控指示所述错误量达到所述预设阈值,则从使用第一符号类型编码转变为使用比所述第一符号类型具有更长持续时间的第二符号类型进行编码。
另一操作可包括,如果所述监控指示所述错误量达到所述预设阈值,则从使用第一频率对进行编码转变为使用较低的第二频率对进行编码,其中较高的第一频率对是关于错误传输使用的。
另一操作可包括,如果所述监控指示所述错误量达到所述预设阈值,则将一个第一图案编码到所述音频信号中,其中所述第一图案比如下的第二图案供应更多的波形信息供接收机在识别符号中使用,所述第二图案是在识别到错误传输之前被编码到所述音频信号中的。
另一操作可包括,如果所述监控指示所述错误量达到所述预设阈值,则从使用第一符号类型编码转变为使用比所述第一符号类型具有更长持续时间的第二符号类型进行编码;从使用第一频率组编码转变为使用不同的第二频率组编码;以及将一个第一图案编码到所述音频信号中,其中所述第一图案比如下的第二图案供应更多的波形信息供接收机在识别符号中使用,所述第二图案是在识别到错误传输之前被编码到所述音频信号中的。
另一操作可包括,如果所述监控指示所述错误量达到所述预设阈值,则从全双工传输模式转变为半双工传输模式。
另一操作可包括,计数非确认的数量,其中所述切换是基于所述计数。
另一操作可包括处理由接收端点生成的信令,其中所述切换是基于所述信令。
在另一实施例中,提供一种特定的方法。该方法中的一个步骤包括:使用一个特定的调制参数组处理所接收的数字比特流,以生成一个对于不同比特值具有不同音频声调的音频信号,其中所述音频声调被选择以通过一个不受声码器阻碍的无线远程通信网络的一个无线语音信道传送,以及其中所述特定的调制参数组针对多个声编码模式的一个子集被优化,而不预先知道所述声码器当前运用所述多个声编码模式中的哪一个声编码模式来声编码所述音频信号。该方法中的另一步骤包括,从用于传输的解调端点反馈回实际的错误信息。该方法中的另一步骤包括,当反馈回的错误信息指示错误达到一个预设阈值时,从所述特定的调制参数组切换至一个不同的调制参数组。在一些情况下,所述不同的调制参数组关于声编码模式的所述子集未被优化,和/或关于声编码模式的一个不同子集被优化。
所述方法中的另一步骤包括,当反馈回的错误信息指示错误达到预设阈值时,从使用第一符号类型编码转变为使用比所述第一符号类型具有更长持续时间的第二符号类型进行编码。
所述方法中的另一步骤包括,当反馈回的错误信息指示错误达到预设阈值时,从使用第一频率组编码转变为使用较低的第二频率组编码,其中较高的第一频率组是关于错误传输使用的。
所述方法中的另一步骤包括,将一个第一图案编码到所述音频信号中,其中所述第一图案比如下的第二图案供应更多的波形信息供接收机在识别符号中使用,所述第二图案是在达到所述预设阈值之前被编码到所述音频信号中的。
在另一实施例中,处理器可读介质被编码有专用指令,所述指令如果被执行则将导致具体操作。一个操作包括确定声码器是否当前正运用多个声编码模式中的特定的一个或一些。另一个操作包括使用一个特定的调制参数组处理所接收的数字比特流,以生成一个对于不同比特值具有不同音频声调的音频信号,其中所述音频声调被选择以通过一个不受所述声码器阻碍的无线远程通信网络的一个无线语音信道传送;其中如果所述确定指示所述声码器目前正在运用所述多个声编码模式中的特定的一个或一些,则所述特定的调制参数组具有第一组参数,否则,所述特定的调制参数组具有不同的第二组参数。另一操作包括,监控无线远程通信网络上的传输以识别与所述无线语音信道上的传输相关的错误量何时达到一个预设阈值。另一操作包括,如果所述监控指示所述错误量达到所述预设阈值,则调整对所接收的数字比特流的处理。
另一操作包括,如果所述监控指示所述错误量达到所述预设阈值,则从使用第一符号类型编码转变为使用具有比所述第一符号类型更长持续时间的第二符号类型进行编码。
另一操作包括,如果所述监控指示所述错误量达到所述预设阈值,则从使用第一频率组编码转变为使用较低的第二频率组编码。
另一操作包括,如果所述监控指示所述错误量达到所述预设阈值,则将一个第一图案编码到所述音频信号中,其中所述第一图案比如下的第二比特长度供应更多的波形信息供接收机在识别符号中使用,所述第二比特长度是在识别到错误传输之前被编码到所述音频信号中的。
另一操作包括,计数非确认的数量或处理由接收端点所生成的信令,其中所述调整是基于所述计数或所述信令。
本领域技术人员应明了,在不违背本发明的基本原理的前提下,可以对上述实施方案的细节做出许多改变。因此,本发明的范围应仅由下列权利要求确定。
上述的大多数设备包括硬件和关联软件。例如,典型的导航设备很可能包括一个或多个处理器以及在这些处理器上可执行以实现上述操作的软件。在本文中,我们以普遍理解的含义来使用术语“软件”,指的是机器或处理器可用的程序或例程(子例程、对象、插件等)以及数据。众所周知,计算机程序通常包括存储在机器可读或计算机可读储存介质中的指令。本发明的一些实施方案可以包括存储在机器可读或计算机可读储存介质(诸如数字存储器)中的可执行程序或指令。我们并不暗示,在任何具体实施方案中都要求常规含义的“计算机”。例如,在设备(诸如本文描述的部件)中可以使用各种嵌入式的或其他类型的处理器。
用于存储软件的存储器也是众所周知的。在一些实施方案中,与给定处理器关联的存储器可以与处理器安置在同一物理设备中(“机载”存储器);例如,布置在集成电路微处理器或类似物内的RAM或FLASH存储器。在其他实施例中,存储器包括独立设备,诸如外部盘驱动器、存储阵列或便携式闪存钥匙链。在这样的情况下,当存储器和数字处理器***作性地联结在一起或彼此通信(例如通过I/O端口、网络连接等)时,该存储器变得与该数字处理器“关联”,使得该处理器可以读取存储在该存储器上的文件。关联存储器可以是被设计为“只读的”(ROM),或是依靠许可设置为“只读的”,或不是只读的。其他实例包括但不限于WORM、EPROM、EEPROM、FLASH等。这些技术常常以固态半导体器件实现。其他存储器可以包括运动件,诸如常规的旋转盘驱动器。所有这样的存储器都是“机器可读的”或“计算机可读的”,且可以用于存储可执行指令以执行本文描述的功能。
“软件产品”指的是如下的存储设备:其中一系列可执行指令被以机器可读形式存储,使得对该软件产品具有适当访问的合适机器或处理器可以执行所述指令以做出所述指令实现的处理。软件产品有时用于发布软件。任何类型的机器可读存储器,包括但不限于上面总结的,可以用于制作软件产品。也已知的是,软件可以经由电子传输(“下载”)发布,在该情况下通常在该传输的传输端或接收端或这两端将存在对应的软件产品。
既然已经在优选实施方案中描述和例示了本发明的原理,那么应明了,在不违背这些原理的前提下,可以在排列和细节方面对本发明做出修改。我们请求保护落在下列权利要求的精神和范围内的所有改型和变体。
Claims (20)
1.一种编码有指令的处理器可读介质,所述指令如果被执行则导致:
使用一个特定的调制参数组处理所接收的数字比特流,以生成一个对于不同比特值具有不同音频声调的音频信号,其中所述音频声调被选择以通过一个不受声码器阻碍的无线远程通信网络的一个无线语音信道传送,以及其中所述特定的调制参数组针对多个声编码模式的一个子集被优化,而不预先知道所述声码器当前运用所述多个声编码模式中的哪一个声编码模式来声编码所述音频信号;
监控在所述无线远程通信网络上的传输,以识别与所述无线语音信道上的传输相关的错误量何时达到一个预设阈值;
如果所述监控指示所述错误量达到所述预设阈值,则从所述特定的调制参数组切换至一个不同的调制参数组。
2.根据权利要求1所述的处理器可读介质,其中所述不同的调制参数组被设计以获得比所述特定的调制参数组更大的兼容性,以及其中,所述不同的调制参数组关于声编码模式的所述子集未被优化,和/或关于声编码模式的一个不同子集被优化。
3.根据权利要求1所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则从使用第一符号类型编码转变为使用比所述第一符号类型具有更长持续时间的第二符号类型进行编码。
4.根据权利要求1所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则从使用第一频率对进行编码转变为使用较低的第二频率对进行编码;
其中较高的第一频率对是关于错误传输使用的。
5.根据权利要求1所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则将一个第一图案编码到所述音频信号中,其中所述第一图案比如下的第二图案供应更多的波形信息供接收机在识别符号中使用,所述第二图案是在识别到错误传输之前被编码到所述音频信号中的。
6.根据权利要求1所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则从使用第一符号类型编码转变为使用比所述第一符号类型具有更长持续时间的第二符号类型进行编码;从使用第一频率组编码转变为使用不同的第二频率组编码;以及将一个第一图案编码到所述音频信号中,其中所述第一图案比如下的第二图案供应更多的波形信息供接收机在识别符号中使用,所述第二图案是在识别到错误传输之前被编码到所述音频信号中的。
7.根据权利要求1所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则从全双工传输模式转变为半双工传输模式。
8.根据权利要求1所述的处理器可读介质,其中所述错误中的至少一些错误是由声码器运用一个不被包括在如下的子集内的声编码模式而引起,针对该子集所述特定的调制参数组相关于错误传输被优化。
9.根据权利要求1所述的处理器可读介质,其中所述指令如果被执行则导致:
计数非确认的数量,其中所述切换是基于所述计数。
10.根据权利要求1所述的处理器可读介质,其中所述指令如果被执行则导致:
处理由接收端点生成的信令,其中所述切换是基于所述信令。
11.一种方法,包括:
使用一个特定的调制参数组处理所接收的数字比特流,以生成一个对于不同比特值具有不同音频声调的音频信号,其中所述音频声调被选择以通过一个不受声码器阻碍的无线远程通信网络的一个无线语音信道传送,以及其中所述特定的调制参数组针对多个声编码模式的一个子集被优化,而不预先知道所述声码器当前运用所述多个声编码模式中的哪一个声编码模式来声编码所述音频信号;
从用于传输的解调端点反馈回实际错误信息;以及
当反馈回的错误信息指示错误达到一个预设阈值时,从所述特定的调制参数组切换至一个不同的调制参数组。
12.根据权利要求11所述的方法,其中所述不同的调制参数组关于声编码模式的所述子集未被优化,和/或关于声编码模式的一个不同子集被优化。
13.根据权利要求11所述的方法,进一步包括:
当反馈回的错误信息指示错误达到所述预设阈值时,从使用第一符号类型编码转变为使用比所述第一符号类型具有更长持续时间的第二符号类型进行编码。
14.根据权利要求11所述的方法,进一步包括:
当反馈回的错误信息指示错误达到预设阈值时,从使用第一频率组编码转变为使用较低的第二频率组编码;
其中较高的第一频率组是关于错误传输使用的。
15.根据权利要求11所述的方法,进一步包括:
将一个第一图案编码到所述音频信号,其中所述第一图案比如下的第二图案供应更多的波形信息供接收机在识别符号中使用,所述第二图案是在达到所述预设阈值之前被编码到所述音频信号中的。
16.一种编码有指令的处理器可读介质,所述指令如果被执行则导致:
确定声码器是否当前正运用多个声编码模式中的特定的一个或一些;
使用一个特定的调制参数组处理所接收的数字比特流,以生成一个对于不同比特值具有不同音频声调的音频信号,其中所述音频声调被选择以通过一个不受所述声码器阻碍的无线远程通信网络的一个无线语音信道传送;
其中如果所述确定指示所述声码器目前正在运用所述多个声编码模式中的特定的一个或一些,则所述特定的调制参数组具有第一组参数,否则,所述特定的调制参数组具有不同的第二组参数;
监控所述无线远程通信网络上的传输,以识别与所述无线语音信道上的传输相关的错误量何时达到一个预设阈值;
如果所述监控指示所述错误量达到所述预设阈值,则调整对所接收的数字比特流的处理。
17.根据权利要求16所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则从使用第一符号类型编码转变为使用具有比所述第一符号类型更长持续时间的第二符号类型进行编码。
18.根据权利要求16所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则从使用第一频率组编码转变为使用较低的第二频率组编码。
19.根据权利要求16所述的处理器可读介质,其中所述指令如果被执行则导致:
如果所述监控指示所述错误量达到所述预设阈值,则将一个第一图案编码到所述音频信号中,其中所述第一图案比如下的第二比特长度供应更多的波形信息供接收机在识别符号中使用,所述第二比特长度是在识别到错误传输之前被编码到所述音频信号中的。
20.根据权利要求16所述的处理器可读介质,其中所述指令如果被执行则导致:
计数非确认的数量或处理由接收端点生成的信令,其中所述调整是基于所述计数或所述信令。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108461087A (zh) * | 2018-02-07 | 2018-08-28 | 芯盾(海南)信息安全技术有限公司 | 数字信号穿过声码器的装置及方法 |
CN109256141A (zh) * | 2018-09-13 | 2019-01-22 | 芯盾(北京)信息技术有限公司 | 利用语音信道进行数据传输的方法 |
CN113557681A (zh) * | 2019-03-06 | 2021-10-26 | 高通股份有限公司 | 高路径损耗模式的支持 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8483245B2 (en) * | 2010-07-30 | 2013-07-09 | General Motors Llc | Multi-tone detection for in-band data modem link establishment in wireless networks |
US8848825B2 (en) | 2011-09-22 | 2014-09-30 | Airbiquity Inc. | Echo cancellation in wireless inband signaling modem |
US8995437B2 (en) * | 2012-02-22 | 2015-03-31 | Texas Instruments Incorporated | Transmission of segmented frames in power line communication |
US9337958B2 (en) * | 2014-02-21 | 2016-05-10 | Sogics Corporation Limited | Data transmissions over a voice channel |
EP3308483B1 (en) * | 2015-06-15 | 2020-02-05 | Telefonaktiebolaget LM Ericsson (publ) | Variable synchronization block format |
EP3335346B1 (en) * | 2015-08-12 | 2021-12-15 | Telefonaktiebolaget LM Ericsson (publ) | Method of determining a mode of operation for a wireless terminal |
US9973300B2 (en) * | 2016-06-09 | 2018-05-15 | Echelon Corporation | Modulation adaption method for multi-mode modems |
JP6832794B2 (ja) * | 2017-06-05 | 2021-02-24 | ルネサスエレクトロニクス株式会社 | 無線通信システム |
JP7103197B2 (ja) * | 2018-12-14 | 2022-07-20 | トヨタ自動車株式会社 | 通信システム |
US11510071B2 (en) | 2019-04-17 | 2022-11-22 | Qualcomm Incorporated | Beam direction selection for high pathloss mode operations |
US11477747B2 (en) | 2019-04-17 | 2022-10-18 | Qualcomm Incorporated | Synchronization signal periodicity adjustment |
US11463964B2 (en) | 2019-04-17 | 2022-10-04 | Qualcomm Incorporated | Communication configuration for high pathloss operations |
US11438808B2 (en) | 2019-04-17 | 2022-09-06 | Qualcomm Incorporated | Acknowledgment messaging for resource reservations |
US11445408B2 (en) | 2019-04-17 | 2022-09-13 | Qualcomm Incorporated | High pathloss mode multiplexing |
US11973548B2 (en) | 2022-02-03 | 2024-04-30 | T-Mobile Usa, Inc. | Adjusting a configuration of a wireless telecommunication network |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050207511A1 (en) * | 2004-03-17 | 2005-09-22 | General Motors Corporation. | Meethod and system for communicating data over a wireless communication system voice channel utilizing frame gaps |
Family Cites Families (440)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1945944A (en) | 1930-12-03 | 1934-02-06 | William W Varney | Air conditioning system and apparatus therefor |
US3742463A (en) | 1970-03-02 | 1973-06-26 | Nielsen A C Co | Data storage and transmission system |
US3742197A (en) | 1972-01-14 | 1973-06-26 | Stomberg Carlson Corp | Synthesis of digital signals corresponding to selected analog signals |
US3984814A (en) | 1974-12-24 | 1976-10-05 | Honeywell Information Systems, Inc. | Retry method and apparatus for use in a magnetic recording and reproducing system |
US3971888A (en) | 1975-04-02 | 1976-07-27 | Bell Telephone Laboratories, Incorporated | Synchronization system for variable length encoded signals |
US3985965A (en) | 1975-07-02 | 1976-10-12 | Gte Sylvania Incorporated | Digital signal generator |
FR2379694A1 (fr) | 1977-02-03 | 1978-09-01 | Schlumberger Prospection | Systeme de transmission de donnees pour puits de forage |
US4158748A (en) | 1977-06-27 | 1979-06-19 | Motorola, Inc. | Apparatus for digital data synchronization |
JPS54143009A (en) | 1978-04-28 | 1979-11-07 | Kokusai Denshin Denwa Co Ltd | Space diversity system for tdma communication system |
US4310722A (en) | 1978-11-09 | 1982-01-12 | Bell Telephone Laboratories, Incorporated | Mobile radiotelephone station two-way ranging system |
JPS5681900A (en) | 1979-12-10 | 1981-07-04 | Nippon Electric Co | Voice synthesizer |
US4368987A (en) | 1980-06-25 | 1983-01-18 | The United States Of America As Represented By The Secretary Of The Navy | Conjugate-phase, remote-clock synchronizer |
US4528588A (en) | 1980-09-26 | 1985-07-09 | Loefberg Bo | Method and apparatus for marking the information content of an information carrying signal |
US4539557A (en) | 1981-10-19 | 1985-09-03 | Sunderland & South Shields Water Company | Combined communication, security and alarm radio system |
JPS58111784A (ja) | 1981-12-25 | 1983-07-02 | Nec Corp | 時刻の遠隔較正方式 |
US4494211A (en) | 1982-11-24 | 1985-01-15 | The United States Of America As Represented By The Secretary Of The Navy | Balanced system for ranging and synchronization between satellite pairs |
US4641323A (en) | 1983-02-07 | 1987-02-03 | Tsang Chung K | Multi-phase PSK demodulator |
US4656463A (en) | 1983-04-21 | 1987-04-07 | Intelli-Tech Corporation | LIMIS systems, devices and methods |
US4599583A (en) | 1983-11-19 | 1986-07-08 | Fujitsu Limited | Mixed dual frequency generating system |
US4494114B1 (en) | 1983-12-05 | 1996-10-15 | Int Electronic Tech | Security arrangement for and method of rendering microprocessor-controlled electronic equipment inoperative after occurrence of disabling event |
US4754255A (en) | 1984-03-12 | 1988-06-28 | Sanders Rudy T | User identifying vehicle control and security device |
US4675656A (en) | 1984-03-16 | 1987-06-23 | Narcisse Bernadine O | Out-of-range personnel monitor and alarm |
GB2161676B (en) | 1984-07-11 | 1988-05-25 | Stc Plc | Data transmission system |
US4598272A (en) | 1984-08-06 | 1986-07-01 | Cox Randall P | Electronic monitoring apparatus |
US5036537A (en) | 1984-11-19 | 1991-07-30 | General Instrument Corp. | Geographic black-out method for direct broadcast satellite system |
US4685131A (en) | 1985-03-11 | 1987-08-04 | General Instrument Corp. | Program blocking method for use in direct broadcast satellite system |
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
US4651157A (en) | 1985-05-07 | 1987-03-17 | Mets, Inc. | Security monitoring and tracking system |
US4630301B1 (en) | 1985-06-04 | 1999-09-07 | Well Made Toy Mfg Co | Voice activated echo generator |
WO1987003411A1 (en) | 1985-11-27 | 1987-06-04 | The Trustees Of Boston University | Pattern encoding system |
CA1277400C (en) | 1986-04-09 | 1990-12-04 | Uri Rapoport | Anti-theft and locating system |
US4776003A (en) | 1986-10-01 | 1988-10-04 | Harris Arlene J | Cellular mobile radio credit card system |
US4750197A (en) | 1986-11-10 | 1988-06-07 | Denekamp Mark L | Integrated cargo security system |
US5227776A (en) | 1987-03-18 | 1993-07-13 | Starefoss Carl E | Combined alarm, security and rescue system |
US4831647A (en) | 1987-06-02 | 1989-05-16 | Motorola, Inc. | Radiotelephone credit card data communications |
US4860336A (en) | 1987-06-02 | 1989-08-22 | Motorola, Inc. | Radiotelephone credit card data communications |
JPH0828691B2 (ja) | 1988-03-14 | 1996-03-21 | 富士通株式会社 | フレーム同期方式 |
US4926444A (en) | 1988-04-29 | 1990-05-15 | Scientific-Atlanta, Inc. | Data transmission method and apparatus by period shift keying (TSK) |
DE68922337T2 (de) | 1988-05-17 | 1995-08-31 | Casio Computer Co Ltd | Funkruf-Kommunikationssystem. |
GB8814456D0 (en) | 1988-06-17 | 1988-08-17 | Cleveland Innovative Technolog | Road vehicle locating system |
US4918425A (en) | 1988-07-25 | 1990-04-17 | Daniel E. Ely | Monitoring and locating system for an object attached to a transponder monitored by a base station having an associated ID code |
US4918717A (en) | 1988-08-23 | 1990-04-17 | Knight Protective Industries | Alarm system having bidirectional communication with secured area |
CA1317638C (en) | 1988-09-09 | 1993-05-11 | Stephen B. Meads | Mobile pay telephone system |
US4914651A (en) | 1988-09-20 | 1990-04-03 | Cellular Data, Inc. | Cellular data system |
US4977609A (en) | 1988-10-28 | 1990-12-11 | Gte Cellular Communications Corporation | Interface circuit for telecommunications devices |
US4965821A (en) | 1988-12-23 | 1990-10-23 | Gte Mobilnet Incorporated | Cellular mobile radiotelephone-based system for rental of mobile equipment |
US5726984A (en) | 1989-01-31 | 1998-03-10 | Norand Corporation | Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones |
US5191611A (en) | 1989-04-03 | 1993-03-02 | Lang Gerald S | Method and apparatus for protecting material on storage media and for transferring material on storage media to various recipients |
US5214556A (en) | 1989-04-14 | 1993-05-25 | Kilbel Joseph J | Video cassette recorder protection system |
US5428636A (en) | 1993-05-03 | 1995-06-27 | Norand Corporation | Radio frequency local area network |
IL93444A (en) | 1989-04-27 | 1994-05-30 | Motorola Inc | Method and unit for communication with communication systems with different operating modes |
US5081667A (en) | 1989-05-01 | 1992-01-14 | Clifford Electronics, Inc. | System for integrating a cellular telephone with a vehicle security system |
US5668803A (en) | 1989-06-29 | 1997-09-16 | Symbol Technologies, Inc. | Protocol for packet data communication system |
WO1991007044A1 (en) | 1989-10-31 | 1991-05-16 | Intelligence Technology Corporation | Data and voice transmission over a cellular telephone system |
US4941155A (en) | 1989-11-16 | 1990-07-10 | Bell Communications Research, Inc. | Method and circuitry for symbol timing and frequency offset estimation in time division multiple access radio systems |
US5025455A (en) | 1989-11-30 | 1991-06-18 | The United States Of America As Represented By The Administer, National Aeronautics And Space Administration | Phase ambiguity resolution for offset QPSK modulation systems |
US5301353A (en) | 1990-02-12 | 1994-04-05 | Motorola, Inc. | Communication system and apparatus |
GB2241623A (en) | 1990-02-28 | 1991-09-04 | Philips Electronic Associated | Vehicle location system |
US5014344A (en) | 1990-03-19 | 1991-05-07 | Motorola, Inc. | Method for synchronizing the transmissions in a simulcast transmission system |
US5127041A (en) | 1990-06-01 | 1992-06-30 | Spectrum Information Technologies, Inc. | System and method for interfacing computers to diverse telephone networks |
US5528232A (en) | 1990-06-15 | 1996-06-18 | Savi Technology, Inc. | Method and apparatus for locating items |
US5119504A (en) | 1990-07-19 | 1992-06-02 | Motorola, Inc. | Position aided subscriber unit for a satellite cellular system |
US5043736B1 (en) | 1990-07-27 | 1994-09-06 | Cae Link Corp | Cellular position location system |
US5134644A (en) | 1990-08-17 | 1992-07-28 | Senses International | Data communication device |
FR2666946B1 (fr) | 1990-09-17 | 1992-12-04 | Inst Francais Du Petrole | Methode et dispositif pour synchroniser sur un evenement exterieur, l'echantillonnage de signaux de mesure par un ensemble de numerisation du type a sur-echantillonnage. |
US5201071A (en) | 1990-09-26 | 1993-04-06 | Rockwell International Corporation | Method and apparatus for reducing the peak envelope voltage of an RF transmitter while maintaining signal average power |
US5365577A (en) | 1990-09-27 | 1994-11-15 | Radish Communications Systems, Inc. | Telecommunication display system |
JP3143123B2 (ja) | 1990-11-06 | 2001-03-07 | マイクロン・テクノロジー・インコーポレイテッド | デュアルモード電子識別システム |
US5218618A (en) | 1990-11-07 | 1993-06-08 | Hughes Aircraft Company | Cellular telephone service using spread spectrum transmission |
US5212831A (en) | 1990-11-28 | 1993-05-18 | Bell Communications Research, Inc. | Method and apparatus for autonomous adaptive frequency assignment in TDMA portable radio systems |
DE4038430A1 (de) | 1990-12-01 | 1992-06-04 | Basf Ag | Herbizide n-((1,3,5-triazin-2-yl)-aminocarbonyl) benzolsulfonamide |
US5305384A (en) | 1990-12-04 | 1994-04-19 | Chips International, Inc. | Apparatus, system and method for transmitting secure signals over narrow spaced channels |
US5155689A (en) | 1991-01-17 | 1992-10-13 | By-Word Technologies, Inc. | Vehicle locating and communicating method and apparatus |
US5734981A (en) | 1991-01-17 | 1998-03-31 | Highwaymaster Communications, Inc. | Method and apparatus for call delivery to a mobile unit |
CA2063901C (en) | 1991-03-25 | 2002-08-13 | Arunas G. Slekys | Cellular data overlay system |
MX9201267A (es) | 1991-03-29 | 1992-10-01 | Ericsson Telefon Ab L M | Trazado de ruta de servicio de comunicacion auxiliar. |
US5119403A (en) | 1991-04-09 | 1992-06-02 | Racal Data Communications Inc. | Superframes |
US5225842A (en) | 1991-05-09 | 1993-07-06 | Navsys Corporation | Vehicle tracking system employing global positioning system (gps) satellites |
FI96564C (fi) | 1991-07-08 | 1996-07-10 | Nokia Mobile Phones Ltd | Yksityispuhelinnumero solukkopuhelinjärjestelmässä |
US5347272A (en) | 1991-09-13 | 1994-09-13 | Fuji Xerox Co., Ltd. | System for determining communication routes in a network |
US5208446A (en) | 1991-09-19 | 1993-05-04 | Martinez Jerry R | Method and apparatus for validating credit information during home delivery of order |
US5390216A (en) | 1991-11-02 | 1995-02-14 | Robert Bosch Gmbh | Synchronization method for a mobile radiotelephone |
JP2500162B2 (ja) | 1991-11-11 | 1996-05-29 | 住友金属工業株式会社 | 耐食性に優れた高強度二相ステンレス鋼 |
FR2684507B1 (fr) | 1991-11-29 | 1994-09-30 | Sagem | Modem semi-duplex pour reseau de radiotelephones gsm. |
US5379224A (en) | 1991-11-29 | 1995-01-03 | Navsys Corporation | GPS tracking system |
US6266008B1 (en) | 1991-12-10 | 2001-07-24 | Charles D. Huston | System and method for determining freight container locations |
GB2262630B (en) | 1991-12-14 | 1996-04-10 | Technophone Ltd | Apparatus with menu-selected functions |
US5546445A (en) | 1991-12-26 | 1996-08-13 | Dennison; Everett | Cellular telephone system that uses position of a mobile unit to make call management decisions |
US5235633A (en) | 1991-12-26 | 1993-08-10 | Everett Dennison | Cellular telephone system that uses position of a mobile unit to make call management decisions |
US5539810A (en) | 1992-01-27 | 1996-07-23 | Highwaymaster Communications, Inc. | Data messaging in a communications network |
US5334974A (en) | 1992-02-06 | 1994-08-02 | Simms James R | Personal security system |
US5203012A (en) | 1992-02-10 | 1993-04-13 | Motorola, Inc. | Method and apparatus for optimum channel assignment |
CA2089123A1 (en) | 1992-03-04 | 1993-09-05 | Robert Edwin Penny, Jr. | Position locating transceiver |
US5245634A (en) | 1992-03-23 | 1993-09-14 | Motorola, Inc. | Base-site synchronization in a communication system |
US5282204A (en) | 1992-04-13 | 1994-01-25 | Racotek, Inc. | Apparatus and method for overlaying data on trunked radio |
US5223844B1 (en) | 1992-04-17 | 2000-01-25 | Auto Trac Inc | Vehicle tracking and security system |
US5410541A (en) | 1992-05-04 | 1995-04-25 | Ivon International, Inc. | System for simultaneous analog and digital communications over an analog channel |
US5396653A (en) | 1992-06-05 | 1995-03-07 | Nokia Mobile Phones Ltd. | Cellular telephone signalling circuit operable with different cellular telephone systems |
GB9215662D0 (en) | 1992-07-23 | 1992-09-09 | Workspace Technologies Limited | Conference assisting apparatus |
AU670955B2 (en) | 1992-08-04 | 1996-08-08 | Koninklijke Philips Electronics N.V. | Mobile radio system |
FI95983C (fi) | 1992-08-17 | 1996-04-10 | Nokia Telecommunications Oy | Järjestely telekopiosiirtoa varten digitaalisessa solukkoradioverkossa |
US5289372A (en) | 1992-08-18 | 1994-02-22 | Loral Aerospace Corp. | Global equipment tracking system |
JP2805565B2 (ja) | 1992-09-21 | 1998-09-30 | エヌ・ティ・ティ移動通信網株式会社 | 移動局における制御チャネル選択方法 |
US5410739A (en) | 1992-09-29 | 1995-04-25 | The Titan Corporation | Variable data message communication over voice communication channel |
US5418537A (en) | 1992-11-18 | 1995-05-23 | Trimble Navigation, Ltd. | Location of missing vehicles |
US5726893A (en) | 1992-12-17 | 1998-03-10 | Stanford Telecommunications, Inc. | Cellular telephone with voice-in-data modem |
US5365450A (en) | 1992-12-17 | 1994-11-15 | Stanford Telecommunications, Inc. | Hybrid GPS/data line unit for rapid, precise, and robust position determination |
SG45250A1 (en) | 1993-01-04 | 1998-01-16 | Intel Corp | Simultaneous transfer of control information with voice and data over a public switched telephone network line |
US5333175A (en) | 1993-01-28 | 1994-07-26 | Bell Communications Research, Inc. | Method and apparatus for dynamic power control in TDMA portable radio systems |
US5331635A (en) | 1993-02-12 | 1994-07-19 | Fuji Xerox Co., Ltd. | Network system having function of updating routing information |
US5587715A (en) | 1993-03-19 | 1996-12-24 | Gps Mobile, Inc. | Method and apparatus for tracking a moving object |
WO1994023404A1 (en) | 1993-04-01 | 1994-10-13 | Bruno Robert | System for selectively positioning and tracking a movable object or individual |
US5420592A (en) | 1993-04-05 | 1995-05-30 | Radix Technologies, Inc. | Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations |
US5509035A (en) | 1993-04-14 | 1996-04-16 | Qualcomm Incorporated | Mobile station operating in an analog mode and for subsequent handoff to another system |
US5510797A (en) | 1993-04-15 | 1996-04-23 | Trimble Navigation Limited | Provision of SPS timing signals |
US5673305A (en) | 1993-05-14 | 1997-09-30 | Worldwide Notification Systems, Inc. | Apparatus and method for tracking and reporting the location of a motor vehicle |
US5388247A (en) | 1993-05-14 | 1995-02-07 | Digital Equipment Corporation | History buffer control to reduce unnecessary allocations in a memory stream buffer |
WO1994029986A1 (en) | 1993-06-07 | 1994-12-22 | Tangible Domain, Inc. | Network link controller |
WO1994029824A1 (en) | 1993-06-10 | 1994-12-22 | Direkt, Inc. | Preselected distance monitoring and locating system |
US5389934A (en) | 1993-06-21 | 1995-02-14 | The Business Edge Group, Inc. | Portable locating system |
CA2126598C (en) | 1993-06-25 | 2001-12-11 | Yoshio Urabe | Waveform shaping method and equipment |
JP2518156B2 (ja) | 1993-07-19 | 1996-07-24 | 日本電気株式会社 | 無線通信システムのチャネル割当方式 |
US5363375A (en) | 1993-07-30 | 1994-11-08 | Bell Communications Research, Inc. | Method and apparatus for synchronizing timing among radio ports in wireless communications systems using hierarchical scheme |
EP0637152A1 (en) | 1993-07-30 | 1995-02-01 | International Business Machines Corporation | Method and apparatus to speed up the path selection in a packet switching network |
US5363376A (en) | 1993-07-30 | 1994-11-08 | Bell Communications Research, Inc. | Method and apparatus for synchronizing timing among radio ports in wireless communications systems |
US5388147A (en) | 1993-08-30 | 1995-02-07 | At&T Corp. | Cellular telecommunication switching system for providing public emergency call location information |
US5479482A (en) | 1993-08-30 | 1995-12-26 | At&T Corp. | Cellular terminal for providing public emergency call location information |
WO1995006996A1 (en) | 1993-08-31 | 1995-03-09 | Ericsson Ge Mobile Communications Inc. | Apparatus for storing messages in a cellular mobile terminal |
US5497149A (en) | 1993-09-02 | 1996-03-05 | Fast; Ray | Global security system |
US5438337A (en) | 1993-09-24 | 1995-08-01 | Northrop Grumman Corporation | Navigation system using re-transmitted GPS |
US5440491A (en) | 1993-10-19 | 1995-08-08 | Kabushiki Kaisha Toshiba | Pseudo GPS signal transmitting system in a base station |
US5544222A (en) | 1993-11-12 | 1996-08-06 | Pacific Communication Sciences, Inc. | Cellular digtial packet data mobile data base station |
US5479475A (en) | 1993-11-15 | 1995-12-26 | Qualcomm Incorporated | Method and system for providing communication between standard terminal equipment using a remote communication unit |
US5557254A (en) | 1993-11-16 | 1996-09-17 | Mobile Security Communications, Inc. | Programmable vehicle monitoring and security system having multiple access verification devices |
US5519403A (en) | 1993-11-29 | 1996-05-21 | Motorola, Inc. | Global positioning system communications multi-interface |
JP3107691B2 (ja) | 1993-12-03 | 2000-11-13 | 株式会社東芝 | 半導体記憶装置及びその製造方法 |
US5892454A (en) | 1993-12-21 | 1999-04-06 | Trimble Navigation Ltd. | Hybrid monitoring of location of a site confinee |
US6181253B1 (en) | 1993-12-21 | 2001-01-30 | Trimble Navigation Limited | Flexible monitoring of location and motion |
US5479480A (en) | 1993-12-30 | 1995-12-26 | At&T Corp. | Dual mode cellular modem |
US5581599A (en) | 1993-12-30 | 1996-12-03 | Northern Telecom Limited | Cordless telephone terminal |
US5555286A (en) | 1994-01-31 | 1996-09-10 | Tendler Technologies, Inc. | Cellular phone based automatic emergency vessel/vehicle location system |
US5459469A (en) | 1994-02-04 | 1995-10-17 | Stanford Telecommunications, Inc. | Air traffic surveillance and communication system |
CN1126539A (zh) | 1994-02-07 | 1996-07-10 | 哈罗德Ii·佩斯 | 移动位置报告装置及方法 |
US5422816A (en) | 1994-02-22 | 1995-06-06 | Trimble Navigation Limited | Portable personal navigation tracking system |
US5483549A (en) | 1994-03-04 | 1996-01-09 | Stanford Telecommunications, Inc. | Receiver having for charge-coupled-device based receiver signal processing |
CN1094275C (zh) | 1994-03-11 | 2002-11-13 | Ntt移动通信网株式会社 | 时间分集通信*** |
US5577105A (en) | 1994-03-11 | 1996-11-19 | U.S. Robotics, Inc. | Telephone call routing and switching techniques for data communications |
US5381129A (en) | 1994-03-23 | 1995-01-10 | Radio Systems, Inc. | Wireless pet containment system |
US5450130A (en) | 1994-03-30 | 1995-09-12 | Radius Inc. | Method and system for cell based image data compression |
US5625668A (en) | 1994-04-12 | 1997-04-29 | Trimble Navigation Limited | Position reporting cellular telephone |
US5590396A (en) | 1994-04-20 | 1996-12-31 | Ericsson Inc. | Method and apparatus for a deep-sleep mode in a digital cellular communication system |
US5504491A (en) | 1994-04-25 | 1996-04-02 | Chapman; Robert W. | Global status and position reporting system |
ES2101629B1 (es) | 1994-04-29 | 1998-03-01 | Alcatel Standard Electrica | Terminal celular fijo. |
US5461390A (en) | 1994-05-27 | 1995-10-24 | At&T Ipm Corp. | Locator device useful for house arrest and stalker detection |
GB2290005B (en) | 1994-05-28 | 1998-09-09 | Motorola Ltd | Communications system |
JPH088983A (ja) | 1994-06-15 | 1996-01-12 | Fujitsu Ltd | 装置間ディジタル信号伝送方法並びにディジタル信号送受信装置,ディジタル信号送信装置及びディジタル信号受信装置 |
US5543789A (en) | 1994-06-24 | 1996-08-06 | Shields Enterprises, Inc. | Computerized navigation system |
DE4424412A1 (de) | 1994-07-12 | 1996-01-18 | Esg Elektroniksystem Und Logis | Funktelekommunikationssystem mit Satelliten-Navigation |
US5550551A (en) | 1994-07-25 | 1996-08-27 | At&T Corp. | Position monitoring system and method |
US5619684A (en) | 1994-07-25 | 1997-04-08 | International Business Machines Corporation | Method and apparatus for consistent user interface in a multiple application personal communications device |
US6038310A (en) | 1994-08-01 | 2000-03-14 | British Telecommunications Public Limited Company | Service node for a telephony network |
US5630206A (en) | 1994-08-11 | 1997-05-13 | Stanford Telecommunications, Inc. | Position enhanced cellular telephone system |
US5515043A (en) | 1994-08-17 | 1996-05-07 | Berard; Alfredo J. | Cellular/GPS system for vehicle tracking |
GB9417600D0 (en) | 1994-09-01 | 1994-10-19 | British Telecomm | Navigation information system |
US5565858A (en) | 1994-09-14 | 1996-10-15 | Northrop Grumman Corporation | Electronic inventory system for stacked containers |
US6334219B1 (en) | 1994-09-26 | 2001-12-25 | Adc Telecommunications Inc. | Channel selection for a hybrid fiber coax network |
US5732326A (en) | 1994-09-30 | 1998-03-24 | Fujitsu Limited | Information guiding system and method of preventing borrower of portable terminal unit from forgetting to return it |
US6121922A (en) | 1994-10-12 | 2000-09-19 | Veridian Erim International, Inc. | Tracking system using miniaturized concealable communications module |
US5566173A (en) | 1994-10-12 | 1996-10-15 | Steinbrecher Corporation | Communication system |
US5650770A (en) | 1994-10-27 | 1997-07-22 | Schlager; Dan | Self-locating remote monitoring systems |
JP2596388B2 (ja) | 1994-10-28 | 1997-04-02 | 日本電気株式会社 | ディジタルコードレス電話システム |
US5594425A (en) | 1994-10-31 | 1997-01-14 | Peoplenet, Inc. | Locator device |
US5786789A (en) | 1994-11-14 | 1998-07-28 | Trimble Navigation Limited | GPS and cellphone unit having add-on modules |
US6300863B1 (en) | 1994-11-15 | 2001-10-09 | Absolute Software Corporation | Method and apparatus to monitor and locate an electronic device using a secured intelligent agent via a global network |
US6269392B1 (en) | 1994-11-15 | 2001-07-31 | Christian Cotichini | Method and apparatus to monitor and locate an electronic device using a secured intelligent agent |
US5913170A (en) | 1994-11-16 | 1999-06-15 | Highwaymaster Communications, Inc. | Locating system and method using a mobile communications network |
US5576716A (en) | 1994-12-07 | 1996-11-19 | Sadler; Kermit M. | Owner oriented system for locating lost or stolen property |
US6226529B1 (en) | 1994-12-08 | 2001-05-01 | Itt Manufacturing Enterprises, Inc. | System for providing a simultaneous data and voice channel within a single channel of a portable cellular telephone to provide position-enhanced cellular services (PECS) |
US5517683A (en) | 1995-01-18 | 1996-05-14 | Cycomm Corporation | Conformant compact portable cellular phone case system and connector |
DE19501517C1 (de) | 1995-01-19 | 1996-05-02 | Siemens Ag | Verfahren, Sendegerät und Empfangsgerät zur Übertragung von Sprachinformation |
US6009325A (en) | 1995-02-01 | 1999-12-28 | Motorola, Inc. | Method of and apparatus for operating a cellular phone in one of two modes |
US5724243A (en) | 1995-02-10 | 1998-03-03 | Highwaymaster Communications, Inc. | Method and apparatus for determining expected time of arrival |
KR0140130B1 (ko) | 1995-03-07 | 1998-07-01 | 김주용 | 디지탈이동통신 시스템 장치 및 각 서브시스템 간의 타이밍 설계 방법 |
US5797091A (en) | 1995-03-07 | 1998-08-18 | Xypoint Corporation | Personal communication system and method of use |
US5608375A (en) | 1995-03-20 | 1997-03-04 | Wheelock Inc. | Synchronized visual/audible alarm system |
CA2171485C (en) | 1995-03-23 | 1999-10-12 | Shrirang Jangi | Dtmf tone passer in a voice communication system |
US5812522A (en) | 1995-03-31 | 1998-09-22 | Airtouch Communications, Inc. | Location-ruled radio-integrated network |
FR2732509B1 (fr) | 1995-03-31 | 1997-06-13 | Sgs Thomson Microelectronics | Boitier de montage d'une puce de circuit integre |
US5532690A (en) | 1995-04-04 | 1996-07-02 | Itt Corporation | Apparatus and method for monitoring and bounding the path of a ground vehicle |
US5686910A (en) | 1995-04-10 | 1997-11-11 | Ford Motor Company | Vehicular emergency message system with automatic periodic call-in |
US5572204A (en) | 1995-04-10 | 1996-11-05 | Ford Motor Company | Vehicular emergency message system |
US5687215A (en) | 1995-04-10 | 1997-11-11 | Ford Motor Company | Vehicular emergency message system |
US5691980A (en) | 1995-06-07 | 1997-11-25 | General Electric Company | Local communication network for power reduction and enhanced reliability in a multiple node tracking system |
US5752186A (en) | 1995-06-07 | 1998-05-12 | Jeman Technologies, Inc. | Access free wireless telephony fulfillment service system |
US5798693A (en) | 1995-06-07 | 1998-08-25 | Engellenner; Thomas J. | Electronic locating systems |
US5717406A (en) | 1995-06-07 | 1998-02-10 | Sanconix Inc. | Enhanced position calculation |
FI952844A (fi) | 1995-06-09 | 1996-12-10 | Nokia Mobile Phones Ltd | Menetelmä kanavanvaihdon parantamiseksi |
US5752193A (en) | 1995-09-01 | 1998-05-12 | Motorola, Inc. | Method and apparatus for communicating in a wireless communication system |
US5774837A (en) | 1995-09-13 | 1998-06-30 | Voxware, Inc. | Speech coding system and method using voicing probability determination |
US6133871A (en) | 1995-10-09 | 2000-10-17 | Snaptrack, Inc. | GPS receiver having power management |
US5841396A (en) | 1996-03-08 | 1998-11-24 | Snaptrack, Inc. | GPS receiver utilizing a communication link |
US6131067A (en) | 1995-10-09 | 2000-10-10 | Snaptrack, Inc. | Client-server based remote locator device |
US5884214A (en) | 1996-09-06 | 1999-03-16 | Snaptrack, Inc. | GPS receiver and method for processing GPS signals |
US6002363A (en) | 1996-03-08 | 1999-12-14 | Snaptrack, Inc. | Combined GPS positioning system and communications system utilizing shared circuitry |
US5825327A (en) | 1996-03-08 | 1998-10-20 | Snaptrack, Inc. | GPS receivers and garments containing GPS receivers and methods for using these GPS receivers |
US5831574A (en) | 1996-03-08 | 1998-11-03 | Snaptrack, Inc. | Method and apparatus for determining the location of an object which may have an obstructed view of the sky |
US5805576A (en) | 1995-10-18 | 1998-09-08 | Cellular Telecom, Ltd. | Method and apparatus for TDMA wireless communication employing collector arrays for range extension |
US5627517A (en) | 1995-11-01 | 1997-05-06 | Xerox Corporation | Decentralized tracking and routing system wherein packages are associated with active tags |
US5826188A (en) | 1995-12-07 | 1998-10-20 | Motorola, Inc. | Method and apparatus for handing off calls between differing radio telecommunication networks |
WO1997021314A1 (en) | 1995-12-07 | 1997-06-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Emergency call handling in a cellular telecommunications system |
US5991279A (en) | 1995-12-07 | 1999-11-23 | Vistar Telecommunications Inc. | Wireless packet data distributed communications system |
JPH09172685A (ja) | 1995-12-19 | 1997-06-30 | Sony Corp | 無線通信システム及び通信方法並びに移動通信端末装置 |
US5835907A (en) | 1995-12-20 | 1998-11-10 | Mci Communications Corporation | Emergency PCS system for identification and notification of a subscriber's location |
US5918180A (en) | 1995-12-22 | 1999-06-29 | Dimino; Michael | Telephone operable global tracking system for vehicles |
US5842141A (en) | 1996-01-01 | 1998-11-24 | Nokia Mobile Phones Limited | Mobile terminal having user-actuated pager mode |
US5960363A (en) | 1996-01-24 | 1999-09-28 | Sony Corporation | Tone generating apparatus for a cellular telephone to simulate tones normally sensed by a user of a land-line telephone |
US5778024A (en) * | 1996-02-01 | 1998-07-07 | Qualcomm Incorporated | Dual-mode communications processor |
JP2785789B2 (ja) | 1996-02-09 | 1998-08-13 | 日本電気株式会社 | ディジタル移動通信システム |
US6133874A (en) | 1996-03-08 | 2000-10-17 | Snaptrack, Inc. | Method and apparatus for acquiring satellite positioning system signals |
US5748083A (en) | 1996-03-11 | 1998-05-05 | Security Solutions Plus | Computer asset protection apparatus and method |
US5815114A (en) | 1996-04-05 | 1998-09-29 | Discovision Associates | Positioning system and method |
US5850392A (en) | 1996-04-10 | 1998-12-15 | Ericsson Inc. | Spread spectrum random access systems and methods for time division multiple access radiotelephone communication systems |
US6173194B1 (en) | 1996-04-15 | 2001-01-09 | Nokia Mobile Phones Limited | Mobile terminal having improved user interface |
US5712619A (en) | 1996-04-18 | 1998-01-27 | Simkin; Alan C. | Global positioning system personal alarm |
US5637355A (en) | 1996-04-22 | 1997-06-10 | Rmt, Inc. | Method of nonhazardous removal of paint containing heavy metals and coating preparation for performing the same |
JP3606498B2 (ja) | 1996-04-26 | 2005-01-05 | 三菱電機株式会社 | 携帯情報端末装置 |
US5864578A (en) | 1996-04-29 | 1999-01-26 | Golden Bridge Technology, Inc. | Matched filter-based handoff method and apparatus |
US6067457A (en) | 1996-04-30 | 2000-05-23 | Motorola, Inc. | Method for dynamically assigning priority to a call |
US5838237A (en) | 1996-05-22 | 1998-11-17 | Revell; Graeme Charles | Personal alarm device |
US5703598A (en) | 1996-05-24 | 1997-12-30 | Emmons; Ardath H. | Method and system for tracking stolen property |
US5796808A (en) | 1997-01-09 | 1998-08-18 | Paradyne Corporation | System and method for automatically selecting the mode of communication between a plurality of modems |
US5804810A (en) | 1996-06-26 | 1998-09-08 | Par Government Systems Corporation | Communicating with electronic tags |
US5774876A (en) | 1996-06-26 | 1998-06-30 | Par Government Systems Corporation | Managing assets with active electronic tags |
US5892441A (en) | 1996-06-26 | 1999-04-06 | Par Government Systems Corporation | Sensing with active electronic tags |
US5825283A (en) | 1996-07-03 | 1998-10-20 | Camhi; Elie | System for the security and auditing of persons and property |
US5784422A (en) | 1996-08-05 | 1998-07-21 | Transcrypt International, Inc. | Apparatus and method for accurate synchronization with inbound data packets at relatively low sampling rates |
JPH1047982A (ja) | 1996-08-06 | 1998-02-20 | Sony Corp | 位置測定装置、位置測定方法、ナビゲーション装置、ナビゲーション方法、情報サービス方法及び自動車 |
US5731757A (en) | 1996-08-19 | 1998-03-24 | Pro Tech Monitoring, Inc. | Portable tracking apparatus for continuous position determination of criminal offenders and victims |
US5881373A (en) | 1996-08-28 | 1999-03-09 | Telefonaktiebolaget Lm Ericsson | Muting a microphone in radiocommunication systems |
US6185427B1 (en) | 1996-09-06 | 2001-02-06 | Snaptrack, Inc. | Distributed satellite position system processing and application network |
US6014376A (en) | 1996-09-18 | 2000-01-11 | Motorola, Inc. | Method for over-the-air synchronization adjustment in a communication system |
US6069570A (en) | 1996-09-20 | 2000-05-30 | Atx Technologies, Inc. | Asset location system |
US5864763A (en) | 1996-09-24 | 1999-01-26 | Qualcomm Inc | Digital wireless telephone system interface for analog telecommunications equipment |
US5961608A (en) | 1996-10-04 | 1999-10-05 | Sony Corporation | Modem and communications control selection |
US5790842A (en) | 1996-10-11 | 1998-08-04 | Divicom, Inc. | Processing system with simultaneous utilization of multiple clock signals |
US6014089A (en) | 1996-10-28 | 2000-01-11 | Tracy Corporation Ii | Method for transmitting data using a digital control channel of a wireless network |
US5963130A (en) | 1996-10-28 | 1999-10-05 | Zoltar Satellite Alarm Systems, Inc. | Self-locating remote monitoring systems |
US6018654A (en) | 1996-10-29 | 2000-01-25 | Ericsson Inc | Method and apparatus for downloading tones to mobile terminals |
US5978676A (en) | 1996-11-15 | 1999-11-02 | Telefonaktiebolaget L/M Ericsson (Publ) | Inband signal converter, and associated method, for a digital communication system |
US5748084A (en) | 1996-11-18 | 1998-05-05 | Isikoff; Jeremy M. | Device security system |
US5771001A (en) | 1996-11-18 | 1998-06-23 | Cobb; Marlon J. | Personal alarm system |
US5856986A (en) | 1996-11-25 | 1999-01-05 | Texas Instruments Incorporated | Synchronization field pattern selection |
US6011973A (en) | 1996-12-05 | 2000-01-04 | Ericsson Inc. | Method and apparatus for restricting operation of cellular telephones to well delineated geographical areas |
US5911129A (en) | 1996-12-13 | 1999-06-08 | Intel Corporation | Audio font used for capture and rendering |
WO1998030052A1 (fr) | 1996-12-26 | 1998-07-09 | Ntt Mobile Communications Network Inc. | Procede de transfert entre cellules |
GB2320862B (en) | 1996-12-27 | 2001-11-21 | Roke Manor Research | Data communications system |
US6122514A (en) | 1997-01-03 | 2000-09-19 | Cellport Systems, Inc. | Communications channel selection |
US5946304A (en) | 1997-01-08 | 1999-08-31 | Paradyne Corporation | Method and apparatus for controlling the operation of a modem capable of transmitting and receiving both voice and data signals |
US5742233A (en) | 1997-01-21 | 1998-04-21 | Hoffman Resources, Llc | Personal security and tracking system |
US5940598A (en) | 1997-01-28 | 1999-08-17 | Bell Atlantic Network Services, Inc. | Telecommunications network to internetwork universal server |
GB2321827B (en) | 1997-01-31 | 2001-06-13 | Ericsson Telefon Ab L M | Telecommunications system |
GB2321812B (en) | 1997-02-01 | 2001-02-21 | Ico Services Ltd | User terminal positioning system and method employing external signals |
US5812087A (en) | 1997-02-03 | 1998-09-22 | Snaptrack, Inc. | Method and apparatus for satellite positioning system based time measurement |
US6289041B1 (en) | 1997-02-11 | 2001-09-11 | Snaptrack, Inc. | Fast Acquisition, high sensitivity GPS receiver |
US6055434A (en) | 1997-02-11 | 2000-04-25 | Ericsson Inc. | Method and system for locating a mobile station within a mobile telecommunications network |
US6359923B1 (en) | 1997-12-18 | 2002-03-19 | At&T Wireless Services, Inc. | Highly bandwidth efficient communications |
US6470046B1 (en) | 1997-02-26 | 2002-10-22 | Paradyne Corporation | Apparatus and method for a combined DSL and voice system |
US5970130A (en) | 1997-02-26 | 1999-10-19 | Dynamic Telcom Engineering, L.L.C. | Independent central office which provides local and long distance calling services to new residential and commercial developments |
US5933468A (en) | 1997-03-06 | 1999-08-03 | Telefonaktiebolaget L M Ericsson (Publ) | Continuous synchronization adjustment in a telecommunications system |
US6304637B1 (en) | 1997-03-14 | 2001-10-16 | Itxc, Inc. | Method and apparatus for establishing and facilitating a direct quality voice call to a telephone extension on behalf of a client computer |
US6175307B1 (en) | 1997-03-18 | 2001-01-16 | Digital Security Controls Ltd. | Security system with audible link and two-way communication |
US6138224A (en) | 1997-04-04 | 2000-10-24 | International Business Machines Corporation | Method for paging software wavetable synthesis samples |
JP3940200B2 (ja) | 1997-04-09 | 2007-07-04 | 株式会社イシダ | 製袋包装機 |
US5886634A (en) | 1997-05-05 | 1999-03-23 | Electronic Data Systems Corporation | Item removal system and method |
US6690681B1 (en) | 1997-05-19 | 2004-02-10 | Airbiquity Inc. | In-band signaling for data communications over digital wireless telecommunications network |
US6771629B1 (en) | 1999-01-15 | 2004-08-03 | Airbiquity Inc. | In-band signaling for synchronization in a voice communications network |
US6493338B1 (en) | 1997-05-19 | 2002-12-10 | Airbiquity Inc. | Multichannel in-band signaling for data communications over digital wireless telecommunications networks |
US7164662B2 (en) | 1997-05-19 | 2007-01-16 | Airbiquity, Inc. | Network delay identification method and apparatus |
US6144336A (en) | 1997-05-19 | 2000-11-07 | Integrated Data Communications, Inc. | System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks |
USD395250S (en) | 1997-05-29 | 1998-06-16 | Garmin Corporation | Combined hand held communication receiver and GPS device |
US6356560B1 (en) | 1997-05-30 | 2002-03-12 | Adtran, Inc. | Arbitration mechanism for statistically multiplexed frame relay switching system |
US6522265B1 (en) | 1997-06-25 | 2003-02-18 | Navox Corporation | Vehicle tracking and security system incorporating simultaneous voice and data communication |
US6140956A (en) | 1997-06-25 | 2000-10-31 | Cellutrac, Inc. | Vehicle tracking and security system incorporating simultaneous voice and data communication |
EP0889610B1 (en) | 1997-07-01 | 2005-12-21 | Alcatel | SPS synchronization method |
US6122271A (en) | 1997-07-07 | 2000-09-19 | Motorola, Inc. | Digital communication system with integral messaging and method therefor |
US5930340A (en) | 1997-07-07 | 1999-07-27 | Advanced Micro Devices | Device and method for isolating voice and data signals on a common carrier |
US5963134A (en) | 1997-07-24 | 1999-10-05 | Checkpoint Systems, Inc. | Inventory system using articles with RFID tags |
US6707421B1 (en) | 1997-08-19 | 2004-03-16 | Siemens Vdo Automotive Corporation | Driver information system |
JP2931276B2 (ja) | 1997-09-04 | 1999-08-09 | 豊喜 笹倉 | 機器の使用制限装置 |
US6301480B1 (en) | 1997-09-05 | 2001-10-09 | @Track Communications, Inc. | System and method for communicating using a voice network and a data network |
US6076099A (en) | 1997-09-09 | 2000-06-13 | Chen; Thomas C. H. | Method for configurable intelligent-agent-based wireless communication system |
BR9812246A (pt) | 1997-09-18 | 2000-07-18 | Nokia Mobile Phones Ltd | Diversidade de tempo em sistema tdma |
US6212207B1 (en) | 1997-09-26 | 2001-04-03 | 3Com Corporation | Robbed bit signal detection and compensation |
US6006189A (en) | 1997-10-10 | 1999-12-21 | Nortel Networks Corporation | Method and apparatus for storing and forwarding voice signals |
US6295461B1 (en) | 1997-11-03 | 2001-09-25 | Intermec Ip Corp. | Multi-mode radio frequency network system |
US6272315B1 (en) | 1997-12-03 | 2001-08-07 | Northern Telecom Limited | Mobile satellite system/terrestrial wireless system interworking techniques |
US6081523A (en) | 1997-12-05 | 2000-06-27 | Advanced Micro Devices, Inc. | Arrangement for transmitting packet data segments from a media access controller across multiple physical links |
US6526026B1 (en) | 1997-12-10 | 2003-02-25 | Intel Corporation | Digit transmission over wireless communication link |
US5881069A (en) | 1997-12-12 | 1999-03-09 | Motorola, Inc. | Method and apparatus for error correction processing in a radio communication device |
US6208959B1 (en) | 1997-12-15 | 2001-03-27 | Telefonaktibolaget Lm Ericsson (Publ) | Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel |
US6032037A (en) | 1997-12-16 | 2000-02-29 | Sur-Gard Security Systems Ltd. | Alarm panel with cellular communications backup |
US6014090A (en) | 1997-12-22 | 2000-01-11 | At&T Corp. | Method and apparatus for delivering local information to travelers |
US6249227B1 (en) | 1998-01-05 | 2001-06-19 | Intermec Ip Corp. | RFID integrated in electronic assets |
US5936526A (en) | 1998-01-13 | 1999-08-10 | Micron Electronics, Inc. | Apparatus for generating an alarm in a portable computer system |
US6107960A (en) | 1998-01-20 | 2000-08-22 | Snaptrack, Inc. | Reducing cross-interference in a combined GPS receiver and communication system |
US7430257B1 (en) | 1998-02-12 | 2008-09-30 | Lot 41 Acquisition Foundation, Llc | Multicarrier sub-layer for direct sequence channel and multiple-access coding |
US5955992A (en) | 1998-02-12 | 1999-09-21 | Shattil; Steve J. | Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter |
US6101395A (en) | 1998-02-13 | 2000-08-08 | Intel Corporation | Method and apparatus for optimizing call setup traffic in a communications network with out-of-band call control signaling |
US6038595A (en) | 1998-03-02 | 2000-03-14 | Emc Corporation | Information/communication device for network based services and a system for use of information/communication based services |
US6044257A (en) | 1998-03-19 | 2000-03-28 | American Secure Care, Llc | Panic button phone |
US6112084A (en) | 1998-03-24 | 2000-08-29 | Telefonaktiebolaget Lm Ericsson | Cellular simultaneous voice and data including digital simultaneous voice and data (DSVD) interwork |
US5949335A (en) | 1998-04-14 | 1999-09-07 | Sensormatic Electronics Corporation | RFID tagging system for network assets |
US5999124A (en) | 1998-04-22 | 1999-12-07 | Snaptrack, Inc, | Satellite positioning system augmentation with wireless communication signals |
AU4181199A (en) | 1998-04-28 | 1999-11-16 | Snaptrack, Inc. | Method and apparatus for providing location-based information via a computer network |
US6308060B2 (en) | 1998-06-15 | 2001-10-23 | @Track Communications, Inc. | Method and apparatus for providing a communication path using a paging network |
US6024142A (en) | 1998-06-25 | 2000-02-15 | Micron Communications, Inc. | Communications system and method, fleet management system and method, and method of impeding theft of fuel |
CA2242495A1 (en) | 1998-07-06 | 2000-01-06 | Northern Telecom Limited | Data network node connection establishment |
US6525842B1 (en) | 1998-07-09 | 2003-02-25 | Canon Kabushiki Kaisha | Image processing apparatus and method of the same and storage medium |
CN1257368A (zh) | 1998-07-24 | 2000-06-21 | 休斯电子公司 | 通信***中的扩展接口单元 |
US6405033B1 (en) | 1998-07-29 | 2002-06-11 | Track Communications, Inc. | System and method for routing a call using a communications network |
US6084517A (en) | 1998-08-12 | 2000-07-04 | Rabanne; Michael C. | System for tracking possessions |
US6091969A (en) | 1998-08-21 | 2000-07-18 | Motorola, Inc. | Method and apparatus for inband signaling control of vocoder bypass |
ATE385143T1 (de) | 1998-08-21 | 2008-02-15 | Motorola Inc | Verfahren und vorrichtung zur kontrolle einer sprachkodierumgehung mittels inbandsignalisierung |
US6434198B1 (en) | 1998-08-28 | 2002-08-13 | Lucent Technologies Inc. | Method for conveying TTY signals over wireless communication systems |
US6351495B1 (en) | 1998-08-28 | 2002-02-26 | Lucent Technologies Inc. | Apparatus and method for conveying TTY signals over wireless telecommunication systems |
US6683855B1 (en) | 1998-08-31 | 2004-01-27 | Lucent Technologies Inc. | Forward error correction for high speed optical transmission systems |
US6067044A (en) | 1998-09-21 | 2000-05-23 | National Systems And Research Company | Remote tracking and sensing system and method |
US6741581B1 (en) | 1998-09-22 | 2004-05-25 | Hughes Electronics Corporation | System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames |
US6778645B1 (en) | 1998-10-30 | 2004-08-17 | Intel Corporation | Method and apparatus for coordinating a point to point data session from an existing voice telephone call |
ATE316730T1 (de) | 1998-11-02 | 2006-02-15 | Airbiquity Inc | Geo-räumliche adressierung zum internet-protokoll |
US6430176B1 (en) | 1998-11-06 | 2002-08-06 | Nortel Networks Limited | Multimedia channel management through PSTN signaling |
US6343217B1 (en) | 1998-11-12 | 2002-01-29 | Legerity, Inc. | Digital cordless telephony with PCM coding |
US6373842B1 (en) | 1998-11-19 | 2002-04-16 | Nortel Networks Limited | Unidirectional streaming services in wireless systems |
US6614781B1 (en) | 1998-11-20 | 2003-09-02 | Level 3 Communications, Inc. | Voice over data telecommunications network architecture |
US6154658A (en) | 1998-12-14 | 2000-11-28 | Lockheed Martin Corporation | Vehicle information and safety control system |
US6690922B1 (en) | 1998-12-23 | 2004-02-10 | Honeywell International Inc. | Radio frequency (RF) system loss compensation method using power measurement of pulsed RF source |
US6282430B1 (en) | 1999-01-01 | 2001-08-28 | Motorola, Inc. | Method for obtaining control information during a communication session in a radio communication system |
GB2346291B (en) | 1999-01-26 | 2004-01-21 | Ericsson Telefon Ab L M | Handling menu information |
US6754265B1 (en) | 1999-02-05 | 2004-06-22 | Honeywell International Inc. | VOCODER capable modulator/demodulator |
US6747571B2 (en) | 1999-03-08 | 2004-06-08 | Comverge Technologies, Inc. | Utility meter interface system |
SE521472C2 (sv) | 1999-03-16 | 2003-11-04 | Ericsson Telefon Ab L M | Portabel kommunikationsapparat med dynamisk meny |
US6519260B1 (en) | 1999-03-17 | 2003-02-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Reduced delay priority for comfort noise |
US6166688A (en) | 1999-03-31 | 2000-12-26 | International Business Machines Corporation | Data processing system and method for disabling a portable computer outside an authorized area |
US6765931B1 (en) | 1999-04-13 | 2004-07-20 | Broadcom Corporation | Gateway with voice |
US6345251B1 (en) | 1999-06-15 | 2002-02-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Low-rate speech coder for non-speech data transmission |
US6611804B1 (en) | 1999-06-15 | 2003-08-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Universal TTY/TDD devices for robust text and data transmission via PSTN and cellular phone networks |
US6321091B1 (en) | 1999-07-29 | 2001-11-20 | Bryan Holland | Portable locator system and method |
US6453168B1 (en) | 1999-08-02 | 2002-09-17 | Itt Manufacturing Enterprises, Inc | Method and apparatus for determining the position of a mobile communication device using low accuracy clocks |
KR100337882B1 (ko) | 1999-10-26 | 2002-05-23 | 김순택 | 플라즈마 표시 패널의 구동방법 |
US6300875B1 (en) | 1999-11-22 | 2001-10-09 | Mci Worldcom, Inc. | Method and apparatus for high efficiency position information reporting |
US6358145B1 (en) | 1999-11-29 | 2002-03-19 | Strottman International | Broadcast sweepstakes game system and game piece device |
US6307471B1 (en) | 1999-12-01 | 2001-10-23 | Ensure Technologies, Inc. | Radio based proximity token with multiple antennas |
US6614349B1 (en) | 1999-12-03 | 2003-09-02 | Airbiquity Inc. | Facility and method for tracking physical assets |
US6516198B1 (en) | 1999-12-06 | 2003-02-04 | Tendler Cellular Inc | System for location reporting |
GB2357611B (en) | 1999-12-21 | 2004-06-02 | Ibm | Electronic location tag |
SE520919C2 (sv) | 1999-12-29 | 2003-09-16 | Volvo Technology Corp | System och metod för kommunikation mellan en central station och ett på avstånd beläget objekt |
US6628967B1 (en) | 1999-12-30 | 2003-09-30 | Nortel Networks Limited | Wireless communication device capable to transmit/receive TTY/TDD messages with variable data rate, embedded into audio data frames |
US6362736B1 (en) | 2000-01-04 | 2002-03-26 | Lucent Technologies Inc. | Method and apparatus for automatic recovery of a stolen object |
US6603977B1 (en) | 2000-02-04 | 2003-08-05 | Sbc Properties, Lp | Location information system for a wireless communication device and method therefor |
JP2001238256A (ja) | 2000-02-21 | 2001-08-31 | Hitachi Kokusai Electric Inc | 可変速度符号化システム |
ES2362506T3 (es) * | 2000-03-21 | 2011-07-06 | Airbiquity, Inc. | Modem de audiofrecuencia para la comunicación de datos en redes digitales inalámbricas. |
JP3551890B2 (ja) * | 2000-04-10 | 2004-08-11 | 村田機械株式会社 | 通信端末装置 |
EP1273105B1 (en) | 2000-04-11 | 2006-03-15 | AirNet Communications Corporation | Method and system employing wireless in-band signaling for downlink transmission of commands |
EP1796083B1 (en) | 2000-04-24 | 2009-01-07 | Qualcomm Incorporated | Method and apparatus for predictively quantizing voiced speech |
FI109061B (fi) | 2000-05-10 | 2002-05-15 | Nokia Corp | Resurssien varaaminen pakettiverkossa |
CN1295905C (zh) | 2000-05-17 | 2007-01-17 | 希姆巨姆第二技术控股有限公司 | 八音度脉冲数据传送方法及其装置 |
US20060246910A1 (en) | 2000-05-31 | 2006-11-02 | Jerry Petermann | Wireless devices for use with a wireless communications system with articial intelligence-based distributive call routing |
GB2364480B (en) | 2000-06-30 | 2004-07-14 | Mitel Corp | Method of using speech recognition to initiate a wireless application (WAP) session |
US6327533B1 (en) | 2000-06-30 | 2001-12-04 | Geospatial Technologies, Inc. | Method and apparatus for continuously locating an object |
JP3335617B2 (ja) | 2000-08-04 | 2002-10-21 | 松下電器産業株式会社 | 緊急通報システム端末機器、緊急通報システムおよび緊急通報システム端末機器制御方法 |
US20020022465A1 (en) | 2000-08-15 | 2002-02-21 | Mccullagh Michael J. | Apparatus and method for integrated frequency hopping and GPS receiver |
WO2002015519A2 (en) | 2000-08-17 | 2002-02-21 | Mobileum, Inc. | Method and system for wireless voice channel/data channel integration |
KR100525384B1 (ko) | 2000-10-31 | 2005-11-02 | 엘지전자 주식회사 | 무선 통신 시스템에서의 패킷 재전송 제어 방법 |
US20020085703A1 (en) | 2001-01-02 | 2002-07-04 | Proctor Rod L. | Facility and method for cellular data communication between hearing impaired users and emergency service centers |
US6845153B2 (en) | 2001-01-31 | 2005-01-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Network independent party addressing using a unique identifier linked to network specific addresses |
US20020111167A1 (en) | 2001-02-13 | 2002-08-15 | Telefonaktiebolaget Lm Ericsson (Publ). | System and method of providing voice and data features in a time division multiple access (TDMA) network |
US20020122401A1 (en) | 2001-03-02 | 2002-09-05 | Zeng-Jun Xiang | System and method in a wireless telecommunication network for placing a voice call on hold and conducting a data session |
US6799050B1 (en) | 2001-06-04 | 2004-09-28 | Snaptrack, Inc. | Reducing cross-interference in a combined GPS receiver and communication system |
US20030016639A1 (en) | 2001-07-19 | 2003-01-23 | Ericsson Inc. | Telecommunications system and method for delivery of short message service messages to a mobile terminal in data mode |
US7283904B2 (en) | 2001-10-17 | 2007-10-16 | Airbiquity, Inc. | Multi-sensor fusion |
WO2003034235A1 (en) | 2001-10-17 | 2003-04-24 | Infocus Corporation | Dataconferencing method, appliance, and system |
US7215965B2 (en) | 2001-11-01 | 2007-05-08 | Airbiquity Inc. | Facility and method for wireless transmission of location data in a voice channel of a digital wireless telecommunications network |
US6981022B2 (en) | 2001-11-02 | 2005-12-27 | Lucent Technologies Inc. | Using PSTN to convey participant IP addresses for multimedia conferencing |
US6700867B2 (en) | 2001-12-20 | 2004-03-02 | Motorola, Inc. | Method and system for reduced memory hybrid automatic repeat request |
JP3486620B2 (ja) * | 2002-03-18 | 2004-01-13 | キヤノン株式会社 | データ通信装置 |
US7102640B1 (en) | 2002-03-21 | 2006-09-05 | Nokia Corporation | Service/device indication with graphical interface |
US20030212562A1 (en) | 2002-05-13 | 2003-11-13 | General Motors Corporation | Manual barge-in for server-based in-vehicle voice recognition systems |
US7269188B2 (en) | 2002-05-24 | 2007-09-11 | Airbiquity, Inc. | Simultaneous voice and data modem |
US20030227939A1 (en) | 2002-06-05 | 2003-12-11 | Satoru Yukie | Establishing a connection using a hybrid receiver |
US20040034529A1 (en) | 2002-08-14 | 2004-02-19 | Hooper Howard Gaines | Multifunction printer that converts and prints voice data |
US7562393B2 (en) | 2002-10-21 | 2009-07-14 | Alcatel-Lucent Usa Inc. | Mobility access gateway |
DE10249867A1 (de) | 2002-10-25 | 2004-05-13 | Siemens Ag | Verfahren und Einrichtung zur Auswahl eines Netzzugangs zu einem oder mehreren Datennetzen über ein Telekommuniktionsendgerät |
US7653383B2 (en) | 2003-02-28 | 2010-01-26 | Motorola, Inc. | Method and apparatus for remote data access in a mobile communication device |
US6983171B2 (en) | 2003-02-28 | 2006-01-03 | Motorola, Inc. | Device and method for communicating teletype information in a vehicle communication system |
US8010124B2 (en) | 2003-03-24 | 2011-08-30 | Sony Ericsson Mobile Communications Ab | Methods, systems and computer program products for providing location determination information to an assisted location service |
US8359197B2 (en) * | 2003-04-01 | 2013-01-22 | Digital Voice Systems, Inc. | Half-rate vocoder |
US7206574B2 (en) | 2003-04-17 | 2007-04-17 | Lucent Technologies Inc. | Automated exchange of broadband communication addresses over a non-broadband channel in a wireless telecommunication system |
US7330453B1 (en) | 2003-05-31 | 2008-02-12 | 3Com Corporation | System and method for integrating call control and data network access components |
US7398100B2 (en) | 2003-07-01 | 2008-07-08 | Motorola, Inc. | Method, apparatus and system for use in controlling transmission power during wireless communication |
US7583959B2 (en) | 2003-07-07 | 2009-09-01 | At&T Mobility Ii Llc | One button access to network services from a remote control device |
TWI229980B (en) | 2003-11-20 | 2005-03-21 | Syncomm Technology Corp | De-mapping method for wireless communications systems |
US7688260B2 (en) | 2004-08-26 | 2010-03-30 | Global Locate, Inc. | Method and apparatus for locating position of a mobile device in an assisted satellite positioning system |
US7194438B2 (en) | 2004-02-25 | 2007-03-20 | Nokia Corporation | Electronic payment schemes in a mobile environment for short-range transactions |
US7477906B2 (en) | 2004-02-27 | 2009-01-13 | Research In Motion Limited | Methods and apparatus for facilitating the determination of GPS location information for a mobile station without disrupting communications of a voice call |
US8085741B2 (en) | 2004-03-10 | 2011-12-27 | Core Wireless Licensing S.A.R.L. | System and method for pushing content to a terminal utilizing a network-initiated data service technique |
US20050215228A1 (en) | 2004-03-26 | 2005-09-29 | Comverse Ltd. | Voice session data session interoperability in the telephony environment |
US8265057B2 (en) | 2004-03-31 | 2012-09-11 | Motorola Mobility Llc | Enhanced voice pre-emption of active packet data service |
EP1596613A1 (en) | 2004-05-10 | 2005-11-16 | Dialog Semiconductor GmbH | Data and voice transmission within the same mobile phone call |
US20080182570A1 (en) | 2004-05-21 | 2008-07-31 | Carmen Kuhl | Device and Method For Automated Functionality-Based Selective Establishing of Wireless Data Communication Connections |
US7856240B2 (en) | 2004-06-07 | 2010-12-21 | Clarity Technologies, Inc. | Distributed sound enhancement |
US20050090225A1 (en) | 2004-11-16 | 2005-04-28 | Om2 Technology Inc. | A Simplified Second Generation Enhanced Emergency Communications System SSGE-911 |
US7508810B2 (en) | 2005-01-31 | 2009-03-24 | Airbiquity Inc. | Voice channel control of wireless packet data communications |
US7970607B2 (en) | 2005-02-11 | 2011-06-28 | Clyde Holmes | Method and system for low bit rate voice encoding and decoding applicable for any reduced bandwidth requirements including wireless |
US20060287003A1 (en) | 2005-06-15 | 2006-12-21 | Kamyar Moinzadeh | Concomitant inband signaling for data communications over digital wireless telecommunications network |
US8874477B2 (en) | 2005-10-04 | 2014-10-28 | Steven Mark Hoffberg | Multifactorial optimization system and method |
US8194779B2 (en) | 2005-10-24 | 2012-06-05 | General Motors Llc | Method for data communication via a voice channel of a wireless communication network |
US8381047B2 (en) | 2005-11-30 | 2013-02-19 | Microsoft Corporation | Predicting degradation of a communication channel below a threshold based on data transmission errors |
US20070155360A1 (en) | 2005-12-30 | 2007-07-05 | Yafan An | Methods, Apparatuses and Systems for the Reporting of Roadway Speed and Incident Data and the Constructing of Speed Map Database |
DE102006010513B4 (de) | 2006-03-07 | 2011-12-29 | Infineon Technologies Ag | Kommunikationseinrichtung, Funk-Kommunikations-Anordnung und Verfahren zum Übertragen von Information von einer ersten Funk-Kommunikationseinrichtung zu einer zweiten Funk-Kommunikationseinrichtung |
US7924934B2 (en) | 2006-04-07 | 2011-04-12 | Airbiquity, Inc. | Time diversity voice channel data communications |
US7511611B2 (en) | 2006-05-18 | 2009-03-31 | Casella Waste Systems, Inc. | Systems for and methods of asset management in a waste management service environment |
KR100735413B1 (ko) | 2006-08-08 | 2007-07-04 | 삼성전자주식회사 | 블루투스를 이용하여 음악 데이터 재생 중 음성을입출력하는 이동통신 단말기 및 음성 입출력 방법 |
JP5089136B2 (ja) | 2006-11-02 | 2012-12-05 | 株式会社デンソー | 車載緊急通報装置 |
US20080143497A1 (en) | 2006-12-15 | 2008-06-19 | General Motors Corporation | Vehicle Emergency Communication Mode Method and Apparatus |
JP5113394B2 (ja) | 2007-01-23 | 2013-01-09 | 太陽誘電株式会社 | 弾性波デバイス |
KR100787982B1 (ko) | 2007-03-02 | 2007-12-24 | 삼성전자주식회사 | 오디오신호의 에프엠 전송 장치 및 방법 |
DE102007023702A1 (de) | 2007-05-22 | 2008-11-27 | Infineon Technologies Ag | Verfahren zum Erzeugen einer Generic Object Exchange Profile-Nachricht, Verfahren zum Bereitstellen von Navigations-Daten, Verfahren zum Aufbau einer Verbindung zum Übertragen von Navigations-Daten, Navigationsendgerät und Navigationsdaten-Einfüge-Einheit |
US8190716B2 (en) | 2007-08-24 | 2012-05-29 | Broadcom Corporation | Method and system for managing bluetooth communication using software or firmware filtering |
JP4395800B2 (ja) | 2007-09-18 | 2010-01-13 | 日本電気株式会社 | 電力管理システムおよび電力管理方法 |
US20090088180A1 (en) | 2007-10-01 | 2009-04-02 | James Lamance | Computing geographical location of a mobile receiver using network measurement reports |
KR101293069B1 (ko) | 2007-10-20 | 2013-08-06 | 에어비퀴티 인코포레이티드. | 차량내 시스템들에 의한 무선 인―밴드 시그널링 |
US7790576B2 (en) * | 2007-11-29 | 2010-09-07 | Stats Chippac, Ltd. | Semiconductor device and method of forming through hole vias in die extension region around periphery of die |
US9208797B2 (en) | 2008-04-18 | 2015-12-08 | General Motors Llc | Tone detection for signals sent through a vocoder |
KR20090124588A (ko) | 2008-05-30 | 2009-12-03 | 삼성전자주식회사 | 복수의 블루투스 프로파일 연결방법 및 이를 적용한블루투스 기기 |
US8825480B2 (en) * | 2008-06-05 | 2014-09-02 | Qualcomm Incorporated | Apparatus and method of obtaining non-speech data embedded in vocoder packet |
US9083521B2 (en) | 2008-06-05 | 2015-07-14 | Qualcomm Incorporated | System and method of an in-band modem for data communications over digital wireless communication networks |
US8958441B2 (en) | 2008-06-05 | 2015-02-17 | Qualcomm Incorporated | System and method of an in-band modem for data communications over digital wireless communication networks |
US7983310B2 (en) | 2008-09-15 | 2011-07-19 | Airbiquity Inc. | Methods for in-band signaling through enhanced variable-rate codecs |
US8594138B2 (en) | 2008-09-15 | 2013-11-26 | Airbiquity Inc. | Methods for in-band signaling through enhanced variable-rate codecs |
US8073440B2 (en) | 2009-04-27 | 2011-12-06 | Airbiquity, Inc. | Automatic gain control in a personal navigation device |
-
2010
- 2010-10-13 US US12/904,093 patent/US8249865B2/en not_active Expired - Fee Related
- 2010-10-18 JP JP2012539913A patent/JP5709887B2/ja not_active Expired - Fee Related
- 2010-10-18 EP EP10771613.6A patent/EP2504942B1/en not_active Not-in-force
- 2010-10-18 CA CA2778056A patent/CA2778056A1/en not_active Abandoned
- 2010-10-18 WO PCT/US2010/053006 patent/WO2011062715A1/en active Application Filing
- 2010-10-18 BR BR112012009888A patent/BR112012009888A2/pt not_active IP Right Cessation
- 2010-10-18 MX MX2012005702A patent/MX2012005702A/es not_active Application Discontinuation
- 2010-10-18 AU AU2010322322A patent/AU2010322322B2/en not_active Ceased
- 2010-10-18 CN CN201080052411.5A patent/CN102792625B/zh not_active Expired - Fee Related
- 2010-10-18 KR KR1020127016042A patent/KR20120101082A/ko not_active Application Discontinuation
- 2010-10-26 TW TW099136455A patent/TWI357741B/zh not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050207511A1 (en) * | 2004-03-17 | 2005-09-22 | General Motors Corporation. | Meethod and system for communicating data over a wireless communication system voice channel utilizing frame gaps |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108461087A (zh) * | 2018-02-07 | 2018-08-28 | 芯盾(海南)信息安全技术有限公司 | 数字信号穿过声码器的装置及方法 |
CN109256141A (zh) * | 2018-09-13 | 2019-01-22 | 芯盾(北京)信息技术有限公司 | 利用语音信道进行数据传输的方法 |
CN113557681A (zh) * | 2019-03-06 | 2021-10-26 | 高通股份有限公司 | 高路径损耗模式的支持 |
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EP2504942A1 (en) | 2012-10-03 |
TWI357741B (en) | 2012-02-01 |
MX2012005702A (es) | 2012-11-12 |
CA2778056A1 (en) | 2011-05-26 |
AU2010322322A2 (en) | 2012-08-23 |
TW201129013A (en) | 2011-08-16 |
US20110125488A1 (en) | 2011-05-26 |
EP2504942B1 (en) | 2014-11-26 |
KR20120101082A (ko) | 2012-09-12 |
AU2010322322B2 (en) | 2014-10-16 |
US8249865B2 (en) | 2012-08-21 |
WO2011062715A1 (en) | 2011-05-26 |
BR112012009888A2 (pt) | 2016-11-29 |
CN102792625B (zh) | 2015-06-17 |
JP5709887B2 (ja) | 2015-04-30 |
AU2010322322A1 (en) | 2012-05-03 |
JP2013511893A (ja) | 2013-04-04 |
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