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    • 5. 发明授权
    • Synchronization techniques and systems for spread spectrum radiocommunication
    • 用于扩频无线电通信的同步技术和系统
    • US06278699B1
    • 2001-08-21
    • US09100951
    • 1998-06-22
    • Roozbeh Atarius
    • Roozbeh Atarius
    • H04B7212
    • H04L7/08H04J3/0602H04L7/027H04W56/0035
    • A method and apparatus for synchronizing to a time structure associated with base station transmissions in a radiocommunication system are described. A broadcast control channel can contain synchronization symbols within one or more of a plurality of timeslots. The symbols can be provided as periodic, e.g., exponential, signals which introduce a frequency deviation into the broadcast control channel. This frequency deviation can be recognized by the receiver to synchronize to the time structure of the base station transmissions. Moreover, the variation in the frequency deviation caused by phase rotation associated with local oscillator inaccuracy can also be compensated to achieve frequency synchronization.
    • 描述了用于在无线电通信系统中与基站传输相关联的时间结构同步的方法和装置。 广播控制信道可以在多个时隙中的一个或多个时隙内包含同步符号。 符号可以周期性地提供,例如指数的信号,其将频率偏差引入到广播控制信道中。 该频率偏差可由接收机识别为与基站传输的时间结构同步。 此外,也可以补偿由与本地振荡器不准确相关的相位旋转引起的频偏的变化,以实现频率同步。
    • 6. 发明授权
    • Method and apparatus for processing ECG signals
    • 用于处理ECG信号的方法和装置
    • US5479933A
    • 1996-01-02
    • US264719
    • 1994-06-23
    • Roozbeh AtariusThomas OhlssonLeif Soernmo
    • Roozbeh AtariusThomas OhlssonLeif Soernmo
    • A61B5/0472A61B5/0452G06F17/00
    • A61B5/04525
    • In a method and apparatus for processing ECG signals for the purpose of detecting low-amplitude signal structures hidden in noise in the ECG signal, the ECG signals, number of cardiac cycles are analog-to-digital converted, and QRS complexes in the converted signals are detected. The signals from at least two cardiac cycles are cross-correlated, and the correlation between these signals in time intervals which comprise at least the time intervals of the two samples is determined. An output quantity representing the degree of correlation is thus obtained, the magnitude of this quantity designating the amplitude of the signal structure in question. This magnitude can then be analyzed to determine if, and where in the signal, the signal structure arises.
    • 在用于检测ECG信号中噪声隐藏的低幅度信号结构的ECG信号处理的方法和装置中,ECG信号,心跳周期数被模数转换,并且QRS在转换信号中复合 被检测到。 来自至少两个心动周期的信号是交叉相关的,并且确定包括两个样本的至少时间间隔的时间间隔中的这些信号之间的相关性。 因此,获得表示相关程度的输出量,该量的大小指示所讨论的信号结构的振幅。 然后可以分析该幅度以确定是否在信号中以及何处出现信号结构。
    • 9. 发明授权
    • Method and apparatus for delivery confirmation of a message
    • 消息传送确认方法和装置
    • US08571524B2
    • 2013-10-29
    • US12366315
    • 2009-02-05
    • Roozbeh Atarius
    • Roozbeh Atarius
    • H04M1/725H04M11/00H04W4/00
    • H04L51/30H04L51/04H04L51/066H04L51/22H04L51/38
    • A system and method for delivery confirmation of a short message comprising sending the short message to an recipient communication device, determining that an instant message delivery notification (IMDN) is not received, and indicating delivery failure of the short message to the mobile station. In another aspect, if a 202 Accepted message is received, the IM server is subscribed to. Alternatively when a message indicating that an recipient communication device is reachable is received, the service center sends the short message to the communication device. In another alternative, if a recipient absence notification is received the short message is buffered in a service center until the service center receives notification that the recipient communication device is present. Upon receipt of the notification, the service center retransmits the short message, and a successful delivery report is sent when the short message is received by the recipient communication device.
    • 一种用于短消息的发送确认的系统和方法,包括将短消息发送到接收者通信设备,确定没有接收到即时消息传递通知(IMDN),并且指示该短消息到移动台的传送失败。 另一方面,如果接收到202接受的消息,则IM服务器被订阅。 或者,当接收到指示接收者通信设备可达的消息时,服务中心将该短消息发送到通信设备。 在另一替代方案中,如果收到接收者缺席通知,短消息被缓存在服务中心,直到服务中心接收到接收方通信设备存在的通知。 在接收到通知后,服务中心重传短消息,并且当接收者通信设备接收到短消息时,发送成功的传送报告。
    • 10. 发明授权
    • Method and apparatus for interworking between push-to-talk over cellular (PoC) systems and instant messaging (IM) systems
    • 一键通(PoC)系统和即时消息(IM)系统之间互通的方法和装置
    • US08315190B2
    • 2012-11-20
    • US11341937
    • 2006-01-26
    • Roozbeh AtariusRamachandran Subramanian
    • Roozbeh AtariusRamachandran Subramanian
    • H04L12/16
    • H04L65/4061H04L51/04H04L51/066H04L51/36H04L51/38H04L65/1016
    • A method and apparatus for interworking between push-to-talk over cellular (PoC) systems and instant messaging (IM) systems is provided. An interworking entity that behaves like a PoC client to a PoC server and as an IM client to the IM server is provided. The interworking entity may be implemented as part of the PoC server or the IM server. The interworking entity listens to talk bursts from the PoC server and when it receives a talk burst the interworking entity sends the message to the IM client via the IM server. In an embodiment, the interworking entity listens to talk bursts or audio clips from the IM server and when it receives them, stores them in a temporary storage memory and converts them to a streaming format. The interworking entity then requests the floor from the PoC server, and, once the floor is granted, streams the stored audio clip or talk burst to the PoC server. The PoC server then distributes the clips to the PoC clients.
    • 提供了一键通(PoC)系统和即时消息(IM)系统之间的互通方法和装置。 提供了一种与PoC服务器和作为IM服务器的IM客户端一样的PoC客户端的互通实体。 互通实体可以被实现为PoC服务器或IM服务器的一部分。 互通实体监听来自PoC服务器的通话突发,当接收到通话突发时,互通实体通过IM服务器向IM客户端发送消息。 在一个实施例中,互通实体监听来自IM服务器的通话突发或音频剪辑,并且当它接收到它们时,将它们存储在临时存储存储器中并将它们转换为流格式。 互通实体然后从PoC服务器请求楼层,并且一旦授权,则将存储的音频剪辑或通话突发流传输到PoC服务器。 PoC服务器然后将剪辑分发到PoC客户端。