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    • 1. 发明授权
    • Speech coding transmission system and coder and decoder therefor
    • 语音编码传输系统及其编码和解码器
    • US5621760A
    • 1997-04-15
    • US649067
    • 1996-05-16
    • Hiroki GotohSeishi SasakiMasayasu Miyake
    • Hiroki GotohSeishi SasakiMasayasu Miyake
    • H04B14/06H03M3/04
    • H04B14/068
    • A speech coding transmission system is disclosed in which a coder of a differential coding system quantizes a difference between a predictive value from an adaptive predictor and an input speech signal by an adaptive quantizer in accordance with the level of the latter and to send out the resulting coded signal to transmission medium, and a decoder outputs a reproduced speech signal on the basis of a residual signal obtained by inversely quantizing a received coded signal with an inverse adaptive quantizer and a predictive value from an adaptive predictor. Both or either one of the coder and the decoder includes a comparator-attenuator which attenuates the amplitude of the input signal or reproduced speech signal to a value smaller than a predetermined threshold value and applies to the amplitude-attenuated speech signal to the adaptive predictor.
    • 公开了一种语音编码传输系统,其中差分编码系统的编码器根据自适应量化器根据自适应量化器量化来自自适应预测器的预测值与输入语音信号之间的差异,并发送所得到的 并且解码器基于通过用自适应量化器逆量化接收的编码信号而获得的残差信号和来自自适应预测器的预测值来输出再现的语音信号。 编码器和解码器中的任一个或两者都包括比较器衰减器,其将输入信号的幅度或再现的语音信号衰减到小于预定阈值的值,并将该幅度衰减的语音信号应用于自适应预测器。
    • 3. 发明授权
    • Speech coding circuit
    • 语音编码电路
    • US5278944A
    • 1994-01-11
    • US914848
    • 1992-07-15
    • Seishi SasakiMasayasu MiyakeKenzo Urabe
    • Seishi SasakiMasayasu MiyakeKenzo Urabe
    • G10L11/02G10L11/04G10L19/00G10L19/02G10L5/00
    • G10L19/02G10L19/09G10L2025/783
    • A speech coding circuit is disclosed, which comprises a PCM encoder for converting an analog input into a digital output, and a speech coder with voice activity detector which encodes the digital output from the PCM encoder into speech coding data and detects whether the analog input is voice active or non-active, for each period, and then outputs a speech detection flag indicating whether the analog input is voice active or non-active. A power comparator compares the power of the analog input with a predetermined power threshold value and outputs a level detection flag indicating voice activity or non-activity, depending on whether the power of the analog input is greater or smaller than the power threshold value. A mode switch receives the level detection flag indicating voice activity or non-activity and applies to the PCM encoder and the speech coder a mode control signal which puts them into an activated mode or a sleep mode.
    • 公开了一种语音编码电路,其包括用于将模拟输入转换为数字输出的PCM编码器,以及具有语音活动检测器的语音编码器,其将来自PCM编码器的数字输出编码为语音编码数据,并检测模拟输入是否为 语音激活或非有效,然后输出表示模拟输入是语音有效还是非活动的语音检测标志。 电源比较器将模拟输入的功率与预定功率阈值进行比较,并且根据模拟输入的功率是大于还是小于功率阈值,输出指示语音活动或非活动的电平检测标志。 模式切换器接收指示语音活动或非活动的电平检测标志,并向PCM编码器和语音编码器施加将其置于激活模式或睡眠模式的模式控制信号。
    • 5. 发明授权
    • Multimode radio communication system
    • 多模无线电通信系统
    • US5903618A
    • 1999-05-11
    • US503576
    • 1995-07-18
    • Masayasu MiyakeLucian X. Dang
    • Masayasu MiyakeLucian X. Dang
    • H04W88/02H04L7/00
    • H04W88/02
    • Like a conventional one-way pager system, a two-way pager system is provided in which a message is received by paging from a base station and a message responding to the received message is returned to the base station. In this system, direct communication and peer-to-peer communication between terminals are performed. All the terminals included in the service area of the base station are always synchronized with sync signals paged from the base station. No special infrastructure is therefore required for synchronizing the terminals with the sync signals to perform the peer-to-peer communication. Furthermore, since each of the terminals receives a paging signal during the peer-to-peer communication, it can respond to a paging call.
    • 像传统的单向寻呼机系统一样,提供一种双向寻呼机系统,其中通过来自基站的寻呼接收消息,并且响应于所接收的消息的消息被返回到基站。 在该系统中,执行终端之间的直接通信和对等通信。 包括在基站的服务区域中的所有终端总是与从基站寻呼的同步信号同步。 因此,不需要特殊的基础设施来使终端与同步信号同步,以进行对等通信。 此外,由于每个终端在对等通信期间接收寻呼信号,所以它可以响应寻呼呼叫。
    • 6. 发明授权
    • Multimode radio communication system
    • 多模无线电通信系统
    • US06678341B1
    • 2004-01-13
    • US09204204
    • 1998-12-01
    • Masayasu MiyakeLucian X. Dang
    • Masayasu MiyakeLucian X. Dang
    • H04L700
    • H04W88/02
    • Like a conventional one-way pager system, a two-way pager system is provided in which a message is received by paging from a base station and a message responding to the received message is returned to the base station. In this system, direct communication and peer-to-peer communication between terminals are performed. All the terminals included in the service area of the base station are always synchronized with sync signals paged from the base station. No special infrastructure is therefore required for synchronizing the terminals with the sync signals to perform the peer-to-peer communication. Furthermore, since each of the terminals receives a paging signal during the peer-to-peer communication, it can respond to a paging call.
    • 像传统的单向寻呼机系统一样,提供一种双向寻呼机系统,其中通过来自基站的寻呼接收消息,并且响应于所接收的消息的消息被返回到基站。 在该系统中,执行终端之间的直接通信和对等通信。 包括在基站的服务区域中的所有终端总是与从基站寻呼的同步信号同步。 因此,不需要特殊的基础设施来使终端与同步信号同步,以进行对等通信。 此外,由于每个终端在对等通信期间接收寻呼信号,所以它可以响应寻呼呼叫。
    • 7. 发明授权
    • Complementary metal-insulator-semiconductor devices
    • 互补金属 - 绝缘体 - 半导体器件
    • US5585659A
    • 1996-12-17
    • US320690
    • 1994-10-11
    • Toshio KobayashiYukio OkazakiMasayasu MiyakeHiroshi InokawaTakashi Morimoto
    • Toshio KobayashiYukio OkazakiMasayasu MiyakeHiroshi InokawaTakashi Morimoto
    • H01L27/092H01L21/8238H01L29/02H01L29/78H01L29/76
    • H01L21/823842
    • A method for fabricating semiconductor devices wherein polysilicon gates for complementary-type field-effect semiconductor devices are formed of polysilicon to which impurity doped simultaneously to the polysilicon deposition; the both gates having the dual N.sup.+ /P.sup.+ polysilicon gate structure, so that the both N- and P-channel transistors are formed as the surface-channel type ones; and therefore, the off-characteristic, the short channel effect, and the controllability of threshold voltage are progressed. More specifically, N- and P-channel MISFETs are provided on a common semiconductor substrate (1); N-type polysilicon (9) doped with N-type impurity is adopted as the gate electrode for the N-channel MISFET; P-type polysilicon (8) doped with P-type impurity is adopted as the gate electrode for the P-channel MISFET; and a narrow region preventing the mutual diffusion of impurities is provided between portions of respective polysilicon.
    • 一种用于制造半导体器件的方法,其中用于互补型场效应半导体器件的多晶硅栅极由同时掺杂到多晶硅沉积的杂质的多晶硅形成; 两个门具有双N + / P +多晶硅栅极结构,使得N沟道晶体管和P沟道晶体管形成为表面沟道​​型晶体管; 因此,进行关闭特性,短通道效应和阈值电压的可控性。 更具体地,在公共半导体衬底(1)上提供N沟道和P沟道MISFET。 采用N型杂质掺杂的N型多晶硅(9)作为N沟道MISFET的栅电极; 采用掺杂有P型杂质的P型多晶硅(8)作为P沟道MISFET的栅电极; 并且在各个多晶硅的部分之间设置防止杂质相互扩散的窄区域。
    • 8. 发明授权
    • Spread spectrum communication system
    • 扩频通信系统
    • US5546424A
    • 1996-08-13
    • US266235
    • 1994-06-27
    • Masayasu Miyake
    • Masayasu Miyake
    • H04J13/00H04J13/10H04J13/16H04B1/707H04B1/69
    • H04J13/16H04J13/10
    • A spreading process is performed with a spreading code assigned to each user and a spreading code assigned according to an attribute, and the resultant signal is modulated on the transmitter side. On the receiver side, a transmitted signal, modulated in the above manner, is subjected to a despreading process with the attribute-oriented spreading code from a reception spreading code generator, the resultant signal is subjected to despreading process with the user-specific spreading code from the reception spreading code generator, and those signals which have undergone the despreading processes are demodulated by data demodulators to extract desired information together with a desired signal corresponding to a wide band service. It is therefore possible to simplify the management of the individual users and individual services and facilitate the system design.
    • 使用分配给每个用户的扩展码和根据属性分配的扩展码执行扩展处理,并且在发送器侧调制所得到的信号。 在接收机侧,以上述方式调制的发送信号,利用来自接收扩展码发生器的属性取向扩展码进行解扩处理,所得到的信号经受​​用户特定扩展码的解扩处理 来自接收扩展码发生器的信号和经过解扩处理的那些信号由数据解调器解调,以提取所需信息以及对应于宽带业务的期望信号。 因此,可以简化个人用户和个人服务的管理,方便系统设计。