公开(公告)号：US5548271A

公开(公告)日：1996-08-20

申请号：US265668

申请日：1994-06-24

申请人： Kinya Tsuchiyama ,  Masahiro Matai

发明人： Kinya Tsuchiyama ,  Masahiro Matai

IPC分类号： H04Q7/14 ,  G08B5/22 ,  H04Q1/30

CPC分类号： G08B5/225

摘要： In a data display radio pager, light emitting diodes (LEDs) for alerting the user of the pager to an incoming call are disposed in a backlight together with LEDs for backlighting a liquid crystal display (LCD) for message display. The alert LEDs effect an alert via the LCD and flash in a striking color different from the color of light to issue from the backlight LEDs. The radio pager is miniature despite that the LCD and alert LEDs are arranged on the front of the casing of the pager.

摘要翻译： 在数据显示无线寻呼机中，用于向寻呼机的用户通知来电的发光二极管（LED）与用于背光液晶显示器（LCD）的LED一起布置在背光中以用于消息显示。 警报LED通过LCD发出警报，并以与从背光LED发出的光的颜色不同的醒目颜色闪光。 无线寻呼机是微型的，尽管LCD和警报LED布置在寻呼机的外壳的前面。

公开(公告)号：US5349696A

公开(公告)日：1994-09-20

申请号：US800987

申请日：1991-12-02

申请人： Masahiro Matai

发明人： Masahiro Matai

IPC分类号： G08B5/22 ,  H04B7/00

CPC分类号： G08B5/227

摘要： A data display pager capable of automatically protecting a particular message over a limited period of time. The receiver stores a message signal in a message signal storage area included in a controller thereof. When the pager detects protection information made up of a protection time signal indicative of a protection period and a set of particular marks, it protects the message signal over the protection time. The message signal is protected in either of two modes which are discriminated from each other on the basis of the number of or type of marks. During the protection time, the stored message is displayed in a first mode wherein a message without the protection information appears or in a second mode wherein the entire message appears, depending on the above-mentioned protection mode. On the expiration of the protection time, the stored message signal has, in a first protection mode, the protection information thereof deleted or has, in a second protection mode, only the particular marks thereof deleted.

摘要翻译： 一种能够在有限时间内自动保护特定消息的数据显示寻呼机。 接收器将消息信号存储在包括在其控制器中的消息信号存储区域中。 当寻呼机检测到由指示保护周期的保护时间信号和一组特定标记组成的保护信息时，其在保护时间内保护消息信号。 消息信号以基于标记的数量或类型的方式彼此区分的两种模式中的任一种进行保护。 在保护时间期间，存储的消息以第一模式显示，其中根据上述保护模式，出现没有保护信息的消息或处于其中出现整个消息的第二模式。 在保护时间到期时，所存储的消息信号在第一保护模式中具有删除的保护信息或者在第二保护模式中仅具有其特定标记被删除。

公开(公告)号：US4956641A

公开(公告)日：1990-09-11

申请号：US179254

申请日：1988-04-08

申请人： Masahiro Matai ,  Takashi Oyagi ,  Yutaka Ichikawa ,  Shinjiro Umetsu

发明人： Masahiro Matai ,  Takashi Oyagi ,  Yutaka Ichikawa ,  Shinjiro Umetsu

IPC分类号： H04Q7/14 ,  G08B5/22

CPC分类号： G08B5/22 ,  G08B5/227 ,  G08B5/229

摘要： In a radio display pager, each character of a received multi-character message is checked for error. A first message arrival or a first receive message is stored in a temporary memory and thereafter rewritten into one of main memories when the next message or second message arrival is received. The temporary memory stores the most recent message arrival and the main memories store a plurality of like messages, according to their successive order of earlier arrivals. Each of the messages in both memories contain both error-free and error-containing characters. The characters stored in the temporary memory respectively correspond in position to the characters stored in each of the main memories. A comparison is made between each error-free character in the temporary memory and each of the positionally corresponding error-free characters in one of the main memories in order to detect a match and mismatch. If a mismatch is detected, all characters of each main memory are transferred to an adjacent main memory in order to vacate a storage area. Then, all characters in the temporary memory are transferred to the vacated area for display. If a match is detected, it is counted for all characters of the received message. If the count is smaller than a threshold value, all characters of each main memory are transferred to an adjacent main memory in order to vacate a storage area. All characters in the temporary memory are transferred to that vacated area for display. If the count of the matches is greater than the threshold value, all the error-free characters in the temporary memory are transferred to one of the main memories for display.

摘要翻译： 在无线电显示寻呼机中，检查接收的多字符消息的每个字符的错误。 第一消息到达或第一接收消息被存储在临时存储器中，然后当接收到下一消息或第二消息到达时，将其重写为主存储器之一。 临时存储器存储最近的消息到达，并且主存储器根据其先前到达的连续顺序存储多个相似的消息。 两个内存中的每个消息都包含无错误和含错误的字符。 存储在临时存储器中的字符分别对应于存储在每个主存储器中的字符的位置。 在临时存储器中的每个无错误字符和主存储器之一中的每个位置相应的无错误字符之间进行比较，以便检测匹配和不匹配。 如果检测到不匹配，则每个主存储器的所有字符都被传送到相邻的主存储器以腾出存储区域。 然后，临时存储器中的所有字符都被传送到空闲区域进行显示。 如果检测到匹配，则对所接收消息的所有字符进行计数。 如果计数小于阈值，则每个主存储器的所有字符都被传送到相邻的主存储器以腾出存储区域。 临时存储器中的所有字符都将传输到该空闲区域进行显示。 如果匹配的计数大于阈值，则将临时存储器中的所有无错误字符传送到主存储器之一进行显示。

公开(公告)号：US5564099A

公开(公告)日：1996-10-08

申请号：US257693

申请日：1994-06-06

申请人： Kunitoshi Yonekura ,  Masahiro Matai

发明人： Kunitoshi Yonekura ,  Masahiro Matai

IPC分类号： H03L7/18 ,  H03D7/16 ,  H03J5/02 ,  H03L7/099 ,  H03L7/193 ,  H04B1/10 ,  H04B1/26

CPC分类号： H03D7/161 ,  H03J5/0272 ,  H03L7/193 ,  H04B1/10 ,  H03L7/099 ,  H04B1/1027 ,  H04B1/26

摘要： In a radio receiver a PLL oscillator generates a phase locked oscillation signal with a controllable frequency and a frequency multiplier multiplies the controllable frequency with a controllable factor into a local oscillation frequency to provide a local oscillation signal for mixing into an IF signal with a radio signal reaching the receiver, the IF signal is monitored to raise the controllable frequency and to reduce the controllable factor when a spurious signal coexists with the radio signal. This coexistence is detected by monitoring a level difference between the IF signal and an output signal of an IF filter. Preferably, the oscillator comprises in a PLL two VCO's for generating phase locked oscillation signals of higher and lower oscillation frequencies, such as 260 and 65 MHz, and a controllable prescaler supplied with high and low voltage signals when the VCO's are put in operation at the higher and the lower oscillation frequencies. Concurrently, the controllable factor is controlled to factors of unity and four.

摘要翻译： 在无线电接收机中，PLL振荡器产生具有可控频率的锁相振荡信号，频率乘法器将可控频率与可控因子相乘，以本地振荡频率乘以本地振荡信号，以便用无线电信号混合成IF信号 到达接收机时，监视IF信号以提高可控频率，并且当寄生信号与无线电信号共存时减小可控因素。 通过监视IF信号和IF滤波器的输出信号之间的电平差来检测该共存。 优选地，振荡器在PLL中包括两个VCO，用于产生诸如260和65MHz的较高和较低振荡频率的锁相振荡信号，以及一个可控预分频器，当VCO在其中运行时被提供高电压和低电压信号 较高和较低的振荡频率。 同时，可控因素被控制为统一因素和四。

公开(公告)号：US5420576A

公开(公告)日：1995-05-30

申请号：US95985

申请日：1993-07-23

申请人： Masahiro Matai ,  Hisami Nagai

发明人： Masahiro Matai ,  Hisami Nagai

IPC分类号： H04B1/10 ,  H04B7/26 ,  H04W52/02 ,  H04W88/02 ,  H02J7/00

CPC分类号： H04W88/022 ,  H04W52/0296 ,  Y10S320/10

摘要： A personal radio paging receiver includes a radio section, a control section, a DC/DC converter, and a secondary battery. The radio section receives/demodulates an external radio signal and outputs a POCSAG signal. The control section divides the POCSAG signal into a first sync signal portion and a second batch signal portion, and outputs a control signal during a period of the first portion. The DC/DC converter operates for only a period during which the control signal is received. The secondary battery supplies power to the control section in synchronism with the second portion. The DC/DC converter is supplied to charge the second battery.

摘要翻译： 个人无线寻呼接收机包括无线电部分，控制部分，DC / DC转换器和二次电池。 无线电部分接收/解调外部无线电信号并输出​​POCSAG信号。 控制部分将POCSAG信号分成第一同步信号部分和第二批信号部分，并且在第一部分的周期期间输出控制信号。 DC / DC转换器仅在接收控制信号的期间工作。 二次电池与第二部分同步地向控制部供电。 提供DC / DC转换器为第二个电池充电。

公开(公告)号：US4873519A

公开(公告)日：1989-10-10

申请号：US173766

申请日：1988-03-28

申请人： Masahiro Matai ,  Takashi Ohyagi ,  Toshihiro Mori

发明人： Masahiro Matai ,  Takashi Ohyagi ,  Toshihiro Mori

IPC分类号： G08B3/10 ,  G08B5/22 ,  H04B1/16 ,  H04B7/26 ,  H04W88/02

CPC分类号： H04W88/023 ,  G08B3/1016 ,  G08B3/105 ,  G08B3/1091 ,  G08B5/227

摘要： In a paging receiver with an individual paging number and at least one common paging number, there is provided memory means including individual memory means including individual memory areas capable of storing at least one message signal following the individual number and specific memory areas storing message signals following the common paging number. The receiver can protect individual address information and can efficiently utilize the memory areas even when the user does not use all common addresses.

摘要翻译： 在具有单独寻呼号码和至少一个公共寻呼号码的寻呼机中，提供了存储装置，其包括各自的存储装置，该存储装置包括独立的存储区域，该存储器装置能够存储紧跟在个别号码之后的至少一个消息信号，并且存储消息信号 共同寻呼号码。 接收机可以保护单个地址信息，并且即使当用户不使用所有公共地址时也可以有效地利用存储区域。

公开(公告)号：US5752174A

公开(公告)日：1998-05-12

申请号：US282238

申请日：1994-07-29

申请人： Masahiro Matai ,  Kunitoshi Yonekura

发明人： Masahiro Matai ,  Kunitoshi Yonekura

IPC分类号： H04B1/10 ,  H03D7/16 ,  H03J1/00 ,  H03J5/02 ,  H03J7/06 ,  H04B1/26 ,  H04Q7/14 ,  H04Q7/38 ,  H04B1/16

CPC分类号： H03J1/0008 ,  H03D7/161 ,  H03J5/0281 ,  H03J7/065

摘要： A radio selective calling receiver having at least two, i.e., a first and a second, local oscillators constituted by respective synthesizers. The oscillation frequencies of the local oscillator are controlled by the apparatus including a frequency calculator for executing frequency calculations according to the received call signal frequency and the oscillation frequencies of the first and second local oscillators so that harmonics of either one of the oscillation frequencies are not interference frequencies to the other oscillation frequency or the received signal frequency.

摘要翻译： 具有由各个合成器构成的至少两个，即第一和第二本地振荡器的无线电选呼接收机。 本地振荡器的振荡频率由包括频率计算器的装置控制，该频率计算器根据接收的呼叫信号频率和第一和第二本地振荡器的振荡频率执行频率计算，使得振荡频率中的任何一个的谐波不是 干扰频率到其他振荡频率或接收信号频率。

公开(公告)号：US5087905A

公开(公告)日：1992-02-11

申请号：US540427

申请日：1990-06-19

申请人： Hiroyasu Kuramatsu ,  Toshifumi Sato ,  Masahiro Matai ,  Sadayuki Anma

发明人： Hiroyasu Kuramatsu ,  Toshifumi Sato ,  Masahiro Matai ,  Sadayuki Anma

IPC分类号： G08B5/22

CPC分类号： G08B5/229 ,  G08B5/22

摘要： Data contained in second and subsequent transmissions is superimposed on the basic data first transmitted to a pocket bell type portable pager having a liquid crystal display. A first mode superimposes all of the data in order of receipt while a second mode stores the first received data and superimposes only most recently received thereon. A ROM is provided which contains maps and the like type of predetermined image data. Locations, times and messages can be superimposed in either of the two modes on the maps etc.

公开(公告)号：US5079559A

公开(公告)日：1992-01-07

申请号：US425741

申请日：1989-10-23

申请人： Shinjiro Umetsu ,  Masahiro Matai ,  Seiji Nishikawa

发明人： Shinjiro Umetsu ,  Masahiro Matai ,  Seiji Nishikawa

IPC分类号： H04B1/38 ,  H01Q1/24 ,  H05K1/00 ,  H05K1/11

CPC分类号： H01Q1/243 ,  H05K1/0393 ,  H05K1/11

摘要： Portable radio equipment which is thin enough to enhance portability and, yet, has a sufficiently high antenna gain. The equipment has an antenna which is made up of a pair of metal plates located face-to-face, and a short-circuiting member for short-circuiting the metal plates. A circuit board loaded with radio circuitry is interposed between two metal plates with the radio circuitry being connected to the antenna. A capacitor is connected between the metal plates to lower the resonance frequency of the antenna, as needed. A circular cell for powering the equipment is located in a cell receiving portion near the short-circuiting member.

摘要翻译： 便携式无线电设备足够薄以增强便携性，并且具有足够高的天线增益。 该设备具有由面对面的一对金属板构成的天线和用于短路金属板的短路构件。 装有无线电电路的电路板插在两个金属板之间，无线电电路连接到天线。 根据需要，在金属板之间连接电容器以降低天线的谐振频率。 用于为设备供电的圆形单元位于短路构件附近的单元容纳部中。

公开(公告)号：US6064863A

公开(公告)日：2000-05-16

申请号：US972076

申请日：1997-11-17

申请人： Masahiro Matai

发明人： Masahiro Matai

IPC分类号： H01Q3/44 ,  H01Q1/24 ,  H01Q1/52 ,  H04B1/38

CPC分类号： H01Q1/243 ,  H01Q1/244 ,  H01Q1/245 ,  H01Q1/521

摘要： A radio portable remote terminal device which has two antennas, and in which an antenna not in use contributes to the performance of the antenna presently in use. An external antenna has an external antenna element which is capable of being extended from an enclosure or being retracted and contained in the enclosure reciprocally. An internal antenna has a ground section, a detector for detecting whether the external antenna element is extended from the enclosure or is retracted in the enclosure. A switching circuit switches a connection between a radio section circuit and the external antenna or the internal antenna reciprocally. A printed circuit board mounts the external antenna with the external antenna element contained in the enclosure and the internal antenna measures on opposite sides thereof. When the external antenna element is retracted into the enclosure, a radio section circuit on the printed circuit board is disconnected from the external antenna and connected to the internal antenna. When the external antenna element is extended from the enclosure, the radio section circuit on the printed circuit board is disconnected from the internal antenna and connected to the external antenna.

摘要翻译： 具有两个天线的无线电便携式远程终端设备，其中不使用的天线有助于当前使用的天线的性能。 外部天线具有外部天线元件，该外部天线元件能够从外壳延伸或被倒置并容纳在外壳中。 内部天线具有接地部分，用于检测外部天线元件是从外壳延伸还是缩回到外壳中的检测器。 开关电路切换无线电部分电路与外部天线或内部天线之间的连接。 印刷电路板将外部天线安装在外壳中包含的外部天线元件，并且内部天线在其相对侧测量。 当外部天线元件缩回到外壳中时，印刷电路板上的无线电部分电路与外部天线断开并连接到内部天线。 当外部天线元件从外壳延伸时，印刷电路板上的无线电部分电路与内部天线断开并连接到外部天线。