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    • 52. 发明授权
    • Crystal controlled transmitter
    • 水晶控制发射机
    • US4864636A
    • 1989-09-05
    • US16561
    • 1987-02-19
    • Robert E. Brunius
    • Robert E. Brunius
    • H03B5/36H03B19/14H04B14/02
    • H04B14/026H03B19/14H03B5/362H03B2200/0012
    • A short distance, battery powered, amplitude modulated, crystal controlled RF transmitter for transmitting encoded security information. In its preferred embodiments, the transmitter comprises a novel fifth overtone crystal oscillator which self-produces a carrier frequency at the third harmonic of the fifth overtone of the crystal's fundamental frequency, which carrier frequency is coupled by a series resonant trap, or a pi network, tuned to the carrier frequency to an amplifier stage where the carrier is amplitude modulated via pulse position encoded binary security data. In an alternative embodiment, the transmitter comprises matched crystal oscillator, tripler and amplifier stages. Also disclosed is an antenna including a battery clip contact.
    • 短距离,电池供电的幅度调制的晶体控制RF发射器,用于传输编码的安全信息。 在其优选实施例中,发射机包括一个新颖的第五谐波晶体振荡器,其自身产生晶体基频的第五谐波的三次谐波处的载波频率,该载波频率通过串联谐振陷波器耦合,或者pi网络 调谐到载波频率到载波通过脉冲位置编码的二进制安全数据进行幅度调制的放大器级。 在替代实施例中,发射机包括匹配的晶体振荡器,三倍和放大器级。 还公开了一种包括电池夹触点的天线。
    • 53. 发明授权
    • System structure recognition method for a multiloop transmission system
    • 多循环传输系统的系统结构识别方法
    • US4829516A
    • 1989-05-09
    • US854836
    • 1986-04-23
    • Masayuki OrimoKinji MoriYasuo Suzuki
    • Masayuki OrimoKinji MoriYasuo Suzuki
    • G06F13/00H04B14/02H04L12/24H04L12/46
    • H04L41/00H04L12/24H04L12/4637
    • A system structure recognition method for a multiloop transmission system for recognizing the system structure of a transmission system consisting of a plurality of loop transmission lines, a plurality of devices connected with each of a plurality of transmission control devices disposed on each of the loop transmission lines, and relay terminals connecting the loop transmission lines with each other includes a step of sending the message to the loop transmission lines after having added an address to the data portion of the message, when a message for system recognition reaches each of the transmission control devices from the loop transmission lines and a step, in which, when the message for system recognition reaches one of the relay terminals from one of the loop transmission lines, the message is sent to the other loop transmission line after having inserted a flag representing a relay of the message between different loops in the data portion of the message for system recognition.
    • 一种用于识别由多个环路传输线组成的传输系统的系统结构的多环路传输系统的系统结构识别方法,与设置在每个环路传输线路上的多个传输控制设备中的每一个连接的多个设备 ,并且连接环路传输线路的中继终端彼此包括在向系统识别的消息到达每个传输控制设备之后,向已经添加了一个地址的消息的数据部分发送消息给环路传输线的步骤 从循环传输线路和步骤,其中当用于系统识别的消息从一个环路传输线路到达一个中继终端时,在插入代表中继器的标志之后,该消息被发送到另一环路传输线路 在消息的数据部分的不同循环之间的消息的系统识别的消息 。
    • 58. 发明授权
    • Telephone subscriber station
    • 电话用户台
    • US4317233A
    • 1982-02-23
    • US197561
    • 1980-10-16
    • Gerhard KundeSiegfried SchoenHerwig Trimmel
    • Gerhard KundeSiegfried SchoenHerwig Trimmel
    • H04B10/114H04B14/02H04M1/00H04M1/737H04Q7/20H04Q7/38H04B9/00
    • H04B10/1143H04B14/026H04M1/737
    • A telephone subscriber station has a base set and a cordless hand set. The transmission between the base and hand set occurs by way of infrared transmitters and infrared receivers. Pulse phase modulation who is particularly suited for the speech transmission. Various functions are remotely controlled from the cordless hand set by the transmission of special characters. The special characters are transmitted as pulse sequences having differing frequencies. Thereby, a specific frequency is assigned to each special character. A call device comprises keys and a controllable pulse generator. A frequency recognition circuit is provided in the receiver at the base set and assigns the received pulse sequences to the special characters and has corresponding control functions. A monitoring circuit monitors the synchronization between the hand set and the base set and disconnects the telephone connection given a transmission which is disrupted over a longer interval.
    • 电话用户台具有基座和无绳手套。 基座和手机之间的传输通过红外发射器和红外接收器进行。 脉冲相位调制谁特别适合于语音传输。 通过特殊字符的传输,通过无绳手控制各种功能。 特殊字符作为具有不同频率的脉冲序列发送。 由此,将特定频率分配给每个特殊字符。 呼叫装置包括键和可控脉冲发生器。 在基站的接收机中提供频率识别电路,并将接收到的脉冲序列分配给特殊字符并具有相应的控制功能。 监控电路监视手机和基座之间的同步,并断开电话连接,给定在较长间隔内被中断的传输。