JPH0264248U

JPH0264248U -

Info

Publication number: JPH0264248U
Application number: JP14475288U
Authority: JP
Priority date: 1988-11-05
Filing date: 1988-11-05
Publication date: 1990-05-15

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係るページング用
送信装置の構成ブロツク図、第２図は起動／停止
信号が正常な場合のタイムチヤート、第３図は起
動／停止信号が呼出信号の送出を終了したにも拘
らず起動状態となつた異常時のタイムチヤート、
第４図は従来のページング用送信装置の構成ブロ
ツク図、第５図は従来装置の動作タイムチヤート
を示し、同図ａは起動／停止信号が正常な場合の
タイムチヤート、同図ｂは呼出信号の送出を終了
したにも拘らず起動状態となつた異常時のタイム
チヤートである。１……送信機制御装置、２……送信機、３……
制御部、４……送信部、９，１０……単安定マル
チバイブレータ、１２……論理和回路、１３……
インバータ回路、１４……フリツプフロツプ回路
、１５……論理積回路、２７……空中線。 Figure 1 is a configuration block diagram of a paging transmitter according to an embodiment of the present invention, Figure 2 is a time chart when the start/stop signal is normal, and Figure 3 is when the start/stop signal is used to send out a calling signal. Time chart in case of abnormality when the program is started even though it has finished,
FIG. 4 is a block diagram of the configuration of a conventional paging transmitter, and FIG. 5 is an operation time chart of the conventional device. FIG. 4a shows a time chart when the start/stop signal is normal, and FIG. This is a time chart at the time of an abnormality in which the device was activated even though the transmission of the device had finished. 1... Transmitter control device, 2... Transmitter, 3...
Control unit, 4... Transmission unit, 9, 10... Monostable multivibrator, 12... OR circuit, 13...
Inverter circuit, 14... flip-flop circuit, 15... AND circuit, 27... antenna.

Claims

[Scope of utility model registration request]

A calling signal consisting of a binary pulse signal train of a predetermined code length, and a binary level signal indicating whether or not this calling signal is sent and its duration, one level being a start signal and the other level being a stop signal. / a transmitter control device that outputs a stop signal; which is intermittently controlled to start and stop, and performs modulation and amplification processing on the call signal input during the start period to generate a radio call signal; a transmitting section that forms and outputs a signal, and a control section that starts the transmitting section when the input signal level is a level corresponding to the one level and stops the transmitting section when the input signal level is a level corresponding to the other level. A paging transmitting device comprising: a transmitter having a retriggerable first monostable multiplier that outputs a pulse of a predetermined width in response to a rising edge of each pulse signal of the paging signal; a retriggerable second vibrator that outputs a pulse of a predetermined width in response to the falling edge of each pulse signal of the calling signal;
a monostable multivibrator; an OR circuit that performs an OR operation on each output signal of the first and second multivibrator; and an output in response to a change in the start/stop signal from a stop signal to a start signal. a flip-flop circuit whose level corresponds to the one level and whose output level is inverted in response to a change in the output state of the OR circuit; a signal corresponding to the start/stop signal and an output signal of the flip-flop circuit; and an AND circuit that performs an AND operation to form and output the input signal to the control section.