JPS5936443A - State display system of radio device - Google Patents

Abstract

PURPOSE:To improve operating efficiency of a device, by starting a timer function when level information receiving communication channel information is coincident with information at a receiving state with a press switch and displaying it on a display device after the elapse of a prescribed time. CONSTITUTION:A radio wave from an antenna 1 enters a receiver 2 and the received electric field strength is discriminated at a receiving level discriminator 3, in a state display system of the radio device performing the end of call notice at a multi-channel access system terminal station of a 2-frequency semi- duplex system. An output of the receiving level discriminator 3, a press switch 4, and a channel information terminal 5 enters an AND circuit 6, and a signal having ''H'' is outputted to a counter 7 exclusively when said three outputs are all at ''H'', and an ''L'' is given in other states. The counter 7 measures the time when the said input is at ''H'' and resets the measuring time so far when at ''L''. When the measuring time reaches a predetermined time, the output of the counter 7 is displayed on a display 9 via a display signal generating section 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a status display method for a wireless device that performs end-of-call notification at a terminal station of a dual-frequency half-duplex multi-channel access system (MCA). .

Explanation of the conventional example and its problems Consisting of a plurality of base stations and a plurality of terminal stations classified into groups, a radio channel connecting the base station and the terminal station is composed of at least one control channel and a plurality of communication channels, The base station broadcasts various control signals on the control channel, and the terminal station accesses the control channel of the base station and receives a call channel assignment according to the group to which the terminal station belongs, and each terminal station in the group is assigned a communication channel. An MCA system is known in which communication is performed with terminal stations of the same group by relaying a base station in a two-frequency half-duplex system (as viewed from the base station) through a communication channel.

In this type of system, if a terminal station on a communication channel detects a loss of radio waves from the base station for two consecutive seconds, it considers the call to be over and returns from the communication channel to the control channel, but the call ends due to the interruption of radio waves. The operator of the terminal station who does not know this has the disadvantage of repeatedly making unnecessary calls.

Purpose of the Invention The present invention eliminates the above-mentioned drawbacks of the conventional technology, and enables a terminal station where a call is terminated due to radio wave interruption to notify the operator that the call has been terminated.
The purpose is to make subsequent operations more efficient.

Structure of the Invention The present invention provides three types of communication channel information, reception level information, and information in the reception state by a press switch in an MCA.
When the information matches, the timer function and master function are started, and after a predetermined period of time, the information is displayed on the display (including audio display).

DESCRIPTION OF EMBODIMENTS The present invention will be explained below by way of an embodiment thereof with reference to the drawings. In the figure, 1 is an antenna, 2 is a receiver, 3 is a reception level judger that determines the received electric field strength, 4 is a press switch that controls reception and transmission switching, 6 is a channel information terminal, and 6 is an AND (AND). 7 is a counter that measures time according to the output of the AND circuit 6, 8 is a display signal generator, and 9 is a display.

Next, the operation will be explained.

The radio wave received by the antenna 1 enters the receiver 2, where the received field strength is determined by the received level determiner 3, and if it is lower than a certain level, HII is output. On the other hand, from the press switch 4, when the terminal station is in the receiving state, II H
"," and in other states, a signal "PALP+" is output. In addition, the channel information terminal 5 becomes "HII" only when the channel in question is a communication channel. The outputs of the reception level judger 3, press switch 4, and channel information terminal 5 are input to an AND circuit 6, which outputs a signal to the counter H# only when the above three are "H" and 'L' in other states. The counter 7, which outputs an output to the above, measures the time when the input is °゛H'', and resets the previous measurement time when the input becomes ``L''.When the measurement time reaches a certain predetermined time, the output of this counter becomes a display signal. Generates a signal to drive the generator and displays the display 9
to emit notification letters or sounds.

As described in detail, according to the present invention, it is possible to clearly notify the operator of a terminal station where a call has been terminated due to radio wave interruption, and to efficiently carry out subsequent operations. There are advantages and disadvantages to operating a dog.

[Brief explanation of the drawing]

The drawing is a block diagram of a device to which a wireless device status display method according to an embodiment of the present invention is applied. 1...Antenna, 2...Receiver, 3.
...Reception level determiner, 4...Press switch, 5...Channel information terminal, 6...
AND circuit, 7... Counter, 8...
Display signal generator, 9...display device.

Claims (1)

[Claims] Consisting of a plurality of base stations and a plurality of terminal stations classified into groups, the radio channel connecting the base station and the terminal station consists of at least one control channel and a plurality of communication channels, and the base station performs various control functions on the control channel. The terminal station accesses the control channel of the base station and is assigned a communication channel according to the group to which the terminal station belongs, and each terminal station in the group receives a two-frequency half-duplex signal on the assigned communication channel. Communication is carried out with the same "Mochi terminal station" by relaying the base station using the trust method (as seen from the base station), and the radio wave of the communication channel is input to the receiver of the terminal station that is connected to the communication channel and is in communication. If the voltage continues to be below a certain set value for a certain period of time, the emission of radio waves in the communication channel is restricted, the control channel acquisition operation is returned to, and the call is terminated, while the terminal station A status display method for a wireless device in which when the reception level of a receiver is above a certain value, the receiver is in a receiving state, and the channel is in the receiving channel, a timer is started and a notification is displayed after a predetermined period of time has elapsed.