JPH02202752A - Radiotelephony system - Google Patents

Abstract

PURPOSE:To control a second telephone system or an electronic equipment in the vicinity of this equipment with a first telephone system by providing the second telephone system with a reception circuit which receives a control signal generated from a control signal generator provided on the first telephone system. CONSTITUTION:The telephone system 1 in a broadcast station is constituted of plural telephone sets 5 connected to a private branch exchange 6 and a control signal generator 7 inserted as the interface device. The system 1 is connected to a telephone exchange 2 through a telephone circuit and connected to a radiotelephony transmission/reception station 3. The control signal transmitted from the generator 7 of the system 1 is received by a terminal 4 through the exchange 2 and the station 3. For example, when a parabolic antenna or the like is used for transmission to the reception antenna of the broadcast station, the control signal to control the direction of the transmission antenna is transmitted from the system 1, and this control signal received by the terminal 4 is supplied to a motor control circuit which varies the direction of the transmission antenna, and it may be automatically controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless telephone system having a first telephone device and a second wireless telephone device that makes a call with the first telephone device.

In a wireless telephone system, the first telephone device is provided with a control signal generating device, and the second telephone device is provided with a receiving circuit that receives the control signal generated from the control signal generating device. The second telephone device or other electronic equipment in the vicinity thereof can be easily controlled by the device.

[Conventional technology]

For example, when covering a scene using a video camera, transmitting the video signal wirelessly to a broadcasting station, and broadcasting the video immediately, communication between the broadcasting station and the scene is required. In such cases, it is much more convenient to communicate using a portable wireless telephone than by using a wired telephone because it allows immediate communication regardless of location.

[Summary of the invention]
[Problems to be Solved by the Invention] The present invention provides a first telephone device and a second wireless telephone device that uses a video camera to conduct on-site reporting and communicate with the device. Yes, when the video signal is wirelessly transmitted to the broadcasting station and the video is immediately broadcast, when making telephone contact with the broadcasting station using a portable wireless telephone, on-site coverage. It is necessary to know whether the video from the video camera inside is being broadcast.

There is no problem with the video camera in the studio because the tally lamp of the video camera lights up when the video from the video camera is being broadcast, but it is not a problem if you use the video camera to cover the scene and broadcast the video signal. When transmitting wirelessly to a station, install a tally lamp on the video camera,
It is impossible to turn on the tally lamp while the video is being broadcast.

In addition, when conducting on-site reporting using a video camera and transmitting the video signal to the broadcasting station's receiving antenna using a highly directional transmitting antenna such as a parabolic antenna, it is necessary to adjust the direction of the transmitting antenna. is important.

In this case, the broadcast station must monitor and receive the radio waves wirelessly transmitted from the video camera at the site, and instruct the person at the site to adjust the direction of the transmitting antenna so that the reception output is maximized. However, it is difficult to accurately adjust the orientation of the transmitting antenna simply by telephone contact with the broadcasting station using a portable radio telephone, and furthermore, it takes time to make the adjustment.

In view of the above, the present invention provides a wireless telephone system having a first telephone device and a second wireless telephone device that makes a call with the first telephone device. The present invention attempts to propose a device that can easily control a telephone device or other electronic equipment in the vicinity thereof.

[Means to solve the problem]

The present invention provides a wireless telephone system having a first telephone device (1) and a second wireless telephone device (4) that makes a call with the first telephone device (1). (1
) is provided with a control signal generating device (7), and the second telephone device (4) is provided with a receiving circuit (19) for receiving the control signal generated from the control signal generating device (7).

[Effect]

According to the present invention described above, a control signal is transmitted from the first telephone device (1) and received by the second wireless telephone device (4).

〔Example〕

The present invention will be described in detail below with reference to the drawings. First, a wireless telephone system will be explained with reference to FIG.

(1) indicates a telephone device located at, for example, a broadcasting station, which includes, for example, a 4-wire private branch exchange (6), a plurality of telephones (5) connected to the private branch exchange (6), and It consists of a control signal generator (7) inserted as an interface device between the exchange (6) and the telephone line.

Note that it is also possible to provide a plurality of control signal generators (7). Further, this telephone device (1) can also be configured by one telephone (5) and a control signal generator (7).

This telephone device (1) is connected to a telephone exchange (2) through a telephone line, and the telephone exchange (2) is connected to a radiotelephone transceiver station (3). (3A) is a transmitting/receiving antenna of this wireless transmitting/receiving station (3).

(4) is a plurality of wireless telephone terminal devices (for example, a portable wireless telephone called a shoulder phone), and (4A) is a transmitting/receiving antenna thereof. Then, the wireless telephone transmitting/receiving station (3
) and these wireless telephone terminal devices (4).

This wireless telephone system may be a proprietary wireless telephone system, a car phone system operated by a first-class telecommunications carrier, or a wireless telephone system using a dedicated line borrowed from a first-class telecommunications carrier. be.

For example, when using the car telephone system of Nippon Telegraph and Telephone Corporation, a Class 1 telecommunications carrier, the telephone device (1) as a general subscriber telephone is connected to a terminal station, and this terminal station The network is sequentially connected to a central station, a central station, and a central station (each of the above stations constitutes a fixed network), and the central station is connected to a large number of radio line control stations through mobile telephone exchanges, each of which constitutes a mobile network. , each of the radio line control stations is connected to a large number of radio base stations, and radio communication is performed between each of the radio base stations and the radio telephone terminal device (4). In that case, the wireless telephone terminal device (4) consists of a wireless device borrowed from Nippon Telegraph and Telephone Corporation and a commercially available terminal telephone connected to this wireless device.

Next, a specific example of the circuit configuration of the radio telephone terminal device (4) in the radio telephone system of FIG. 3 will be described with reference to FIG. 1. In this example, a wireless transceiver (radio device) (
11) and the telephone terminal device (terminal telephone) connected to this
This is a case where an adapter (12) is added to a conventional portable radio telephone consisting of (13) to form a radio telephone terminal device (4). It is also possible to incorporate the circuit of this adapter (12) into a telephone terminal (13). Further, FIGS. 4, 5, and 6 show the top, bottom, and side views of the radio telephone terminal (4), respectively.

The wireless transmitter/receiver (11) and the telephone terminal (13) are connected to a transmission line LI through which DC current and up and down serial signals are transmitted, a transmission line L2 through which received signals are transmitted, and a transmission line through which transmitted signals are transmitted. They are connected to each other through a cord consisting of L3.

Next, the configuration of the adapter (Part 2) will be explained. Transmission line L
A DC voltage of +13.8V and Ov is obtained from I, which is supplied to the regulator (14) to obtain a DC voltage of +5V. Also, this transmission line.

The upstream and downstream serial signals from the buffer amplifier (
It is supplied to the control microcomputer (17) through 15) and (16). (22) is a watchdog connected to this microcomputer (17), (
23) is its reset switch.

The microcomputer (17) includes a PB (button button) signal generation circuit (18) as an answerback signal for the tally signal transmitted from the control signal generator (7) of the telephone device (1), and a telephone device (1). PB double signal receiving circuit (19) as a clear signal transmitted from the control signal generator (7) of 1), switch control circuit (20), tally lamp (21), liquid crystal display (24), and backup A clock circuit (a high-precision clock circuit using a crystal oscillator) that represents real time driven by a power source (41) (40
) are connected. (3B) is a microphone jack, (
39) is a receiver jack into which the respective plugs are inserted when a microphone and a receiver are used instead of the handset of the telephone terminal (13).

(25) and (26) are on/off switches, respectively, which are operated by operating the operation buttons (switches not shown in the figure) shown in FIG.
A switching signal is supplied to the wireless transmitter/receiver (11) under the control of the microcomputer (17) and the switch control circuit (20) based on the operation of (42).
) to the handset and receiver jack (39).

When the switch (25) is on and the switch (26) is off, the received signal from the wireless transceiver (Ll) passes through the switch (25) and the amplifier (27) to the telephone terminal (
13), the switch (25) is turned off,
When the switch (26) is on, the wireless transceiver (1
The received signal from 1) is supplied to a receiver jack (39) through a switch (26), a variable attenuator (28), and an amplifier (29). Note that the PB multiplied signal from the wireless transceiver (11) is supplied to the PB signal receiving circuit (20) regardless of the switches (25) and (26).

(31) and (32) are on/off switches, which are the operation buttons (not shown) shown in Fig. 4, and based on the switching of the switches, a switching signal is supplied to the microcomputer (17). Based on the operation of 42),
Microcomputer (17) and switch control circuit (
Under the control of 20), in conjunction with switches (25) and (26), the transmission signal from the handset of the telephone terminal (13) and the transmission signal from the microphone jack (38) are switched. (33) is an on/off switch, which is operated by operating the operation button (not shown) shown in Fig. 4, and based on the switching of the switch, the microcomputer (
A switching signal is supplied to the switches (25), (17) under the control of the microcomputer (17) and the switch control circuit (20) based on the operation of (42).
26), (31), and (32).
When this is on, the P from the PB signal generation circuit (Step 8)
Transmit B times signal. Then, the switch (31) is turned on,
When the switches (32) and (33) are off, the transmitted signal from the handset passes through the variable attenuator (34), switch (31) and amplifier (30) to the wireless transceiver (1).
1), switch (31) is off, switch (
32), (33) are on, the microphone jack (3) is turned on.
The transmission signal from 8) is transmitted through an amplifier (37) and a variable attenuator (
35), a switch (31) and an amplifier (30) to the wireless transmitter/receiver (11), and a PB double signal from the PB signal generation circuit (18), a variable attenuator (36).
), a switch (33), and an amplifier (30) to the wireless transceiver (11).

In addition, by operating the operation button (42), as shown in FIG.
, handset rH3J and jack "JACKJ" are displayed.

Next, the tally signal will be explained. Although FIG. 2 will be described later, the PB double signal as a tally signal from the control signal generator (7) of the telephone device (1), the wireless transceiver (
11), it is supplied to the PB signal receiving circuit (19) and received, and the received signal is supplied to the microcomputer (17). In this way, the microcomputer (17) outputs the PB signal generation circuit (1
8) to generate a PB double signal as an answerback signal of the tally signal, and this PB double signal is transmitted from the wireless transmitter/receiver (11) to the telephone device (1) as shown in FIG. Like, rON AIRJ on the display (24)
is displayed.

In addition, when a tally signal indicating that the video from the video camera mentioned above will be broadcast next arrives, the display (24)
is displayed as rNEXTJ. Note that when these cree signals are received, the tally lamp (2) shown in Figures 1 and 4 is activated.
1) is also lit.

Also, as shown in FIG. 7, the display (24) displays the year, month, Sunday, and time (hours, minutes, and seconds) based on the clock circuit (40).
The display is switched by operating the operation button (44) shown in FIG. Further, the select operation button (45) and cent operation button (46) are used when adjusting the clock.

Also, by operating the mute operation button (43) shown in Fig. 4, it is possible to mute the telephone, but when this operation is performed, the mute rM
J is displayed.

Next, with reference to FIG. 2, the configuration of the control signal generator (7) of the telephone device (1) shown in FIG. 3 will be described.

(41) and (42) are a transmitting terminal and a receiving terminal, respectively, which are connected to the four-wire private branch exchange (6). The transmission signal from the transmission terminal (41) is transmitted to the low frequency transformer (43).
), the signal is supplied to the amplifier (47) and amplified, and then supplied to the 2-wire to 4-wire conversion circuit (48). The input and output terminals of this conversion circuit (43) are connected to a transmission/reception terminal (51) through an on/off switch (49).

This switch (49) is controlled by a relay (50).

In addition, the transmission signal from the transmission terminal (41) is transmitted through the transformer (4
3) to the relay PB signal receiving circuit (45), thereby transmitting the telephone (5) of the telephone device (1).
When the relay PB signal based on the operation of the operation button is received, the relay (50) is controlled by the control circuit (56).
is energized and the switch (49) is turned on.

On-air switch (5) connected to the control circuit (56)
7) and the tally PB signal generated from the tally PB signal generation circuit (46) under the control of the control circuit (56) based on the operation of the next on-air switch (58).
After being supplied to an amplifier (47) and amplified, it is supplied to a 2-wire to 4-wire conversion circuit (43).

The received signal from the 2-wire to 4-wire conversion circuit (43) is supplied to the amplifier (55) and amplified, and then passed through the low frequency transformer (
44) and is supplied to the receiving terminal (42).

The received signal from the 2-wire to 4-wire conversion circuit (43) is supplied to the tally PB signal receiving circuit (52), and the tally PB signal answerback signal from the above-mentioned wireless telephone terminal transmission/reception (4) is received. The received signal is sent to the control circuit (5
6).

Further, when the 16Hz calling signal from the transmitting/receiving terminal (51) is received by the calling signal receiving circuit (53), the received signal is supplied to the tremolo signal generating circuit (54), and the generated tremolo signal is supplied to the tremolo signal generating circuit (54). Sound signal is an amplifier (55)
After being amplified, the signal is supplied to the transmission terminal (42) through the transformer (44).

In the above embodiment, the control signal generator (7) of the telephone device (1) is connected to the display device (4) of the wireless telephone terminal (4).
24) and the tally lamp (21), we have described the case of transmitting a control signal that causes a tally display to be displayed. However, when we survey the scene using a video camera, we transmit the video signal to a highly directional antenna such as a parabolic antenna. When transmitting to a receiving antenna of a broadcasting station using a transmitting antenna, a control signal for controlling the direction of the transmitting antenna is transmitted from the telephone device (1), and the control signal is received by the wireless telephone terminal device (4). may be supplied to a motor control circuit for changing the direction of the transmitting antenna for automatic control.

In addition to transmitting such a control signal from one of the telephone device (1) and the wireless telephone terminal device (4) to the other,
It goes without saying that both parties may transmit the information to the other party.

Furthermore, the wireless telephone system according to the present invention can be used not only in broadcasting stations, newspaper companies, etc., but also in government offices, general companies, etc., regardless of the type of industry.
Can be applied.

〔Effect of the invention〕

According to the present invention described above, the first telephone device and the first
In a wireless telephone system having a telephone device and a second wireless telephone device for making a call, the first telephone device can easily control the second telephone device or other electronic equipment in the vicinity thereof. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a radio telephone terminal device of a radio telephone system according to the present invention, FIG. 2 is a block diagram showing an example of a control signal generating device in a telephone device of the radio telephone system, and FIG. 1 is a block diagram showing an example of a radio telephone terminal device of a radio telephone system according to the present invention, and FIGS. 4, 5, and 6 are respectively external views of an example of the radio telephone terminal device of a radio telephone system according to the present invention. Plan view,
A bottom view, a side view, and FIG. 7 are diagrams showing an example of a display of the wireless telephone terminal device. (1) is a telephone device, (2) is a telephone exchange, (3) is a wireless telephone transmitting/receiving station, (4) is a wireless telephone terminal device, (5) is a telephone set, and (7) is a control signal generating device.

Claims (1)

[Scope of Claims] A wireless telephone system comprising a first telephone device and a second wireless telephone device that communicates with the first telephone device, wherein the first telephone device is provided with a control signal generating device. A wireless telephone system, further comprising: a receiving circuit for receiving a control signal generated from the control signal generating device in the second telephone device.