JPH0126585B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a video telephone device that forms a local area network and communicates with each other.

Conventional configuration and its problems When a videophone that performs mutual communication between stations is in a "busy" state, all stations that request a call during the busy state are reserved and registered as interrupting stations.Counter station identification number registration means When the "busy" state ends, it searches for standby stations that have already been reserved and calls are made one after another. However, since the reservation registration is remembered until the end of the call, the called party does not need to make a call. There was a problem in that I had to make another call to clear the memory.

OBJECT OF THE INVENTION The present invention eliminates the conventional drawbacks as mentioned above,
The receiving station searches for interrupt calling stations that have been reserved during a call and calls are made in order of urgency and importance, but if the recipient determines that the call is not necessary, the calling station identification number is displayed on the display device during the search. It is possible to cancel the reservation registration by sending a reset signal while it is visibly displayed, and it is also possible to cancel the reservation registration from the transmitting station side by sending a reset signal to the receiving station. The purpose is to effectively operate a large number of video telephone stations connected on a bus network.

Structure of the Invention The videophone of the present invention connects a plurality of videophone stations to the same cable, and when the calling station calls the receiving station and the receiving station is in a busy state, the receiving station calls the calling station. a partner station identification number registration means for accepting and registering a reservation as an interrupting station; a registration storage means for storing the identification number of the calling station; and a display means for visually displaying the identification number of the calling station;
a search means for searching for an arbitrary number from among the identification numbers of the calling station stored in the registration storage means when the busy state of the receiving station ends; and operation of the receiving station during the search by the searching means. and reservation registration cancellation means for inserting a reset signal to cancel the reservation registration while the identification number of the calling station that has been determined by the person as unnecessary to make a call is displayed on the display means. It is.

In addition, in the videophone of the present invention, a plurality of videophone stations are connected to the same cable, and when the calling station calls the receiving station and the calling station is busy, the receiving station calls the calling station. a partner station identification number registration means for accepting and registering a reservation as an interrupting station; a registration storage means for storing the identification number of the calling station; a display means for visually displaying the identification number of the calling station; a search means for searching for an arbitrary one from among the identification numbers of calling stations stored in the registration storage means when the intermediate state ends; and a calling station which is not required to make a call while the calling station which has been reserved and is on standby is on standby. The present invention is characterized in that it includes a reservation registration cancellation means that sends a reset signal to the receiving station to cancel the reservation when the reservation is canceled.

In a videophone with such a configuration, when the videophone stations connected on the bus network become "busy" in mutual communication, the receiving station makes a reservation to decide whether or not to accept the calling station as an interrupt station. The determining means and the partner station identification number registration means for receiving and registering are activated, and the registration storage means for storing the identification number of the calling station is activated. Furthermore, call requests from other video telephone stations are also registered and stored as interrupt stations. When the "busy" state ends, the identification numbers of the calling stations on standby are sequentially displayed on the display means, and the called party uses the search means to select the waiting station based on its urgency and importance, and then searches for it and communicates with it. .

The registration memory is stored until the end of the call, so if the recipient decides that the call is not necessary and cancels the reservation registration, the caller's identification number is displayed on the display means during the above search. A reset signal is sent and the reservation registration is deleted by the reservation registration deletion means. Further, when the calling station which has registered a reservation and is in a standby state determines that the call is no longer necessary during the standby, it transmits a reset signal to the receiving station and cancels the reservation registration using the reservation registration canceling means. This results in
Efficient operation of mutual communication can be achieved.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram of a receiving station equipped with a reservation function. A call request signal sent through a coaxial cable 1 connecting a transmitting station and a receiving station is applied to a data receiving means 4 through a data transmitting/receiving combiner 3 in a bidirectional distributor 2.
If this is activated when the receiving station is "busy," the operating state management means 5 displays the identification number of the originating station on the display device 6, and the reservation determining means 7 determines whether or not to accept the reservation. Determine whether If reservations can be accepted, the partner station identification number registration means 8
The registration storage means 9 is activated to automatically store the information. Even when a call request is received from another calling station, it is stored in sequence and reserved in the same way.

On the other hand, if the storage capacity is exceeded and the reservation cannot be accepted, the reservation determination means 7 sends a data control signal to the data transmission means 10, the data transmission/reception synthesizer 3, and the bidirectional data transmission/reception combiner 3. The signal is sent to the coaxial cable 1 through the distributor 2, and transmitted as an answer back signal to the originating station, informing it that it is in the "busy" state.

Next, when the receiving station's "busy" state ends, the identification number of the transmitting station, which has already been registered as described above, is displayed on the display device 6, so the receiving station presses the numeric keypad 11 on the display device 6. When a manual input is made according to the displayed contents, the calling station is selected and called, and as described above, a data signal is sent to the calling station through 10, 2, 3, and 1 to request a call.

The storage capacity of the registration storage means 9 can store up to 8 stations, but it can be expanded or expanded as needed.
Can be expanded.

The transmitting stations registered and stored in the registration storage means 9 through the partner station identification number registration means 8 can be sequentially displayed on the display device 6 by operating the search button 12 on the receiving station side and activating the search means 13. This allows you to know which station is requesting a call to your station. Therefore, the receiver can select an urgent and important calling station from among them, and manually input the identification number of the calling station using the numeric keypad 11 as described above to call and make a call.

Also, if there is a calling station that the recipient determines is unnecessary to make a call during the search, a reset signal is sent by pressing the reset button 14 while the identification number of that calling station is displayed on the display device 6. Then, the identification number of the calling station stored in the registration storage means 9 can be deleted by the reservation registration deletion means 15.

Furthermore, if the calling station that has registered a reservation and is on standby determines that it is no longer necessary to make a call while it is on standby, it can operate the reset button 14A shown in the functional block diagram of the calling station side in FIG. When the reset signal is sent, the operating state management means 5A and the reservation registration canceling means 16A are activated, and the reset signal is set to 10A,
3A, 2A, 1A, 1, 2, 3, 4, 5, 7 and 8 to the registration storage means 9 to cancel the reservation.

3, 4, 5, and 6 are flowcharts showing the operations of the originating station and the receiving station carried out by a video telephone station equipped with the reservation reception registration devices 18, 18A having the various functions described above. It is.

Incidentally, for a call at a video telephone station, when the above-mentioned 18 is activated and the operation means 17 is activated, the transmission signal switching circuit 1 is activated.
9, one station 20A of the RF converter 20 ~
20P is operated, the signals from the microphone 21 and the television camera 22 are sent out through the mixing circuit 23, and then sent through the signal transmitting means 24, the signal transmitting/receiving signal combiner 25, the bidirectional distributor 2, and the coaxial table 1 to the other party's station. sent to. Further, when the above-mentioned 18 is activated and the operation means 17 is activated, a communication line is opened and the video signal from the other station is transmitted to 1, 2, 25, 26.
The image is received by the cathode ray tube 27, and then sent to the speaker 28.
works.

As mentioned above, the receiving station searches for a standby station from among the registered stations that accept reservations connected to the bus network, determines the urgency and importance of the call, and decides whether or not to make the call. If so, the reservation registration will be deleted. Further, the calling station also cancels the reservation registration when it becomes unnecessary to make a call while on standby. This allows both parties to have valuable communication.

Effects of the Invention As described above, according to the present invention, reservation registration can be canceled for a calling station that is judged by the receiving station to be unnecessary for a call from among waiting calling stations registered for reservation acceptance during a call. Even if a call is requested but the calling station determines that the call is unnecessary while on standby, the calling station can cancel the reservation registration, allowing efficient mutual communication between stations connected on the bus network. It is something that can be done.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram of a receiving station of a videophone according to an embodiment of the present invention, FIG. 2 is a functional block diagram of a transmitting station of the same videophone, and FIGS.
5 and 6 are flowcharts showing the operations of the transmitting station and receiving station in the videophone. 1, 1A... Coaxial cable, 2, 2A... Bidirectional distributor, 3, 3A... Data transmission/reception combiner, 4, 4A... Data receiving means, 5, 5A...
Operating state management means, 6, 6A...Display device, 7,
7A... Reservation determination means, 8, 8A... Partner station identification number registration means, 9, 9A... Registration storage means, 1
0, 10A...Data transmission means, 11, 11A...
...Numeric keypad, 12,12A...Search button, 13,1
3A... Search means, 14, 14A... Reset button, 15, 15A... Reservation registration deletion means, 16.
16A... Reservation registration cancellation means, 17, 17A...
Operation means, 18, 18A... Reservation reception registration device,
19... Transmission signal switching circuit, 20, 20A~20
P...RF converter, 21... Microphone,
22...TV camera, 23...Mixing circuit, 24
... Signal transmission means, 25 ... Signal transmission/reception combiner, 26 ... Signal reception means, 27 ... Braun tube, 28 ... Speaker.

Claims (1)

[Scope of Claims] 1. A plurality of video telephone stations are connected to the same cable, and when the transmitting station calls the receiving station in their mutual communication and the receiving station is busy, the receiving station interrupts the calling station. a partner station identification number registration means for accepting and registering a reservation as a destination station; a registration storage means for storing the identification number of the calling station; a display means for visually displaying the identification number of the calling station; and a busy state of the receiving station. a search means for searching for an arbitrary number from among the calling station identification numbers stored in the registration storage means when the call is completed; and a search means for searching for any calling station identification number stored in the registration storage means; A video telephone characterized by comprising reservation registration cancellation means for canceling reservation registration by inserting a reset signal while the calling station identification number is displayed on the display means. 2. When multiple videophone stations are connected to the same cable, and the transmitting station calls the receiving station in their mutual communication and the receiving station is busy, the receiving station accepts a reservation for the calling station as an interrupt station and registers it. registering means for storing the identification number of the calling station; display means for visually displaying the identification number of the calling station; Search means for searching for any calling station identification number stored in the registration storage means, and receiving a reset signal when the calling station registered and on standby becomes unnecessary for a call while on standby. A videophone characterized by comprising a reservation registration canceling means for canceling the reservation by transmitting it to the station.