JPH1169014A - Teletext broadcasting distributing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a teletext broadcasting distributing system in which a user can acquire the information of teletext broadcasting in real time by transmitting teletext broadcasting data to a telephone terminal and processing them. SOLUTION: The condition of using the telephone terminal connected to a digital exchange is detected by channels by a subscriber connecting part 9 and a control part 6 controls a distribution part 4 so as to insert the teletext broadcasting data previously stored in a storage part 3 to an on-hooked channel. On the side of a telephone set, on the other hand, in the case of on-hook, transmitted data are stored in an image data storage part 104 and when the end of data transmission is detected, these data are displayed on an image display part 106 by an image control part 105.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext distribution system, and more particularly to a teletext distribution system for distributing teletext to a digital multifunctional telephone terminal having an image display function connected to a digital exchange.

[0002]

2. Description of the Related Art As a conventional method of distributing text broadcasting, there are a radio broadcasting method and a method of performing transmission using an optical cable such as CATV (cable television).

In the former, each terminal requires a dedicated antenna and a tuner to receive wireless data. For this reason, if each individual prepares a terminal that can display teletext information, the cost will increase,
When the physical size of the terminal is considered, it becomes large.

[0004] On the other hand, the latter has a problem that a new cable laying work for CATV is required and a dedicated tuner must be prepared.

When data is received from a digital exchange using a digital multi-function telephone terminal (referred to as a "telephone"), data is transmitted and received to the maximum extent in data transmission and reception in an off-hook state. Transmission and reception of data in the state is performed with a very small amount of data.

[0006] For example, Japanese Unexamined Patent Publication No. 6-233262 discloses that a program reserved from a telephone with a large liquid crystal display is stored in a receiving server via a key telephone main unit and a data module, and the video received from a television signal antenna. When the signal is selected by the receiving server, the teletext signal is extracted, and the teletext program is updated, the receiving server delivers the program to the reserved terminal, and the terminal holds the latest data of the program, On the terminal side, there has been proposed a teletext delivery system for displaying on a liquid crystal display.

[0007]

As described above, in the conventional system, the following description also has a problem.

A first problem is that, in an environment where a plurality of users share a still image information in real time, a terminal for displaying the information by each person or group is required, and each terminal has the same configuration. In order to make the terminal usable with the function described above, the device scale of the terminal itself increases, and the price of the terminal increases.

A second problem is that when information such as a still image is to be obtained by providing a new system, cable lead-in work or the like is required.

A third problem is that in a system using a digital exchange, a line is not effectively used at the time of on-hook because the system is considered mainly for off-hook communication. .

Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to transmit teletext data to a telephone terminal and process the teletext data so that a user can transmit teletext information in real time. To provide a teletext distribution system which is made available to the public. Another object of the present invention is to provide a teletext distribution system that does not require new cable laying work or the like, and suppresses and reduces increases in the price of each terminal and the scale of the device.

[0012]

In order to achieve the above object, the present invention relates to a distribution system for teletext using a digital exchange, wherein the digital multifunction telephone with an image display function is connected to the digital exchange. The off-hook detecting unit detects the use status of each channel, and receives a teletext program in advance on the channel where the on-hook (ie, when not used) is detected, and time-divisions the teletext data stored in the storage unit. In the case of on-hook, the digital multi-function telephone with image display function inserts the data into the multiplexed data, stores the data transmitted from the digital exchange in a temporary storage device as image data, and terminates the normal transmission of the transmission data. Means for displaying the image on the image display unit when the is detected.

[0013]

Embodiments of the present invention will be described. In a preferred embodiment of the teletext distribution system according to the present invention, a digital multifunction device with an image display function connected to a digital exchange (11 in FIG. 1) constituting a teletext distribution device (20 in FIG. 1). The usage status of the telephone terminal (referred to as "telephone terminal") (100 in FIG. 1) is detected for each channel by the subscriber connection unit (9 in FIG. 1) of the digital exchange, and the teletext distribution device 20 is switched to the on-hook channel. The distribution unit (4 in FIG. 1) is controlled by the control unit (6 in FIG. 1) so that the teletext data stored in advance in the storage unit (3 in FIG. 1) is inserted. On the side of 100) in FIG. 1, in the case of on-hook, the transmitted data is stored in the image data storage unit (104 in FIG. 1), and when it is detected that the transmission has been completed, the image control unit ( (105 in FIG. 1) More image display unit (1 in FIG. 1
06).

In the embodiment of the present invention, a teletext receiver is provided on the system without having a teletext receiver on the terminal side, and a teletext distribution device is provided to distribute the received data. By distributing data to digital multifunctional telephone terminals with image display functions using telephone lines used for digital exchanges, no new cable laying work, etc., and text broadcasting to each telephone terminal Since there is no need to provide a tuner having a dedicated receiving function, it is possible to reduce the price and the size of the device.

The use status of the telephone terminal connected to the digital exchange is detected by the off-hook detection unit for each channel, and is stored in the storage unit in the channel detected as not being used (the channel that was on-hook). The distribution unit is controlled by the control unit so that the teletext data is inserted, and in the case of on-hook, the transmitted data is stored in the image data storage unit on the telephone terminal side, and when the data is transmitted, When it is detected that the line has become invalid, the image is displayed on the image display unit by the image control unit, whereby the line can be effectively used.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is a diagram showing the configuration of one embodiment of the present invention. Referring to FIG. 1, in the present embodiment,
The receiving unit 1 of the teletext distribution device 20 includes an antenna for receiving a teletext signal, extracts a received signal, corrects an error, and demodulates the received signal.

The decoder unit 2 discriminates and extracts necessary information (program) from the signal demodulated by the receiving unit 1,
Performs analog-digital conversion.

The storage unit 3 stores the digital data classified by information by the decoder unit 2 for each information, and outputs the stored data in response to a request from the telephone terminal 100 when requested.

The distribution unit 4 performs gate control according to the on-hook information recognized by the control unit 6 to insert information required by the channel into the on-hook channel.

The time division multiplexing unit 5 includes a plurality of subscriber connection units 9
In order to transmit or receive the data from the other party's subscriber connection unit that has made the connection request, the channels are exchanged under the control of the control unit 6, and the data of each channel is multiplexed and demultiplexed. . Further, information from the distribution unit 4 is inserted into the on-hook channel and multiplexed.

The control section 6 mainly includes an off-hook detection section 7, a time division multiplexing section 5, a subscriber connection section 9, and a relay station connection section 1.
0, and control of the distribution unit 4 of the teletext distribution device 20 in addition.

The tone signal generator 7 inserts a tone signal into a channel for which an off-hook is detected, through a time division multiplexing unit.

The push button signal receiving section 8 identifies the push button signal of the channel whose off-hook is detected by the subscriber connection section 9 to identify the connection destination.

The subscriber connection unit 9 connects the digital multifunctional telephone terminal 100 with an image display function (referred to as "telephone terminal") and detects off-hook of the telephone terminal.

[0027] The relay station connecting section 10 mainly accommodates a toll line.

The exchange connecting unit 101 of the telephone terminal 100
It functions as an interface for connecting the digital exchange 11 and the telephone terminal 100.

The function selecting unit 102 sets the
The function of the conventional telephone is selected, and the function of the image data is selected when on-hook.

The telephone function unit 103 has a function as a conventional telephone.

The image data storage unit 104 stores image data selected at the time of on-hook and transmitted from the digital exchange 11.

The image control unit 105 includes the image data storage unit 1
The data stored in the image display unit 10 is read out.
6 and output to the image display unit 106.

The image display unit 106 has a function of displaying information such as teletext.

Next, the operation of one embodiment of the present invention will be described.

An arbitrary radio wave is converted into an electric signal by the antenna of the receiving unit 1 and demodulated. Only the teletext data is extracted from the demodulated signal, error-corrected, and the decoder unit 2 discriminates each program. The signal divided for each program is stored in the storage unit 3.
To memorize.

In the digital multi-function telephone terminal 100 with the image display function, when the receiver is in the on-hook state with the receiver placed, the function selection unit 101 selects the image data storage unit 104.

The subscriber connection section 9 of the digital exchange 11 also has
Similarly, it is detected that it is in the off-hook state, and the control unit 6 is notified. Based on this notification, the control unit 6 controls the distribution unit 4 and transmits the above-described teletext data from the storage unit 3 to the time division multiplexing unit 5 to insert the data into the off-hook channel.

The teletext data inserted into the off-hook channel is output from the time-division multiplexing unit 5, passes through the subscriber connection unit 9, and is transmitted to each telephone terminal 100 connected to the digital exchange 11.

In the telephone terminal 100, the exchange connecting unit 101
After receiving the text broadcast data and converting the electrical level, the data is temporarily stored in the image data storage unit 104 through the function connection unit 102.

When the end of the image data is detected, the digital switch 11 is notified to temporarily end the data transmission.

The teletext data stored in the image data storage unit 104 is transmitted to the image display unit 1 by the image control unit 105.
The data is rearranged into a format that conforms to the specification 06 and transmitted to the image display unit 106 for display.

When telephone terminal 100 is off-hook, function selecting section 102 selects the telephone function section.

At this time, on the digital exchange 11 side, similarly, the off-hook is detected by the subscriber connection unit 9 and the control unit 6
Notify to When the control unit 6 recognizes the off-hook, the tone signal generation unit 7 inserts the tone signal into the channel, and the push button signal transmitted from the telephone terminal 100 is recognized by the push button signal receiver 8 as the telephone number. Identify the connection destination.

If teletext data is transmitted to the digital exchange 1
If 1 goes off-hook during transmission, the end of the data is not detected by the image data storage unit 104 of the telephone terminal 100, so the following processing is not performed. Therefore, no image is displayed.

As one embodiment of the present invention, a case where image data is requested from two terminals will be described with reference to FIG. The programs requested by each terminal are different, and are two types of A and B respectively.

An arbitrary radio wave is converted into an electric signal by the antenna of the receiving unit 1 and demodulated. The teletext data of the program A is extracted from the demodulated signal, error-corrected, and distinguished by the decoder unit 2-1. At the same time, the program B is also extracted, corrected for errors, and distinguished by the decoder unit 2-2. The signals divided for each program are stored in the storage unit 3-1 for the program A and the storage unit 3-2 for the program B.

Two digital multifunctional telephone terminals with image display function (referred to as "telephone terminals") 100-1 and 100-2
Is assumed to be in an on-hook state with the receiver placed.

At this time, the telephone terminals 100-1 and 100-2
Has selected the image data storage unit 104. In addition, the telephone terminal a 100-1 selects the program A and the telephone terminal b 100-2 selects the program B, which is set in advance in the digital exchange 11 and the teletext distribution device 20 from each telephone terminal. And

Similarly, the subscriber connection units 9-1 and 9-2 also recognize that they are in the off-hook state based on the absence of loop detection, and notify the status register (not shown) of the control unit 6. .

Based on this notification, the distribution unit 4 transmits and inserts the teletext data to the time division multiplexing unit 5 at the timing for inserting the program A into the time slot of the telephone terminal that has requested it. The teletext data inserted into the on-hook channel is transmitted from the time division multiplexing unit 5 to the subscriber connection unit 9-.
1 and is converted to an electric level, and then transmitted to the telephone terminal 100-1 connected to the digital exchange 11. Similarly, the program B is inserted into the time slot of the telephone terminal b 100-2 by the distribution unit 4 and the time division multiplexing unit 5 and transmitted to the telephone terminal 100-2.

The data received by the switching unit 101 of the telephone terminals 100-1 and 100-2 is converted into an electric level and then temporarily stored in the image data storage unit 104 through the function connection unit 102. Start and end of image data,
Then, when the image control unit 105 detects that the data is normal, the next process is started.

The text broadcast data stored in the image data storage unit 104 is transmitted to the image display unit 1 by the image control unit 105.
The data is rearranged into a format that conforms to the specification 06, transmitted to the image display unit 106, and displayed on the image display unit 106. The same applies to the telephone terminal 100-2.

When the telephone terminal 100-1 goes off-hook, the function selecting unit 102 selects the telephone function unit 103. At this time, also on the digital exchange 11 side, the off-hook of the telephone terminal 100-1 is similarly detected by the subscriber connection unit 9-1 and notified to the control unit 6. When the control unit 6 recognizes the off-hook state, the tone signal generation unit 7 inserts a tone signal into the channel, and the push button signal transmitted from the telephone terminal 100-1 is recognized by the push button signal receiver 8 for the telephone number. To identify the connection destination.

If teletext data is transferred to the digital exchange 1
If 1 goes off-hook during transmission to the telephone terminal, the image control unit 105 does not detect that the data is normal. At this time, the data is discarded, and no image is displayed.

[0053]

As described above, according to the present invention, the following effects can be obtained.

A first effect of the present invention is that by transmitting teletext data to a telephone terminal and processing it, a user can obtain teletext information in real time.

The reason is that, in the present invention, a user who constructs a network by using a digital exchange can use an existing network.

A second effect of the present invention is that the channel can be effectively used by constantly using the channel of the digital exchange.

The reason is that, in the present invention, teletext data is transmitted to the telephone terminal by effectively using the time when the line is not used.

A third effect of the present invention is that the price of a terminal that receives teletext can be reduced.

A fourth advantage of the present invention is that the increase in the scale of the terminal device that receives teletext is suppressed and reduced, and the size is reduced.

The reason is that, in the present invention, the teletext receiver can be concentrated without providing it on the terminal side.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a specific configuration of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving part 2 Decoder part 3 Storage part 4 Distributing part 5 Time division multiplexing part 6 Control part 7 Tone signal generating part 8 Push button signal receiving part 9 Subscriber connecting part 10 Relay station connecting part 20 Teletext distributor 100 Image display function Digital multifunctional telephone terminal 101 with switchboard exchange unit 102 function selection unit 103 telephone function unit 104 image data storage unit 105 image control unit 106 image display unit

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI H04N 7/025 H04N 7/08 A 7/03 7/035

Claims (3)

[Claims] 1. A teletext distribution system using a digital exchange, wherein an off-hook detection unit detects the use status of a digital multi-function telephone with an image display function connected to the digital exchange, for each channel, In other words, when a text broadcast program is received in advance and the text broadcast data stored in the storage unit is inserted into the channel in which (i.e., not used) is detected, the digital multi-function telephone with the image display function performs on-hook operation. In this case, the apparatus further comprises means for accumulating data transmitted from the digital exchange as image data in a temporary storage device, and displaying the completion of normal transmission of the transmission data on an image display unit. Teletext distribution system to be. 2. A digital exchange constituting a teletext distribution apparatus, wherein a use state of a digital multifunctional telephone terminal with an image display function connected to the digital exchange is detected for each channel by a subscriber connection section of the digital exchange. In the digital exchange, the teletext data is inserted into the time-division multiplexed data, and the distribution unit is inserted so that the teletext data stored in the storage unit of the teletext distribution device is inserted into the on-hook channel. Controlled by a control unit, the teletext data is inserted into time-division multiplexed data in the digital exchange, while the digital multifunction telephone terminal with the image display function is transmitted from the digital exchange in the case of on-hook. The incoming data is stored in the storage unit inside the telephone terminal, and the transmission is completed. A teletext distribution system, characterized in that when such a situation is detected, it is displayed on an image display unit. 3. A digital multi-function telephone terminal having an image display function, comprising: an exchange control unit for controlling an interface with an exchange; a telephone function unit acting as a normal telephone function; an image data storage unit; A function selection unit for selecting an image data when on-hook, an image data storage unit, and reading out data stored in the image data storage unit and converting the data into a format of an image display unit, 3. A teletext distribution system according to claim 1, further comprising: an image control unit for transmitting the broadcast data to the teletext broadcasting system.