JP2008072294A - In-building telephone system having television broadcasting distribution function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in-building telephone system allowing one to view one-segment broadcast with an IP telephone without providing any tuners for one-segment broadcast for each telephone. <P>SOLUTION: The main device comprises: a digital tuner 18; a program storage means F58 for storing a channel being received; a program determination means F53 for determining a reception channel when priority is equal to priority that is being received currently or higher when a reception channel change request is notified from the IP telephone; a program updating means F51 for instructing the reception channel to the digital tuner 18; a conversion circuit 19 for converting the demodulation output of the digital tuner 18; and an image transmission means F52 for transmitting a converted signal to the IP telephone. The IP telephone has: an image display means; a program selection means for selecting the reception channel; and a program notification means for notifying the main device of selected information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a private telephone system capable of delivering a television broadcast to a telephone having a function of displaying a moving image.

  One of the terrestrial digital broadcasting services, a one-segment partial reception service (hereinafter also referred to as “one-segment”) for mobile phones and mobile terminals (hereinafter also referred to as mobile phones) was started on April 1, 2006. 1Seg can be received stably on mobile phones, etc., but for the time being, the broadcasting area is limited, and because it uses a different frequency from mobile phones, The area in which 1Seg can be received is different (see, for example, Patent Document 1).

  On the other hand, in order to receive 1Seg, it is necessary to incorporate a digital tuner dedicated to 1Seg into a mobile phone or the like. A mobile phone or the like having a function capable of simply displaying a moving image can watch a TV broadcast by 1Seg. The phenomenon of being unable to occur has occurred.

  Although a technique for distributing a wide variety of moving image data to a mobile phone or the like having a function capable of simply displaying a moving image has been disclosed, this is a method for converting a media file once stored. It is not suitable for moving image display that requires immediacy such as television broadcasting (see, for example, Patent Document 2).

In addition, in the private telephone system used in offices, even if the telephone connected to the extension does not have a built-in digital tuner dedicated to 1Seg even if it has a function that can display moving images, There is a problem that the TV broadcast cannot be viewed.
JP 2006-020128 A JP 2003-230117 A

  The problem to be solved is that one seg TV broadcasting can be distributed to a telephone having a function capable of displaying a moving image without providing a digital tuner dedicated to one seg on the telephone, and can be simultaneously viewed on a plurality of such telephones. Is to be able to do it.

  In order to solve the above-mentioned problems, the present invention provides a local telephone system comprising a main apparatus accommodating one or more external lines and a plurality of IP extensions, and an IP telephone having a moving image display function connected to the IP extensions. , A tuner unit that receives a television broadcast and selects one program in the main device, priority means for setting priority information for each IP telephone in advance, reception channel information of the television broadcast, and Program storage means for storing the priority information of the pre-used IP telephone that has selected the reception channel information, and the reception means of the TV broadcast received from any of the IP telephones are set in the priority means. The priority information corresponding to the IP telephone is compared with the priority information of the pre-use IP telephone stored in the program storage means, and the priority order of the IP telephone is compared. If the priority is equal to or higher than the priority of the pre-use IP telephone stored in the program storage means, the program determining means for determining the reception channel of the television broadcast based on the reception channel information notified from the IP telephone; A program for updating the contents of the program storage means based on the reception channel information of the television broadcast determined by the program determination means and the priority order information of the IP telephone and instructing the tuner section of the reception channel information of the television broadcast Update means, image conversion means for converting the demodulated output of the tuner unit that has received the television broadcast of the reception channel designated by the program update means into a signal format that can be displayed on an IP telephone, and the signal converted by the image conversion means Is transmitted to the IP telephone, and the IP telephone includes the image transmission means. Image display means for receiving a signal transmitted by the transmission means and displaying an image; program selection means for selecting a reception channel of the television broadcast to be viewed; and reception channel information of the television broadcast selected by the program selection means. Program notifying means for notifying the main apparatus.

  According to the present invention, it is possible to distribute a one-segment TV broadcast to an IP telephone having a function of displaying a moving image without providing a one-segment dedicated digital tuner on the telephone, and simultaneously using a plurality of the IP telephones. It is possible to provide a very economical private telephone system that can be viewed.

  Hereinafter, embodiments of the present invention will be described. In the following embodiment, a case where the present invention is applied to a button telephone apparatus (hereinafter also referred to as an IP button telephone apparatus) capable of accommodating an IP (Internet Protocol) extension as a private telephone system will be described as an example. An apparatus and a wired IP button telephone (hereinafter also referred to as an IP telephone) connected to the main apparatus will be described as an example. However, the present invention is not limited to this. For example, a private branch exchange (hereinafter also referred to as PBX) capable of accommodating an IP extension and an IP telephone connected to the PBX, or a server constituting the IP telephone apparatus and an IP telephone connected to the server are used. (It may be an IP phone with a built-in server function). A wireless IP telephone can be used instead of the wired IP telephone.

  FIG. 1 is a schematic configuration diagram of a main apparatus 10, an IP telephone 20, a switching HUB 40, and a LAN connection device 41 such as a color TV door phone (hereinafter also referred to as a TV door phone) constituting an IP button telephone device according to the present invention. FIG. FIG. 2 is a functional block diagram of the central control unit 11 and the storage unit 16 of the main apparatus 10 according to the present invention. FIG. 3 is a schematic sequence diagram of the main apparatus 10 and the IP telephone 20 according to the present invention. FIG. 4 is a diagram showing an example of seat arrangement in an office or the like where the private telephone system according to the present invention is installed.

  First, the outline of the configuration of the main apparatus 10, the IP telephone 20, the switching HUB 40, and the TV door phone 41 that constitute the IP button telephone apparatus according to the present invention will be described with reference to FIG. The IP button telephone apparatus includes a main apparatus 10 that accommodates one or more external lines and a plurality of extensions, and a plurality of IP telephones 20-1 to 20-n connected to the button telephone main apparatus 10.

  The main apparatus 10 includes a central control unit 11, a highway 12, one or more external circuit 13-1 to 13 -n, a transmission circuit 14, a plurality of extension circuits 15-1 to 15 -n, and a storage unit 16. And an antenna 17, a digital tuner 18, and a conversion circuit 19.

  The central control unit 11 performs analysis and determination on input information (including information from the IP telephone 20) from each circuit of the main device 10, inputs / outputs information to / from the storage unit 16, and controls each circuit.

  The highway 12 performs exchange processing in the main device 10 (connection of the external lines 13-1 to 13-n and the internal lines 15-1 to 15-n, etc.). The main device 10 in this embodiment is configured as a composite system that can accommodate a combination of an extension circuit for an IP telephone and an extension circuit for a conventional key telephone that is not compatible with the IP. Has been.

  The external line circuits 13-1 to 13-n are interface circuits connected to the external line. The external line disclosed in this embodiment includes a general public line, a line of an IP telephone carrier, a dedicated line, a private line, a wireless line such as a mobile phone (using a wireless / wired conversion adapter), and the like. It is.

  The transmission circuit 14 is an interface circuit for communicating various control data with the IP telephones 20-1 to 20-n and delivering image display data (MPEG-4) to the IP telephones 20-1 to 20-n.

  The extension circuits 15-1 to 15-n are interface circuits for communicating voice data with the IP telephones 20-1 to 20-n. In addition, as described above, the conventional extension circuit for a key telephone that does not support IP is configured to be accommodated in a mixed manner.

  In addition to functioning as a normal storage unit, the storage unit 16 has priority information preset for each IP telephone, digital TV broadcast reception channel information, and priority information of an IP telephone that has selected the reception channel information. In addition, the number of IP telephones simultaneously watching digital television broadcasting, the number of program change refusals, and the like are stored.

  The antenna 17 is an antenna for receiving digital television broadcasting (UHF: 13 to 62 ch), and is installed on the upper outer peripheral side of the main device 10. In addition, when a digital television broadcast is received by a mobile body such as an automobile, the diversity method is adopted and publicly known, but the diversity method is not particular. An antenna may be installed outside.

  One digital tuner 18 is used to demodulate the reception channel designated by the central control unit 11 using the OFDM (Orthogonal Frequency Division Multiplexing) demodulation algorithm for the radio wave of the one-segment digital television broadcast received by the antenna 17. And “MPEG-2TS”. This output format digital tuner is configured in consideration of adaptability to a mobile phone or the like. The present invention is intended to provide a private telephone system that can economically receive digital television broadcasts, and therefore the standard product is adopted as much as possible. Further, an analog tuner may be used instead of a digital tuner.

  The conversion circuit 19 is a circuit for converting “MPEG-2TS”, which is a demodulated output of the digital tuner 18, into “MPEG-4”, which is an image display data format of the IP telephones 20-1 to 20-n. When an analog tuner is used instead of a digital tuner, the conversion circuit 19 performs analog-to-digital conversion.

  The IP telephone 20 includes a control unit storage unit 21, a data transmission / reception circuit 22, a voice processing unit 23, a handset 24, a speaker 25, a dial key 26, an outside line key 27, a function key 28, An LCD 29 and a human sensor 30 are included.

  The control unit storage unit 21 analyzes and determines input information from each circuit in the IP telephone 20 and controls each circuit. When the detection of the human sensor 30 is detected, there is screen change means for changing the digital television broadcast image displayed on the LCD 29 as image display means to a preset screen display. In addition, it has program notification means for notifying the reception channel information of the digital television broadcast selected by the program selection means via the data transmission / reception circuit 22.

  The data transmission / reception circuit 22 is an interface circuit for communicating audio data and control data with the main apparatus 10 and receiving image display data via an extension. As the image display data, “MPEG-4” is adopted as a signal format in consideration of connectivity with a LAN connection device 41 such as a color television door phone connected via the switching HUB 40.

  The voice processing unit 23 controls voice digital / analog conversion, analog / digital conversion, call path switching with the handset 24 and the speaker 25 in the IP telephone set 20, and volume.

  The handset 24 is a handset for performing transmission and reception during a general call.

  The speaker 25 is used for sending an outside line ring tone, receiving a loud voice from the speaker, and the like.

  The dial key 26 is a means for inputting a telephone number, and is also used as an input means for various settings generally used in an IP button telephone apparatus. Furthermore, it is also used as a program selection means for selecting a reception channel of a digital television broadcast to be viewed by a combination operation with the function key 27.

  The outside line key 27 is a plurality of buttons for selecting an outside line to be used from one or more outside lines, and an LED display for displaying the state of the outside line (incoming, in use, on hold, etc.) corresponding to the button. A display (display means) is provided.

  A plurality of function keys 28 are provided and are input means such as a “hold” button, a “loud reception” button, and a “setting” button which are generally used in a button telephone apparatus. Further, it is also used as a program rejection unit that rejects the reception channel change information displayed by the program display unit.

  The LCD 29 displays caller information and the like when an incoming call is received, and displays a dialed number and a call time when making a call. It is also used as image display means and program display means.

  The human sensor 30 is installed on the outer peripheral side of the IP telephone 20 and is used to detect persons other than the user of the IP telephone. Here, FIG. 4 shows an example of seat arrangement in an office or the like where the private telephone system according to the present invention is installed. In general, there is a manager's desk, and a general staff's desk is formed in the form corresponding to the manager's desk. As an example of usage, the general staff will be described on the premise that the manager does not view the digital television broadcast but the manager views the digital television broadcast. Usually, it is premised on watching a program that is safe even if other people know that they are watching a digital television broadcast. However, if a user wants to watch a program that other people do not want to know, see FIG. When a person comes within the detection range shown, this is detected, and the digital TV broadcast image is changed to a preset screen display (for example, a calendar display or a menu screen that is a standby state display of a normal telephone). , It is possible to prevent the content being watched from being understood even if another person approaches the manager desk.

  In FIG. 2, a switching HUB 40 is a general one used in a LAN, and may have a PoE power supply function. The main apparatus 10 and the IP telephones 20-1 to 20-n are concentrated. It is also connected to a LAN connection device 41 such as a color TV door phone via the switching HUB 40. Needless to say, the LAN connection device includes a personal computer, a printer, and the like.

  Next, functional configurations of the central control unit 11 and the storage unit 16 of the main apparatus 10 according to the present invention will be described with reference to FIG. In the main apparatus 10, the central control unit 11 has a data transmission / reception means F50, a program update means F51, an image transmission means F52, a program determination means F53, a priority change means F54, a program request means F55, and a program change request. A reception timer F56, and the storage unit 17 includes priority order means F57, program storage means F58, simultaneous storage means F59, and program change refusal number F60.

  In this embodiment, two methods are described as methods for selecting a reception channel for digital television broadcasting. One is a method in which, when the IP telephones 20-1 to 20-n specify a reception channel, the priority is compared with the priority of the IP telephone that previously specified the reception channel, and when the IP telephones are equal or higher, switching to the reception channel (hereinafter referred to as the reception channel) Is called the priority method). The other is that when the IP telephones 20-1 to 20-n designate a reception channel, the reception channel is notified to other IP telephones as reception channel change information (reception channel change request). This is a method of switching to the receiving channel when the change of the receiving channel is not rejected by the IP telephone, or when the number of rejected is not more than a predetermined number (hereinafter referred to as a rejection right method). These two methods are selected according to the request of the user of the private telephone system according to the present invention. However, the extension is divided into groups, the veto right method is used in the group, and the other group is used. You may use as a so-called mixed system of using a priority system.

  The data transmitter / receiver F50 communicates control data with the IP telephones 20-1 to 20-n via the transmission circuit 14. When the data received from the IP telephones 20-1 to 20-n is the reception channel information, and in the case of the priority system, the reception channel information is notified to the program determination unit F53 and the priority change unit F54, and in the case of the rejection right system Has a function of notifying the program request means F55 of the reception channel information. In this case, the IP telephone that has selected the reception channel information is hereinafter also referred to as a first IP telephone. In the case of the refusal right method, when receiving the notification of the reception channel change information from the program request means F55, it has a function of transmitting data to the IP telephones 20-1 to 20-n that need the notification. Yes. In this case, audible signal transmission instruction data indicating that the reception channel change information is displayed may be transmitted together with the visible display of the program number as the reception channel change information.

  The data transmitting / receiving means F50 has a function of notifying the program determining means F53 when the data received from the IP telephones 20-1 to 20-n is program change refusal information in the case of the refusal right method. ing. In this case, the IP telephone that has transmitted the program change information is hereinafter also referred to as a second IP telephone.

  Upon receiving the notification of the reception channel information from the program determination unit F53, the program update unit F51 instructs the digital tuner 18 to receive the reception channel and notifies the image transmission unit F52 of the program change, and the program stored in the storage unit 17 The storage means F58 has a function of overwriting the reception channel information and the priority information of the IP telephones 20-1 to 20-n (hereinafter also referred to as pre-used IP telephones) that have selected the reception channel information. Yes.

  When the image transmission unit F52 receives a notification of program change from the program update unit F51, if the transmission circuit 14 is not distributing image display data, the image transmission unit F52 instructs distribution to the IP telephones 20-1 to 20-n. It has a function.

  When receiving the notification of the reception channel information from the data transmission / reception unit F50 in the case of the priority system, the program determination unit F53 selects the IP telephones 20-1 to 20-n (hereinafter also referred to as selected IP telephones) that have selected the reception channel information. .) Is retrieved from the priority means F57 of the storage unit 16, and the priority information and the priority information of the pre-use IP telephone stored in the program storage means F58 of the storage unit 16 are retrieved. In comparison, when the priority order of the selected IP telephone is equal to or higher than the priority order of the pre-used IP telephone, the function has a function of notifying the program update means F51 of the reception channel information.

  Further, when the program decision means F53 receives notification of program change refusal information from the data transmission / reception means F50 in the case of the refusal right method, the program decision means F53 obtains priority order information corresponding to the first IP telephone and the second IP telephone. A search is made from the priority order means F57 of the storage unit 16, the priority information corresponding to the first IP telephone is compared with the priority information corresponding to the second IP telephone, and the priority of the second IP telephone is determined. If the priority is equal to the priority of the first IP telephone, the program change rejection number F60 in the storage unit 16 is added (updated), and the priority of the second IP telephone exceeds the priority of the first IP telephone. If it is, the program change rejection number F60 in the storage unit 16 is updated to a specific value (for example, the maximum value). The specific value described above is the maximum value, but may be 1/3, 1/2, or the like, and may be appropriately changed according to the intention of the user. Moreover, you may change with time zones, such as a daytime, night, and midnight.

  Further, when the program determination means F53 receives a notification of the expiration of measurement from the program change request reception timer F56, the program determination means F53 compares the value of the simultaneous storage means F59 of the storage unit 16 with the value of the program change rejection number F60, and rejects the program change. When the value of the number F60 is ½ or less of the value of the simultaneous storage means F59, it has a function of notifying the program update means F51 of the reception channel information selected by the first IP telephone. Although the above-described determination value is 1/2 or less, it may be 2/3 or less, or 1/3 or less, and may be appropriately changed depending on the intention of the user. Moreover, you may change with time zones, such as a daytime, night, and midnight.

  The priority changing unit F54 monitors the reception channel information notified from the data transmission / reception unit F50 in the case of the priority method, and when there is no notification of the reception channel information for a certain period of time (for example, 10 minutes), the IP with the lower priority order. A function to update the priority information of the pre-use IP telephone stored in the program storage means F58 of the storage unit 16 to the lowest priority so that the reception channels can be changed also by the telephones 20-1 to 20-n. is doing. The fixed time described above may be configured to change depending on the time zone, for example, 10 minutes in the day, 30 minutes in the night, 1 hour in the midnight, and the like.

  When the program request unit F55 receives the notification of the reception channel information from the data transmission / reception unit F50 in the case of the rejection right method, the program request unit F55 receives the reception channel information and the reception channel information stored in the program storage unit F58 of the storage unit 16. When the reception channels are not the same, the second IP telephone has a function of notifying the reception channel change information. The program request means F55 has a function of notifying the program change request acceptance timer F56 of the start of measurement and initializing (erasing etc.) the program change refusal number F60 in the storage unit 16. Further, upon receiving notification of the reception channel information from the data transmission / reception means F50, the program request means F55 stores the number of IP telephones 20-1 to 20-n that are currently viewing the digital television broadcast as the simultaneous viewing number. It has a function of overwriting the simultaneous storage means F59 of the unit 16.

  The program change request acceptance timer F56 has a function of starting measurement upon receiving a measurement start notification from the program request means F55, and notifying the program determination means F53 of the completion of measurement when the measurement is completed (for example, 10 seconds). ing.

  In the priority order means F57 of the storage unit 16, priority order information corresponding to the IP telephones 20-1 to 20-n is preset and stored. As an example of the priority order information, in order from the highest priority order, the order is as follows: A: Sales office manager, B: Sales leader, C: General salesman, D: General office work.

  The program storage means F58 of the storage unit 16 stores reception channel information of digital television broadcasting currently being distributed and priority information of the pre-use IP telephone.

  The simultaneous storage means F59 of the storage unit 16 stores the number of IP telephones 20-1 to 20-n that are simultaneously viewing digital television broadcasts.

  The program change refusal number F60 in the storage unit 16 stores the number of program change refusal information notified from the second IP telephone.

  FIG. 3 is a schematic sequence diagram of the main apparatus 10 and the IP telephones 20-1 to 20-n. The upper part shows the case of the priority order system and the lower part shows the case of the refusal right system.

  FIG. 4 has already been described.

Schematic configuration diagram of a main apparatus 10, an IP telephone 20, a switching HUB 40, and a LAN connection device 41 (hereinafter also referred to as a TV door phone) such as a color TV door phone constituting the IP button telephone device according to the present invention. Functional block diagram of central control unit 11 and storage unit 16 of main apparatus 10 according to the present invention Schematic sequence diagram of main apparatus 10 and IP telephone 20 according to the present invention The figure which shows the seat arrangement example of the office etc. which installs the local telephone system which concerns on this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main apparatus 11 Central control part 12 Highway 13 External circuit 14 Transmission circuit 15 Extension circuit 16 Storage part 17 Antenna 18 Digital tuner 19 Conversion circuit 20 IP telephone 21 Control part Storage part 22 Data transmission / reception circuit 23 Voice processing part 24 Handset 25 Speaker 26 Dial keys 27 External keys 28 Function keys 29 LCD
30 human sensor 40 switching HUB
41 LAN connection equipment such as color TV door phone F50 Data transmission / reception means F51 Program update means F52 Image transmission means F53 Program determination means F54 Priority change means F55 Program request means F56 Program change request reception timer F57 Priority order means F58 Program storage means F59 Simultaneous storage Means F60 Program change refusal number

Claims (1)

In a local telephone system comprising a main apparatus accommodating one or more external lines and a plurality of IP extensions, and an IP telephone having a moving image display function connected to the IP extensions,
In the main device,
A tuner unit that receives a TV broadcast and selects one program;
Priority ordering means for setting priority order information in advance for each IP telephone;
Program storage means for storing the reception channel information of the television broadcast and the priority information of the pre-use IP telephone that has selected the reception channel information;
When any of the IP telephones is notified of the TV broadcast reception channel information, the priority information corresponding to the IP telephone set in the priority means and the pre-used IP telephone stored in the program storage means When the priority order information is compared and the priority order of the IP telephone is equal to or higher than the priority order of the pre-use IP telephone stored in the program storage means, the television broadcast is based on the received channel information notified from the IP telephone. Program determining means for determining the receiving channel of
Based on the reception channel information of the television broadcast determined by the program determination unit and the priority information of the IP telephone, the stored contents of the program storage unit are updated and the tuner channel is instructed to receive the channel information of the television broadcast. Program update means;
Image conversion means for converting the demodulated output of the tuner unit that has received the television broadcast of the reception channel instructed by the program update means into a signal format that can be displayed on an IP telephone;
Image transmission means for transmitting the signal converted by the image conversion means to an IP telephone,
IP phones include
Image display means for receiving a signal transmitted by the image transmission means and displaying an image;
A program selection means for selecting a reception channel of a television broadcast to be viewed;
A private telephone system comprising: program notification means for notifying the main unit of reception channel information of the television broadcast selected by the program selection means.

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