JP2000013411A - Digital broadcasting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To respectively individually control the outputs of respective speakers concerning a broadcasting device to be used for the private broadcasting facility of a building or the like. SOLUTION: Plural pieces of speaker terminal equipment 31, 31... are connected through a bus to a transmission line 1 for broadcasting in digital broadcasting line configuration. Data provided by multiplexing plural pieces of acoustic data provided from a microphone 21 or playing equipment 22 in time division manner and control data for controlling which acoustic data are to be outputted from the respective speakers 31, 31... are inputted to the transmission line 1 from the main equipment 23. On the side of respective pieces of speaker terminal equipment 31, 31..., according to the control data, any one of respective acoustic data is selected, converted to sounds and outputted. In this case, in addition to the speaker terminal equipment 31, various kinds of terminal equipment 41-81 are connected through a bus to the transmission line 1 and these pieces of terminal equipment 41-81 are controlled by a main unit 23 as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcasting device used for, for example, a public address (PA) facility of a building, and more particularly, to a signal such as an acoustic signal from a broadcasting device body to a broadcasting terminal device such as a speaker. The present invention relates to a broadcast apparatus to which a so-called digital transmission technique is applied, in which the digital signal is transmitted when digitized.

[0002]

2. Description of the Related Art Conventionally, as a broadcasting apparatus used in a building's in-plant broadcasting equipment, there is a broadcasting apparatus as shown in FIG.
As shown in the figure, this device has a plurality of (N) speaker lines 101, 101,... Then, each of these speaker lines 101, 1
01,... Respectively have a plurality of speakers 102, 1
02 are connected. Note that, in the broadcasting device configured to connect a plurality of speakers 102, 102,... To each of the speaker lines 101, 101,.
It is the mainstream that is a generally known high impedance line.

In FIG. 1, a portion 103 surrounded by a dashed line is the main body of the broadcasting device. The device main body 103 has a matrix device 104 inside. The matrix device 104 has a plurality of input terminals and a plurality of output terminals (none of which are shown), and arbitrarily connects these input / output terminals according to a preset program. (Left side of the figure)
Has a plurality of microphones 105, 105,.
.. And a plurality of input devices serving as a sound source of the broadcasting device, such as the performance devices 106, 106,. On the other hand, each output terminal (on the right side in the figure) of the matrix device 104 is connected to each of the speaker lines 101, 101,... Via amplifiers 107, 107,. ing.

According to the broadcasting device configured as described above,
By the program set in the matrix device 104,
It is possible to arbitrarily control which of the microphones 105, 105,... And the performance devices 106, 106,.

The apparatus main body 103 is installed in a so-called machine room such as a broadcast room in a state where the above-described components except the microphones 105, 105,... Are housed in, for example, a stationary storage rack. You. In addition, each microphone 10
Some of 5, 105,... Are provided in rooms other than the machine room. Then, each of the performance devices 10
6, 106,... Include, for example, a cassette deck, a CD (compact disk) player, and an audio memory device. The speaker selector 108 here is used to switch all the broadcasts of the systems 1 to N to the emergency broadcast by activating it in an emergency, for example. Are directly connected between the output sides 107, 107,... (The output terminals of the matrix device 104) and the speaker lines 101, 101,.

Further, each speaker line 1 wired from the apparatus main body 103 to each broadcasting area for each system 1 to N is provided.
Are laid, for example, behind the ceiling or wall of a building. The speakers 102, 102,... For each of the systems 1 to N are appropriately arranged at predetermined locations in each broadcast area, for example, a ceiling or a wall surface.

[0007]

However, in the above-mentioned conventional broadcasting device, a so-called star wiring for connecting a plurality of speaker lines 101, 101,... , There is a problem that wiring between the apparatus main body 103 and each of the speaker lines 101, 101,... Becomes complicated. This problem becomes more conspicuous as the number of speaker lines 101, 101,...

Also, as described above, since each of the speaker lines 101, 101,... Is an analog high impedance line, they are connected to the same speaker line 101 (the same system). Speaker 10
The outputs (sound sources) of 2, 102,... Are all the same. Therefore, although it is possible to select a sound source for each of the systems 1 to N, the sound sources of the speakers 102, 102,... Provided for each of the systems 1 to N are individually controlled (selected). It is not possible.

If, for example, the inside of each system 1 to N is further subdivided, or each speaker 10
When the combination of the speakers 102, 102,... For each of the systems 1 to N is changed, for example, a part of
The wiring work of 1, 101,... Is required. But,
As described above, each speaker line 101, 101,.
In view of the fact that the wires are wired through the ceiling, the wall, etc., the above-mentioned wiring work is performed, that is, each output system 1 to N
Is virtually impossible to change.

Therefore, according to the present invention, the speaker lines 101, 101,
Are replaced by digital transmission lines. Then, by connecting all speakers to a common digital transmission line, for example, one (set), the wiring of the entire apparatus is simplified, and the output of each speaker can be individually controlled. Accordingly, it is an object of the present invention to provide a broadcasting device capable of freely changing a combination of speakers constituting each output system at any time. In addition to the speakers, various display devices such as a liquid crystal (LCD) panel device and a CRT display device,
Another object of the present invention is to provide a broadcasting device in which devices other than speakers, such as a surveillance camera and a sound collecting microphone, are connected to the transmission line, and information handled by these devices can also be transmitted through the transmission line. The purpose of this.

[0011]

In order to achieve the above-mentioned object, the present invention as defined in claim 1 of the present invention provides a main unit and a broadcasting transmission having a digital transmission line structure connected to the main unit. And a plurality of first broadcast terminal devices connected to the broadcast transmission line via a bus, wherein the main device controls each of the first broadcast terminal devices individually. Main control means for generating data and inputting the data to the broadcast transmission path; and receiving one or more digitized first broadcast data, for example, time-division multiplexing each of the first broadcast data to form the broadcast data. Main transmission means for inputting to the transmission line for use, wherein each of the first broadcast terminal devices comprises:
A first output control means for fetching the main control data from the broadcast transmission path and generating a broadcast data selection command based on the main control data; and a first output control means for transmitting the first broadcast data from the broadcast transmission path. To capture each of these first
Broadcast data selecting means for selecting the broadcast data corresponding to the broadcast data selection command from among the broadcast data, and the first broadcast data selected and obtained by the broadcast data selecting means, And first information output means for outputting information based on the data.

Here, the first broadcast data referred to here is:
For example, it refers to sound data obtained by digitizing sound information such as voice or music, character data or graphic data, and so-called video data obtained by digitizing still images or moving images. The first information output means can be constituted by various display devices such as a speaker device, a liquid crystal panel device, and a CRT display device.

According to the first aspect of the present invention, each of the first
Of broadcast terminals are connected to one (set) of broadcast transmission paths. Then, the main apparatus transmits main control data for individually controlling each of the first broadcast terminal apparatuses to the broadcast transmission path and a plurality of time-division multiplexed first control terminal apparatuses.
Is input. These main control data and each first broadcast data are taken in each first broadcast terminal device, and in each first broadcast terminal device,
Among the first broadcast data, the one designated by the main control data (broadcast data selection command) is selected by the broadcast data selection means, and information based on the selected first broadcast data, for example, sound, text, Visual information such as a graphic or a video is output from the first information output means. Therefore, under the control of the main unit (main control unit), the information to be output from each first broadcast terminal unit (first information output unit), that is, the transmission source of the information to each first broadcast terminal unit, is individually set. Can be selected. When the main control data indicating that none of the broadcast data is selected is given to a certain first broadcast terminal device,
No information is output from the first information output means of the first broadcast terminal device, that is, the first broadcast terminal device is in an output off state.

According to a second aspect of the present invention, in the digital broadcasting apparatus according to the first aspect of the present invention, a part or all of the first broadcast data is digital information such as sound or music. Part of or the whole of the first broadcast terminal device, as the first information output means, converts the first broadcast data input thereto into sound. Speaker means for outputting the output.

According to a third aspect of the present invention, in the digital broadcasting apparatus according to the first aspect, a part or all of the first broadcast data is a display obtained by digitizing visual information. A display in which a part or all of the first broadcast terminal device is the first information output means, which converts the first broadcast data inputted thereto into visual information and outputs the visual information; Means.

The display data referred to here is, for example, character data, graphic data, video data obtained by digitizing a still image, a moving image, or the like. Examples of the display unit include an LED matrix display device in which a plurality of light emitting diodes (LEDs) are arranged in a matrix, a liquid crystal panel device, a CRT display device, a plasma display (PLD) device, an optical projection (projector) device, and the like. There is.

According to a fourth aspect of the present invention, in the digital broadcast apparatus according to the first aspect, a part of each of the first broadcast data is sound data obtained by digitizing sound information. Some or all of the first broadcast data other than the sound data is display data obtained by digitizing visual information, and some or all of the first broadcast terminal devices are Speaker means for converting the first broadcast data inputted thereto into sound and outputting the same, as first information output means, display means for converting the first broadcast data into visual information and outputting the same, At least one of the following.

That is, the invention described in claim 4 includes both the components described in claim 2 and the invention described in claim 3.

The invention according to claim 5 is the invention according to claims 1, 2,
In the digital broadcast apparatus according to the invention described in 3 or 4, in each of the first and second broadcast terminal apparatuses, the first output control means may include the main control unit fetched from the broadcast transmission path. A broadcast data processing unit configured to generate a broadcast data processing command based on the data, and processing the first broadcast data selected by the broadcast data selection unit in accordance with the broadcast data processing command; The first broadcast data processed by the data processing means is configured to be input to the first information output means.

The processing content of the broadcast data processing means mentioned here means that the first broadcast data is sound data, and the first information output means for outputting information based on the sound data is a speaker. If it is a device, the volume and sound quality (Tone) of the sound output from this speaker
Refers to processing for adjusting the like. Further, when the first broadcast data is, for example, display data and the first information output means is a display device, characters or graphics displayed on the display device are enlarged or emphasized. To perform the so-called image processing, such as adjusting the brightness and contrast of the video or performing filtering (filtering), corresponds to the processing contents of the broadcast data processing means. I do.

That is, according to the fifth aspect of the present invention,
Under the control of the main device (main control means), the volume and sound quality of the sound output from the respective speakers are individually adjusted for each first broadcast terminal device, or characters displayed on each display device. And graphics, and image processing on video.

The invention according to claim 6 is the invention according to claims 1, 2,
In the digital broadcast apparatus according to the invention described in 3, 4, or 5, the broadcast transmission path transmits a first transmission line for transmitting first broadcast data and data other than the first broadcast data. A second transmission line for causing
It consists of.

That is, according to the invention described in claim 6,
Each first broadcast data is transmitted from the main device to each first broadcast terminal device via the first transmission line. Then, data other than the first broadcast data, that is, main control data, is transmitted via the second transmission line.

[0024] The invention according to claim 7 is the invention according to claims 1, 2,
7. The digital broadcasting apparatus according to the invention described in 3, 4, 5, or 6, wherein one or more second broadcasting terminal devices are connected to the broadcasting transmission path by a bus, and the main control means of the main device transmits the main control data. As described above, each of the second broadcast terminal devices is also individually controlled, and data including the second broadcast data corresponding to each of the second broadcast terminal devices is generated. A second output control unit configured to input the main control data from the broadcast transmission line and generating an output control command based on the main control data. Means, and second information output means for outputting information based on the corresponding second broadcast data in accordance with the output control command.

The second broadcast data mentioned here means, for example, character data, graphic data, and the like having a smaller data size than the above-described sound data, video data, and the like. As the second information output means, for example, LE
There are a D matrix display device and a liquid crystal panel device. As a second information output means, for example, a bell or a buzzer,
Alternatively, an alarm device including an LED, a red lamp, or the like may be used, and a command for operating each of these alarm devices may be generated as the second broadcast data.

According to the seventh aspect of the present invention, in addition to the first broadcast terminal device, a second broadcast terminal device is also connected to the broadcast transmission path via a bus. Then, as the main control data, data for individually controlling each of the second broadcast terminal devices in addition to the first broadcast terminal device and second broadcast data having a relatively small data capacity include: It is input from the main device to the broadcast transmission path. Then, the main control data including the second broadcast data is taken into each of the second broadcast terminal devices via the broadcast transmission path, and is transmitted from the respective second information output means to the second broadcast terminal. Information based on the data, for example, characters and graphics, or an alarm is output. That is, the second broadcast data having a smaller capacity than the first broadcast data is transmitted to each second broadcast terminal device as main control data separately from the first broadcast data.

[0027] The invention according to claim 8 is the invention according to claims 1, 2,
In the digital broadcasting device according to the invention described in 3, 4, 5, 6 or 7, one or more environment detecting terminal devices are connected to the broadcasting transmission path by a bus, and the main control means of the main device performs the main control process. It is configured to generate data for individually controlling each of the environment detection terminal devices as data, and to input the data to the broadcast transmission line. Environment detecting means for detecting, detecting data transmitting means for inputting detection data obtained by the environment detecting means to the broadcast transmission path in accordance with a detection control instruction, and fetching the main control data from the broadcast transmission path Detection control means for generating the detection control command based on the main control data, wherein the main device includes: It is provided with a signal means.

The environment detecting terminal device referred to here is
For example, a surveillance camera, a sound collecting microphone, and the like are provided as the environment detecting means.

According to the eighth aspect of the present invention, in addition to the first broadcast terminal device (and the second broadcast terminal device) that outputs information such as sound and video, the broadcast transmission path includes: The environment detection terminal device is also connected to the bus. Then, data for individually controlling each of the environment detection terminal devices as the main control data is input to the broadcast transmission path from the main device, and the main control data is stored in each of the environment detection terminal devices. It is captured. Each environment detection terminal device,
In accordance with the main control data (detection control command), detection data obtained by detection by the environment detection means, for example, video data captured by a surveillance camera, and sound collection data obtained by sound collection by a sound collection microphone are transmitted to a broadcasting station. Input to the transmission path. The detection data input to the broadcast transmission path is received by the detection data receiving means on the main device side. Therefore, each of the environment detection terminal devices can be individually controlled by the main device (main control unit), and detection data such as video and audio detected by each of the environment detection terminal devices can be taken into the main device. Can be.

According to a ninth aspect of the present invention, in the digital broadcasting apparatus according to the eighth aspect of the present invention, in a part or all of each of the environment detecting terminal devices, the detection control means includes the broadcast transmission terminal. A detection data processing unit configured to also generate a detection data processing command based on the main control data taken from the road, and processing detection data obtained by detection by the environment detection unit in accordance with the detection data processing command; And the detection data processed by the detection data processing means is input to the broadcast transmission path by the detection data sending means.

The processing contents of the above-mentioned detection data processing means include, for example, processing for compressing detection data obtained by detection by the environment detection means, or performing various image processing such as filtering processing. There is. When the environment detecting means is, for example, a surveillance camera, there is a process of detecting an intruder, a fire, or the like from video data captured by the camera.

According to the ninth aspect of the present invention, each of the environment detection terminal devices transmits a signal to the main device (detection data receiving means).
The detection data processed by the detection data processing means is sent.

According to a tenth aspect of the present invention, in the digital broadcast apparatus according to the eighth or ninth aspect, the main control means of the main unit transmits the detected data obtained by the detection data receiving means to the main control means. The main control data is configured to be partially or entirely updated based on the main control data.

According to the tenth aspect of the present invention, on the main device side, the main control means controls a part or all of each terminal device based on the detection data sent from the environment detection terminal device. Update the main control data for control. As a result, the controlled state of each terminal device, specifically, the terminal device to be controlled by this update changes.
Therefore, each terminal device can be controlled in accordance with the detection data obtained by detection by the environment detection terminal device, that is, the surrounding environment.

For example, it is assumed that the environment detection terminal device and the first broadcast terminal device are installed in a certain space.
Among them, the environment detecting terminal device is provided with a sound collecting microphone as the environment detecting means, and detects noise in the certain space by the sound collecting microphone. On the other hand, the first broadcast terminal device is provided with a speaker as the first information output means, and emits sound (broadcast sound) into the certain space by the speaker. In such a case, if the main control data is updated by the main control means so as to adjust the volume of the loudspeaker according to the magnitude of the noise obtained by the sound pickup microphone, the certain space Automatic adjustment of the speaker volume according to the noise environment inside the speaker can be realized.

It is also assumed that the environment detecting terminal device has, for example, a monitoring camera as environment detecting means. In this case, when the surveillance camera detects an illegal intruder, a fire, or the like, the main control data is updated in accordance with the detected data, for example, to output an alarm from a speaker of the first broadcast terminal device. Then, a kind of security system can be realized. Further, the first broadcast terminal device may be configured as the first information output unit,
For example, when a display device such as a CRT display is provided, an image captured by the surveillance camera is displayed on the display device, or information indicating that the illegal intruder or fire has been detected. Can also be displayed. Further, the means for displaying such information or outputting the alarm is not limited to the first broadcast terminal device.
The second broadcast terminal device provided as the information output means can be used.

The eleventh aspect of the present invention relates to the eighth and ninth aspects.
Alternatively, in the digital broadcasting device according to the aspect of the present invention, as the broadcast transmission path, at least a third transmission line for transmitting the detection data is a transmission line for transmitting data other than the detection data. Is provided separately.

According to the eleventh aspect of the present invention, at least so-called upstream detection data sent from each environment detection terminal device to the main device is transmitted from a line for transmitting other data, that is, from the main device side to each terminal device. The data is transmitted via a third transmission line different from the transmission line for so-called downstream data sent to the side. Note that, among the downlink data, data for controlling each environment detection terminal device, for example, data corresponding to the detection control command or the detection data processing command may be transmitted via the third transmission line. it can.

According to a twelfth aspect of the present invention,
2. The digital broadcasting device according to the invention described in 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, wherein one or more control terminal devices are connected to the broadcasting transmission path by bus. The main control means of the device is configured to generate data for individually controlling each of the control terminal devices as the main control data, and to input this to the broadcast transmission line, A terminal device for generating sub-control data for controlling the main device in accordance with a terminal control command given from the outside, and a sub-controller for inputting the sub-control data to the broadcast transmission path in accordance with a call command Control data sending means, and sending control means for taking in the main control data from the broadcast transmission path and generating the call command based on the main control data, Providing control data receiving means for taking in the sub-control data from the broadcast transmission path, the main control means, based on the sub-control data obtained by the control data receiving means, a part of the main control data or It is configured to update all.

The term "control terminal device" used herein means, for example, when a certain first broadcast terminal device has a speaker as first information output means, a volume controller for adjusting the volume of the speaker. And a sound source selector for changing the sound source (that is, sound data) of the speaker. When a certain first broadcast terminal device includes a display device as first information output means, an adjuster for adjusting brightness and contrast of the display device, a display screen (channel) of the display device, ) Can be provided as the control terminal device. Further, in the case where a second broadcast terminal device and an environment detection terminal device are provided in addition to the first broadcast terminal device, a device for controlling the terminal devices other than the first broadcast terminal device is also described above. It can be provided as a control terminal device.

According to the twelfth aspect of the present invention, a control terminal device is also bus-connected to the broadcast transmission path.
Then, for this control terminal device (sub-control means),
When a terminal control command is given from the outside, sub-control data corresponding to the command is transmitted to the main device via the broadcast transmission path. The timing of sending the sub-control data is controlled by main control data (call command) sent from the main device. Then, on the main device side, the main control means updates the main control data based on the sub-control data sent from the control terminal device, whereby each terminal device (specifically, the control The controlled state of the target terminal device changes. Therefore, each terminal device can be indirectly controlled by the control terminal device.

The thirteenth aspect of the present invention provides the first aspect,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 1
2. In the digital broadcasting apparatus according to the invention, a part or all of each of the terminal devices may be configured to check its own state and check data obtained by the checking unit in accordance with a check control command. Test data sending means for inputting to the broadcast transmission path, and test control means for capturing the main control data from the broadcast transmission path and generating the test control command based on the main control data, The main device is provided with test data receiving means for taking in the test data from the broadcast transmission path.

Here, the above-mentioned inspection means means, for example, to inspect each terminal device itself for an abnormal portion, or to check the operation status of each terminal device itself (the state controlled by the main device). Means such as means for confirming.

According to the thirteenth aspect of the present invention, each inspection means provided in each terminal device inspects the state of each terminal device itself. Then, the inspection data is input to the broadcast transmission path in accordance with main control data (inspection control command) sent from the main device. The test data input to the broadcast transmission path is received by the test data receiving means of the main device.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a digital broadcasting apparatus according to the present invention will be described with reference to FIGS.
Note that the present embodiment has the greatest feature in that a so-called digital transmission technique of digitizing and transmitting the audio signal from the broadcasting apparatus main body to each speaker is applied to the broadcasting apparatus. . Also, by applying this digital transmission technology, it is possible to realize a broadcasting device that can not only broadcast sound information but also visual information such as characters, figures, or images. The present embodiment is significantly different from the above-described conventional broadcasting apparatus in these points. Further, in the present embodiment, in addition to broadcasting the above information, for example, a monitoring camera, a sound collecting microphone, or the like may be provided, and the monitoring video, sound collecting data, and the like captured by these may be taken into the device body. Implement a broadcasting device.

FIG. 1 is a block diagram showing the overall configuration of the present embodiment. In FIG. 1, reference numeral 1 denotes a broadcasting transmission line having a digital transmission line configuration, and one end of the broadcasting transmission line 1 is connected to the broadcasting apparatus main body 2 of the present embodiment. Then, a plurality of speakers 3, 3,...
Are connected via the speaker interface unit 30, respectively. Each speaker 3, 3, ...
Are connected to a plurality of output systems 1 to N, for example, for each broadcasting area, as shown by the dotted lines in FIG.

Further, in addition to the above-mentioned speakers 3, 3,..., For example, a volume controller 4 (system 1), a sound source selector 5 (system 2), Display 6
(System n), monitor television 7 (system n + p), surveillance camera 8 (system N), etc.
0, 50, 60, 70, and 80 are connected.
FIG. 3 shows the sound volume controller 4, the sound source selector 5,
Although only one display 6, monitor television 7, and surveillance camera 8 are described on behalf of each of the systems 1 to N, these are actually included in the systems 1 to N represented by the respective systems. Not limited to this, it is assumed that a plurality of other systems 1 to N are provided as appropriate.

On the other hand, the apparatus main body 2 has a main device 23 to which a plurality of microphones 21 and a plurality of performance devices 22 are connected (in FIG. Although described, in an actual configuration, it is assumed that a plurality of units are provided.) In addition, the device main body 2 includes the microphone 2
1 and the performance device 22, a video device 24, a recording / playback device 25, a speaker 26, and a monitor television 27.
Are connected to one or more, for example, a plurality. The video device 24 includes, for example, a VTR (video tape recorder) device and a DVD (digital versatile disk) device. The recording / reproducing device 25 includes, for example, a VTR device and a writable DVD device. The monitor television 27 includes, for example, a CRT display device, a liquid crystal display device, and a plasma display device.

The main unit 23 converts each sound signal output from each microphone 21 and each performance device 22 into
.. Are supplied to the respective speakers 3, 3,... Via the common broadcast transmission line 1, and at this time, the respective acoustic signals are digitized and transmitted. However, in order to simultaneously transmit a plurality of digitized audio signals, so-called audio data, via the common broadcast transmission line 1, it is necessary to multiplex each audio data. Therefore, in the present embodiment, each of the above sound data is time-division multiplexed in the main device 23 and then input to the broadcast transmission path 1.

The sound data thus time-division multiplexed are converted into the respective speakers 3, 3,.
..., the speakers 3, 3,... Do not know which sound data should be used to output a sound, and since the sound data is a digital signal, Is not output. Therefore, in the present embodiment, each of the speakers 3, 3,.
Each microphone 21 and each performance device 22
The control data including a so-called sound source selection command for controlling which one is used as a sound source is generated and supplied to the speakers 3, 3,... Via the broadcast transmission line 1. Each of the speakers 3, 3,... Selects one of the multiplexed sound data based on a sound source selection command included in the control data, and selects this sound data. In order to convert the obtained acoustic data back into an analog signal, the above-described interface units 30, 30,... Are provided. The control data corresponds to the main control data described in the claims, and each sound data corresponds to the first broadcast data described in the claims.

In addition to the sound source selection command, the control data also includes a so-called volume adjustment command and a sound quality adjustment command for adjusting the volume and sound quality of each speaker 3, 3,. include. In the speakers 3, 3,..., The respective interface units 30, 30,..., Based on the volume adjustment command and the sound quality adjustment command included in the control data, ,... Are configured to adjust the volume and sound quality of the sound to be output. A combination of the speaker 3 and the interface unit 30 corresponds to the terminal device 3 corresponding to the first broadcast terminal device described in the claims.
1 specifically corresponds to a first broadcast terminal device provided with a speaker 3 as corresponding to the first information output means described in the claims.

Further, the main unit 23 is configured to reflect the operated state of the above-mentioned volume controller 4 connected to the broadcast transmission path 1, that is, the volume controller 4 is operated. Has a function of adjusting the volume of predetermined speakers 3, 3,..., For example, speakers 3, 3,. ing. In order to realize this, the main device 23 generates a calling command for calling the operated state of each volume controller 4, and inputs this to the broadcast transmission path 1 as the control data. On the other hand, on the volume controller 4 side, the above-described interface unit 40 fetches the control data from the broadcast transmission line 1 and operates the current volume controller 4 according to the call command included in the control data. Check the situation. Then, it generates volume adjustment data corresponding to the operated state and transmits it to the main device 23 via the broadcast transmission line 1. The main device 23, based on the volume adjustment data received via the broadcast transmission path 1,
The content of the control data (volume adjustment command) is updated to adjust the volume of the speakers 3, 3,... In the system 1, and the updated content is input to the broadcast transmission line 1. Thus, the volume of the speakers 3, 3,... In the system 1 is adjusted. The combination of the volume controller 4 and the interface unit 40 forms a terminal device 41 corresponding to the control terminal device described in the claims.

The main unit 23 is also configured to reflect the above-described controlled state of the sound source selector 5, that is, when the sound source selector 5 is operated, Have a function of changing the sound source of the predetermined speakers 3, 3,..., For example, the speakers 3, 3,. In order to realize this, the main device 23 generates a call command for calling the operated state of each sound source selector 5 as in the case of the volume selector 4, and uses this as a control data for broadcasting. Input to transmission line 1. On the other hand, on the sound source selector 5 side, the above-described interface unit 50 fetches the control data from the broadcast transmission path 1 and operates the current sound source selector 5 according to the call command included in the control data. Check the situation. Then, the sound source selection data corresponding to the operated state is generated and transmitted to the main device 23 via the broadcast transmission line 1. The main device 23, based on the sound source selection data received via the broadcast transmission path 1,
The contents of the control data (sound source selection command) are updated so as to change the sound sources of the speakers 3, 3,... In the system 2, and are input to the broadcast transmission path 1 again. Thus, the sound sources of the speakers 3, 3,... In the system 2 are changed. Note that the combination of the volume controller 5 and the interface unit 50 is also the same as the volume control terminal device 4.
Similarly to the first embodiment, it corresponds to the control terminal device described in the claims, that is, forms a sound source selection terminal device 51.

Further, the main unit 23 transmits, for example, text and graphic data, in addition to the above-described sound data, to the broadcast transmission path 1.
, And has a function of displaying the same on the display 6 described above. In order to realize this, the main device 23 generates character data or graphic data to be displayed on each of the display devices 6 and designates which display device 6 to display each of the data, a so-called so-called “device”. A display designation command is generated, and these are input to the broadcast transmission line 1 as the control data. In each of the display units 6, the interface unit 60 captures the control data from the broadcast transmission line 1 and displays the character data or the graphic data according to the captured control data (display designation command). Is displayed on the container 6. The display 6 here includes, for example, an LED matrix display and a liquid crystal panel device. The combination of the display 6 and the interface unit 60 corresponds to the terminal device 6 corresponding to the second broadcast terminal device described in the claims.
1 and more specifically corresponds to a second broadcast terminal device provided with the display 6 as corresponding to the second information output means described in the claims. Further, the character data and graphic data correspond to the second broadcast data described in the claims.

The main unit 23 transmits the so-called reproduced video data obtained by digitizing the reproduced video signals of the video device 24 and the recording / recording / reproducing device 25 via the broadcast transmission line 1 and converts the data into the data. It also has a function of displaying a video based on each of the monitor televisions 7 described above. In order to realize this, the main apparatus 23 multiplexes the above-mentioned reproduced video data, for example, in a time-division multiplex manner, inputs the multiplexed video data to the broadcast transmission path 1, and transmits the reproduced video data (signal) to the monitor television 7. Also, a so-called video selection command indicating which of the above is supplied is generated, and this is input to the broadcast transmission line 1 as the control data. As will be described later, since each of the reproduced video data has a larger data capacity than the acoustic data,
The main device 23 compresses each of the reproduced video data,
Time-division multiplexing is performed as described above, and this is
To enter.

Then, on each monitor television 7 side,
Based on the video selection command included in the control data, one of the multiplexed reproduced video data is selected, and the selected reproduced video data is decompressed and further converted to an analog signal. In order to perform the conversion again, the above-described interface units 70 are provided. In addition,
Examples of the monitor television 7 here include a CRT display device, a liquid crystal panel device, a plasma display device, and an optical projection device. The combination of the monitor television 7 and the interface unit 70 is the same as the speaker terminal device 31 described above, and a terminal device 7 corresponding to the first broadcast terminal device described in the claims.
1 corresponds to a first broadcast terminal device provided with a monitor television 7 as a device corresponding to the first information output means described in the claims. The reproduced video data also corresponds to the first broadcast data described in the claims, similarly to the audio data described above.

The control data includes, as commands for controlling the monitor terminal device 71, in addition to a video selection command, for example, adjusting the brightness and contrast of each screen for each monitor television 7, Alternatively, a so-called screen adjustment command for performing a predetermined filtering process on the reproduced video data is also included. Then, on each monitor terminal device 71 side, each interface unit 70 is configured to adjust a screen (video) displayed on each monitor television 7 based on a screen adjustment command included in the control data. .

In the present embodiment, the monitoring data such as video and audio captured by the monitoring camera 8 described above is recorded by, for example, the recording / reproducing device 25 provided on the device body 2 side.
Alternatively, it is configured to be able to output to the speaker 26 and the monitor television 27. In order to realize this, the main device 23 converts the monitoring data captured by any of the monitoring cameras 8 into
A camera selection command that indicates whether the data is to be taken into the main device 23 is generated, and this is used as the control data as the broadcast transmission line 1.
To enter. In each surveillance camera 8, each of the above-mentioned interface units 80 provided respectively captures the control data and, based on the camera selection command included in the control data, monitors the image captured by its own surveillance camera 8. It is determined whether transmission of the data to the main device 23 is designated. Then, the designated interface unit 80 compresses the monitoring data captured by the monitoring camera 8 connected thereto and transmits the compressed monitoring data to the main device 23 via the broadcast transmission path 1. On the main unit 23 side, the compressed monitoring data input via the broadcast transmission line 1 is expanded, and the expanded monitoring data is transmitted to the recording / recording / playback device 25 or the speaker 2.
6 or input to the monitor television 27.

The surveillance camera 8 referred to here corresponds to the environment detecting means described in the claims, and monitoring data such as video and audio captured by the surveillance cameras 8 is described in the claims. Corresponds to the detected data. Then, a terminal device 81 corresponding to the environment detecting terminal device described in the claims is formed by the combination of the monitoring camera 8 and the interface unit 80.

The control data includes a command for controlling the camera terminal device 81 and a so-called command for performing a predetermined filtering process on the monitoring data captured by the monitoring camera 8 in addition to the camera selection command. A monitoring data processing command is also included. Then, each camera terminal device 8
On one side, each interface unit 80
Is configured to process the monitoring data based on a monitoring data processing command included in the control data, and input the processed data to the broadcast transmission line 1.

Further, in the present embodiment, a power superimposing section 28 is provided in the apparatus main body 2, and the main apparatus 23 and the broadcast transmission line 1 are connected via the power superimposing section 28. . The power superimposing unit 28 generates a DC voltage and superimposes the DC voltage on the broadcast transmission line 1. The DC voltage superimposed on the broadcast transmission line 1 is applied to each of the terminal devices 31 to 81.
On the side, each is used as a drive power supply.

The overall configuration and operation of this embodiment are as described above. Next, the partial configuration and operation of each component will be described in detail.

FIG. 2 shows an apparatus main body 2, in particular, a main apparatus 23,
FIG. 3 is a block diagram showing in detail each configuration of a device main body 2 and a connection portion between the broadcast transmission line 1. As shown in FIG. 1, the broadcast transmission line 1 has three lines: a control data line 11, a downlink data line 12, and an uplink data line 13. These lines 11, 12, 1
Each of the wires 3 is composed of, for example, a generally known unshielded twisted pair wire (UTP: unshielded twisted pair wire).

The control data line 11 is a transmission line for transmitting the above-described control data for individually controlling each of the interface units 30 to 80. The control data line 11 also transmits, in addition to the control data, sound volume adjustment data and sound source selection data sent from the sound volume controller 4 and the sound source selector 5 to the apparatus main body 2 (main device 23). Note that the control data line 11 corresponds to a second transmission line described in the claims.

On the other hand, among the data other than the so-called control data such as the above-mentioned control data, the data inputted from the apparatus main body 2 to the broadcast transmission line 1, that is, the above-mentioned sound data and each reproduction data This is a transmission line for transmitting video data. As will be described later, each of the above-described audio data and each of the reproduced video data is time-division multiplexed when input to the downlink data line 12. This downstream data line 12 corresponds to a first transmission line described in the claims.

The upstream data line 13 is a transmission line for transmitting data input to the apparatus main body 2 via the broadcast transmission path 1, that is, the above-described monitoring data. The upstream data line 13 corresponds to a third transmission line described in the claims.

The main unit 23 has a CPU inside.
(Central processing unit) 231. This CPU
Reference numeral 231 is connected to the control data line 11 via the modulation / demodulation unit 232 and the power superimposition unit 28, and transmits and receives the control data to and from each of the terminal devices 31 to 81 described above. The CPU 231 is connected to an operation unit 233 having, for example, a plurality of push button keys for giving an external command to the CPU 231. In addition, character data, graphic data, and the like to be displayed on each of the above-described display devices 6 can be input from the operation unit 233. Further, the CPU 231 has a display unit 23 of, for example, a CRT or a liquid crystal panel configuration for displaying the operation status of the CPU 231.
And a storage unit 235 having, for example, a semiconductor memory configuration in which a program for controlling the operation of the CPU 231 is stored.
Is connected.

The main unit 23 has an information exchange unit 236 controlled by the CPU 231. The information exchange unit 236 transmits / receives data via the downlink data line 12 and the uplink data line 13, that is,
The audio data, the reproduced video data, and the monitoring data are arranged. For example, a DSP (Digital Signal Processor)
And the like. The information exchange unit 236
Is connected to the downlink data line 12 via the modulation unit 237 and the power superimposition unit 28, and is connected to the uplink data line 13 via the power superimposition unit 28 and the demodulation unit 238.

The microphone 21, performance device 22, video device 24, recording / reproducing device 25, speaker 26, and monitor television 27 are connected to the information exchange unit 236. The information exchange unit 2
36 handles digital signals such as audio data, reproduced video data, and monitoring data, as described above.
1, A / D converters 239, 240 and 241 are provided between the performance device 22 and the video device 24, respectively. A / D between the recording / reproducing device 25
A D / A converter 243 is provided, and D / A converters 245 and 246 are provided between the speaker 26 and the monitor television 27, respectively. Further, the information exchange unit 236 handles large data such as the reproduced video data and the monitoring data in a compressed state.
The video device 24, the recording / reproducing / playback device 25, and the monitor television 27 that exchange these data (strictly speaking,
The A / D converter 241, the A / D / D / A converter 243, and the D / A converter 246) have a data compression unit 242, a data compression / decompression unit 244, and a data decompression unit 247, respectively.
Is provided.

The power superimposing section 28 generates a DC voltage serving as a drive power supply for each of the terminal devices 31 to 81 and superimposes the DC voltage on the broadcast transmission line 1 as described above. The DC voltage is supplied to the control data line 11
And the downstream data line 12.

FIG. 3 shows each speaker terminal device 31, 31,
.. Are shown in detail. As shown in the figure, the interface unit 30 of the speaker terminal device 31 also has a CPU 32 inside. The CPU 32 is connected to the control data line 11 via the modulation / demodulation unit 33, that is, can communicate with the CPU 231 on the main device 23 side. The speaker 3 includes an amplifier 34, a D / A converter 35,
It is connected to the downlink data line 12 via the selection unit 36 and the demodulation unit 37, and among these, the selection unit 36
It is configured to be controlled by U32.

That is, the CPU 32 controls the control data line 1
1 according to the control data (the above-mentioned sound source selection command) input via the modem 33.
The selection unit 36 is controlled so that only one audio data is selected from among the audio data and the reproduced video data input to the selection unit 36 through the demodulation unit 37 from. Then, the acoustic data selected by the selection unit 36 is D / A
The signal is supplied to the speaker 3 via the converter 35 and the amplifier 44. The selection unit 36 also has a function of adjusting the volume and sound quality of the sound output from the speaker 3 under the control of the CPU 32. The CPU 32 controls the control data (volume adjustment command and sound quality adjustment command). , The control of the sound volume and the sound quality by the selection unit 36 is controlled. Note that the selecting unit 36 corresponds to the broadcast data selecting unit and the broadcast data processing unit described in the claims, and the CPU 3
Reference numeral 2 corresponds to first output control means. And the sound source selection command corresponds to the broadcast data selection command described in the claims, and the volume adjustment command and the sound quality adjustment command are:
Corresponds to a broadcast data processing command.

Each operation of the CPU 32 is controlled by a program stored in a storage section 38 of, for example, a semiconductor memory configuration connected thereto. As shown in the figure, a DC voltage superimposed between the control data line 11 and the downstream data line 12 is extracted from the interface unit 30 and each component in the interface unit 30 is extracted from the DC voltage. A power supply unit 39 for generating a drive power supply for the elements is provided.

FIG. 4 shows a detailed block diagram of each volume control terminal device 41. As shown in the figure, the interface unit 40 of the volume control terminal device 41 also includes a CPU 4 inside.
Two. The CPU 42 is connected to the control data line 11 via the modulation / demodulation unit 43, that is, can communicate with the CPU 231 on the main device 23 side. The volume controller 4 is connected to the CPU 42.

The CPU 42 generates volume adjustment data indicating the current operated state of the volume controller 4 in accordance with the control data (the above-mentioned calling command) input from the control data line 11 via the modem 43. To the modulator / demodulator 4
3 to the control data line 11. It should be noted that the CPU 42 includes a sub control unit described in the claims,
The volume adjustment data corresponds to the sub-control data sending unit and the sending control unit, and the volume adjustment data corresponds to the sub-control data. And
The operation of the CPU 42 is controlled by a program stored in a storage unit 44 having, for example, a semiconductor memory configuration connected thereto. A power supply unit 45 similar to the power supply unit 39 of the speaker terminal device 31 is provided in the interface unit 40.

FIG. 5 shows a detailed block diagram of each sound source selection terminal device 51. As shown in the figure, the interface unit 50 of the sound source selection terminal device 51 has the same configuration as the interface unit 40 of the volume control terminal device 41, that is, the CPU 42 in the interface unit 40,
It has a CPU 52, a modulation / demodulation unit 53, a storage unit 54, and a power supply unit 55 similar to the modulation / demodulation unit 43, the storage unit 44, and the power supply unit 45, respectively. The sound source selector 5 is connected to the CPU 52.

That is, in the sound source selection terminal device 51, the CPU 52 operates the sound source selector 5 according to the control data (the above-mentioned calling command) input from the control data line 11 via the modem 53. The sound source selection data representing the situation is generated and input to the control data line 11 via the modem 53. Note that this CPU
52 also corresponds to the sub-control means, the sub-control data transmission means and the transmission control means described in the claims, similarly to the CPU 42 of the volume control terminal device 41. The sound source selection data referred to here corresponds to the sub-control data described in the claims, similarly to the volume adjustment data.

FIG. 6 shows a detailed block diagram of each display terminal device 61. As shown in the figure, the interface unit 60 of the display terminal device 61 is also connected to the volume control terminal device 41.
And each interface section 40 of the sound source selection terminal device 51
And 50, that is, the CPU 6 is internally provided.
2. It has a modulation / demodulation unit 63, a storage unit 64, and a power supply unit 65. The display 6 is connected to the CPU 62.

In the display terminal device 61, the CPU
In accordance with control data (the above-described display designation command) input from the control data line 11 via the modem 53, one of the character data and the graphic data included in the control data is It is displayed on the display 6. The CPU 62 of the display terminal device 61 corresponds to the second output control means described in the claims, and the display designation command corresponds to the output control command.

FIG. 7 shows a detailed block diagram of each monitor terminal device 71. As shown in FIG.
The first interface unit 70 has the same configuration as that of the above-described interface unit 30 of the speaker terminal device 31 except that the amplifier 34 is removed. That is, the CPU 32 in the interface unit 30 of the speaker terminal device 31,
The same CP as the modulation / demodulation unit 33, the D / A converter 35, the selection unit 36, the demodulation unit 37, the storage unit 38, and the power supply unit 39
U72, modem 73, D / A converter 74, selector 7
5, a demodulation unit 76, a storage unit 77, and a power supply unit 78. The monitor television 7 is connected to the D / A converter 74.

That is, the CPU 72 controls the control data line 1
1 in accordance with the control data (the above-described video selection command) input via the modem 73.
From the audio data and the playback video data input to the selection unit 75 via the demodulation unit 76 from the control unit 75. Then, the reproduced video data selected by the selection unit 75 is supplied to the monitor television 7 via the D / A converter 74. However, the demodulation unit 7 is transmitted from the downlink data line
Since each piece of the playback video data input to the selection unit 75 via the compression unit 6 is compressed, the selection unit 75 also has a function of expanding the compressed playback video data.

Further, the selection unit 75 has a function of adjusting the brightness and contrast of the screen of the monitor television 7 or performing a predetermined filtering process on the reproduced video data under the control of the CPU 72. are doing.
To achieve this, the CPU 72 controls the selection unit 75 according to the control data (screen adjustment command). The selection unit 75 here also corresponds to the broadcast data selection unit and the broadcast data processing unit described in the claims, similarly to the selection unit 36 in the speaker terminal device 31 described above. Corresponds to control means. The video selection command corresponds to a broadcast data selection command described in the claims, and the screen adjustment command corresponds to a broadcast data processing command.

FIG. 8 shows a detailed block diagram of each monitoring camera terminal device 81. As shown in the figure, the interface unit 80 of the surveillance camera terminal device 81 has a CPU 82 inside similarly to the other interface units 30 to 70, and the CPU 82 It is connected to the control data line 11. And
The surveillance camera 8 has an A / D
It is connected to the upstream data line 13 via a converter 84, a processing unit 85, and a modulation unit 86, and the processing unit 85 is configured to be controlled by the CPU 82.

That is, the CPU 82 controls the control data line 1
In accordance with the control data (the above-described camera selection command) input from 1 through the modem unit 83, the monitoring data captured by the monitoring camera 8 (strictly speaking, the video signal obtained by monitoring and collecting sound by the monitoring camera 8 and The processing unit 8 outputs the video and audio data obtained by digitizing the audio signal by the A / D converter 84 to the upstream data line 13 via the modulation unit 86.
5 is controlled. Note that the processing unit 85 is configured to compress the monitoring data and then input the monitoring data to the upstream data line 13 via the modulation unit 86. Processing unit 8
Reference numeral 5 also has a function of obtaining a function substantially equivalent to adjusting the sensitivity and aperture of the monitoring camera 8 by performing a predetermined filtering process on the monitoring data under the control of the CPU 82. To realize this, CP
U82 controls the processing unit 85 according to the monitoring data processing command included in the control data.

The operation of the CPU 82 is controlled by a program stored in a storage unit 87 having, for example, a semiconductor memory configuration connected thereto. And this C
The PU 82 corresponds to the detection control means described in the claims, and the processing unit 85 corresponds to the detection data sending means and the detection data processing means described in the claims. Further, the camera selection command corresponds to a detection control command described in the claims, and the monitoring data processing command corresponds to a detection data processing command.

Further, each of the terminal devices 31 to 81 has a C
The PUs 32 to 82 are respectively connected to the terminal devices 31 to 81.
Of the terminal devices 31 to 81, or the operation status (controlled state) of each of the terminal devices 31 to 81. And
The inspection data is input to the control data line 11 according to the above-described control data. Each of the CPUs 32
Inspection means according to the claims,
It corresponds to the test data sending means and the test control means.

According to the broadcasting device configured as described above, first, each microphone 21
The sound data obtained by digitizing each sound signal output from the performance device 22 by the A / D converters 239 and 240 are input to the information exchange unit 236. Further, the information exchange unit 236 sends the reproduced video signals output from the video device 24 and the video / audio recording / reproducing device 25 to the A / D converter 241 and the A / D / D / A, respectively.
Reproduced video data digitized by the converter 243 and further compressed by the data compression unit 242 and the data compression / decompression unit 244 is also input.

The information exchanging section 236 time-division multiplexes the audio data and the reproduced video data input thereto, for example, as shown in FIG. That is, the information exchange unit 236
Is the subframe 1 after the data for synchronization (synchronization section).
As S to S, the above-described audio data and the reproduced video data are added in time series, and finally, a check bit for detecting a transmission error is added. The data composed of these combinations is regarded as one frame, and
To enter. The CPU 231 controls which of the above-described sub-frames 1 to S is to be assigned each of the audio data and each of the reproduced video data. The data amount of each of the subframes 1 to S is, for example, about 16 bits, and the number of subframes, that is, the value of S is, for example, S = 16 to 24.

The modulator 237 encodes (modulates) the input data into, for example, a generally known differential bi-phase code, and converts the data into the downlink data line 12 via the power superimposing unit 28. To enter. The signal level of the data transmitted via the downlink data line 12 is based on, for example, the generally known RS-485 standard.

As described above, when data is serially transmitted as shown in FIG. 9 using the downstream data line 12, the C of the main unit 2 (main device 23) is
PU 231 and each CPU 3 on each of the terminal devices 31 to 81
Data transmission / reception as shown in FIG. 10A is performed between the control data lines 2 to 82 via the control data line 11. The data transmitted via the control data line 11 is, for example, a generally known FSK (Frequequent
ncy Shift Keying), and the signal level is based on the above and the RS-485 standard. Here, it is assumed that the number of each of the terminal devices 31 to 81 connected to the broadcast transmission path 1 is M in total, and each of the terminal devices 31 to 81 is close to, for example, the device main body 2. It is assumed that terminal numbers “1” to “M” are assigned in order from the terminal.

As shown in FIG. 10A, the main unit 23
(Specifically, the CPU 231 in the main device 23) first transmits a status request command to the terminal device with the terminal number "1" (specifically, the CPU in this terminal device). In response to this, the terminal device having the terminal number “1” inspects its own state and transmits the inspection data to the main device 23 side.
At this time, if there is data to be transmitted to the terminal device, the data is also transmitted to the main device 23 together. This data is, for example, when the terminal device is the volume control terminal device 41 or the sound source selection terminal device 51, the above-described volume control data or the sound source Refers to selected data. Therefore, the status request command sent from the main device 23 to the terminal device at this time corresponds to the above-described calling command. Then, in the terminal device that has received the status request command, the status request command corresponds to the inspection control command described in the claims.

When the main unit 23 finishes receiving the response data from the terminal number "1", the main unit 23 next issues a status request command to the terminal number "2". Send. In response to this, the terminal device having the terminal number “2” transmits inspection data obtained by inspecting its own state to the main device 23 side in the same manner as described above. From now on,
The main device 23 makes a status request similar to the above for all terminal devices in the order of the terminal numbers, and in response to this status request,
Each terminal device makes a response similar to the above, that is, performs data transmission based on a generally known polling selection method.

As shown in FIG. 10A, a predetermined time T (for example, T = 1 second) elapses after a status request is made from the main device 23 side, as in the terminal device of terminal number "3" in FIG. However, if there is no response from the terminal device,
The main device 23 considers that the terminal device having the terminal number “3” is broken and, for example,
Is stored in the storage unit 235. Then, the status request is made to the next terminal device, that is, the terminal device having the terminal number “4”.

Then, the main unit 23 receives the response data from the terminal number "M" and confirms the state of all the terminal units, and then sends the response data to each terminal unit. , An instruction for controlling each of them individually, that is, the above-described control data is transmitted.

That is, the main unit 23 selects a sound source selection for each of the speaker terminal devices 31, 31,..., Which of the subframes 1 to S of the data shown in FIG. Command and each speaker 3, 3, ...
A volume adjustment command and a sound quality adjustment command for respectively adjusting the volume and sound quality of the sound to be output from are transmitted as the control data. Thus, each speaker 3, 3,...
Then, the sound of the sound source selected by the sound source selection command is output at a volume and sound quality based on the sound volume adjustment command and the sound quality adjustment command. Note that a certain speaker terminal device 31
When a sound source selection command to select none of the subframes 1 to S is given,
Nothing is output from the speaker 3 of the speaker terminal device 31, that is, the output is turned off.

Then, for each display terminal device 61,
Character data and graphic data to be displayed on each display 6;
A display designation command for designating which character or graphic data is to be displayed on each display 6 is transmitted as the control data. Thereby, each display 6
Displays the character or graphic designated by the display designation command. If a display designation command not to display any character data and graphic data is given to a certain display 61, the display terminal device 6
Nothing is displayed on the first display unit 6, that is, the output is turned off.

Further, for each monitor terminal device 71,
A video selection command for specifying which of the subframes 1 to S of the data shown in FIG. 9 is to be selected and a screen adjustment command for adjusting the display screen of each monitor television 7 are transmitted as the control data. I do. As a result, the reproduced video selected by the video selection command is displayed on each monitor television 7 in an adjustment condition (for example, brightness or contrast) based on the screen adjustment command. In addition,
When a video selection command not to select any of the subframes 1 to S is given to a certain monitor terminal device 71, the monitor television 7 of the monitor terminal device 71 Is not displayed, that is, the output is turned off.

Further, with respect to each of the monitoring camera terminal devices 81, a camera selection command for designating which of the monitoring data captured by the monitoring camera 8 is to be taken into the main device 23 is provided.
It is transmitted as the control data. The surveillance camera terminal device 81 specified by the camera selection command transmits the monitoring data captured by the surveillance camera 8 to the main device 23 via the upstream data line 13. Then, in the main device 23, the information exchange unit 236 receives the monitoring data via the power superimposing unit 28 and the demodulation unit 238, and receives the received monitoring data under the control of the CPU 231. 25, a speaker 26 and a monitor television 27. Therefore, the video and audio captured by the monitoring camera 8 can be recorded by the recording / reproducing device 25 or output to the speaker 26 and the monitor television 27.

Here, FIG. 11 shows a format of the monitoring data sent from the monitoring camera terminal device 81 to the main device 23 side. As shown in the figure, the monitoring data includes a synchronization unit, an address unit, a control unit, an information unit, and a check bit. Among them, the synchronization unit is data for synchronizing the monitoring camera terminal device 81 side and the main device 23 side, and the address unit is at least data representing the address of the transmission source, for example, the terminal number described above. Further, the control unit indicates that the data to be transmitted is monitoring data, or indicates whether the monitoring data is video-only data, includes sound collection data, or the like. The information part is the main part of the monitoring data, and the check bit is
It is added for transmission error detection.

When the main device 23 sends a command not to select any surveillance camera 8 as the camera selection command, the main device 23 notifies the surveillance of any surveillance camera 8 No data is captured. Further, if a command for performing a predetermined filtering process on the monitoring data captured by the monitoring camera 8, ie, a monitoring data processing command, is given as the control data, for example,
An effect substantially equivalent to adjusting the sensitivity or the aperture of itself can be obtained.

When transmitting the control data, the main unit 23 adds the volume adjustment data and the sound source selection data received from the respective volume adjustment terminal devices 41 and the respective sound source selection terminal devices 51 at the time of the status response to the control data. To reflect.
That is, the CPU 231 in the main device 23 analyzes the contents of the received volume adjustment data and sound source selection data. Then, according to the analysis result, predetermined speakers 3, 3,.
..., for example, each speaker 3 in the system 1 in FIG.
, And a sound source selection command to change the sound source of each of the speakers 3, 3,... In the system 2 are generated. Send as As a result, each speaker 3 in the system 1
Are adjusted, and the sound sources of the speakers 3, 3,... In the system 2 are changed.

When transmission of the control data to all the terminal devices is completed, the main device 23 makes the above-mentioned status request again. Thereafter, the main device 23 checks the status of each terminal device and transmits control data to each terminal device,
Continue and repeat alternately.

The format of each data transmitted via the control data line 11 is shown in FIG. As shown in the figure, each data is composed of a start text (STX) part, an address part, an instruction part, a modification part, a check bit and an end text (ETX) part.
Among them, the start text portion indicates a start portion of the data. The address part indicates the addresses of the source and destination of the data. For each terminal device, the terminal numbers “1” to “M” described above correspond to this. The command section indicates the type of data such as whether the data is a status request command, a status response, or control data. The decoration unit represents the details of the command unit. For example, the additional data (that is, the volume adjustment data and the sound source selection data) at the time of the status response and the detailed contents of the control data are described below.
This is the case. The amount of information (the number of bits) of the decoration unit changes depending on the type and content of data. The check bit and the end text part indicate an error detection part and an end part of the data, respectively.

The CPU 231 of the main device 23 operates according to, for example, a flowchart shown in FIG. 12 in order to realize data transmission and reception as shown in FIG. 10A with each terminal device.

As shown in the figure, the CPU 231 first sets the index m representing the terminal number to m = 1 in order to make a status request to the terminal device of the terminal number "1" (step S2). . Then, after resetting the timer for counting the time t (t = 0), the counting of the time t is started (step S4). Then, immediately, the status request command is transmitted to the terminal device m, that is, the terminal device having the terminal number "1" (step S6).

The CPU 231 determines whether or not the status response to the status request is returned from the terminal device having the terminal number “1” before the count time t of the timer reaches the above-mentioned predetermined time T. Is confirmed (steps S8 and S10), and if a status response is returned (YES in step S8), the contents of the response are stored in the storage unit 235 (step S12). Further, it is confirmed whether or not any data, for example, the above-mentioned volume adjustment data or sound source selection data is added to the state response (step S14). If it is added (YES in step S14), The data is stored in the storage unit 235 (step S16), and the process proceeds to the next step S20. On the other hand, if there is no additional data in step S14 (NO), the process skips step S16 and proceeds to step S20.

Even if the count time t of the timer reaches the predetermined time T, if there is no status response from the terminal device of terminal number "1" (YE in step S10)
In the case of S), the CPU 231 determines that the terminal device with the terminal number “1” is out of order, stores the fact (step S18), and proceeds to step S20. Then, the CPU 231 executes the above-described steps S4 to S4.
Each of the operations 18 is sequentially repeated in the order of the terminal number m (step S20 and step S22).

After executing the operations of steps S4 to S18 for all terminal devices (YES in step S20), CPU 231 transmits control data (command) to each terminal device. In addition,
At this time, the CPU 231 reflects the contents of the data (that is, the volume adjustment data and the sound source selection data) stored in step S16 on the control data.

On the other hand, each CP on each of the terminal devices 31 to 81 side
U32 to 82 operate according to the flowchart shown in FIG. 13, for example.

As shown in FIG.
First, it is determined whether a status request command has been sent from the main device 23 (step S102). Then, when the status request command is sent (YES in step S102), it is determined whether or not it is a request to itself (step S104), and when it is a request to self (step S104). In the case of YES), a status response is made (step S106). Then, following this status response, it is confirmed whether or not there is data to be transmitted to the main device 23 (that is, volume adjustment data or sound source selection data) (step S108). If there is data to be transmitted (step S108) (In the case of YES in S108)
The data is transmitted (step S110), and the process proceeds to the next step S112. If any of the above steps S102, S104, and S108 is NO, the process directly proceeds to step S112.

Step S112 is performed in each of the CPUs 32 to 8
Step 2 is a step of checking whether control data (command) has been received from the main device 23. CPUs 32 to 82
Receives the control data (in the case of YES in step S112), confirms whether the control data is a command for itself (step S114). Then, when the control data is a command for itself (step S1)
In the case of YES at 14), according to the instruction,
Update each setting. Note that the above step S11
In the case of NO in any of Step 2 and Step S114, the process exits the flowchart (routine) of FIG.

As described above, according to the present embodiment, all the terminal devices 31 to 81 including the speaker terminal devices 31, 31,... And have a bus connection. Therefore, as compared with the above-described conventional technology in which a plurality of speaker lines 101, 101,.
The wiring of the entire broadcasting device can be greatly simplified.

Then, each terminal device 31 is
To 81 can be individually controlled, so that an extremely flexible broadcasting device can be realized. For example, when changing the combination of the terminal devices 31 to 81 in each of the systems 1 to N, the program of the CPU 231 in the main device 23 (that is, the program stored in the storage unit 235)
Is different from the prior art described above,
There is no need to perform wiring work for the broadcast transmission path 1. Of course, according to the present embodiment, the same function as that of speaker selector 108 in the above-described conventional technique (FIG. 19) can be easily realized.

Furthermore, since the control by the volume controller 4 and the sound source selector 5 provided on each of the output systems 1 to N is also reflected, for example, the volume is individually adjusted on each of the output systems 1 to N. Or a request to select a sound source.

In this embodiment, in addition to the speakers 3, 3,..., A display 6, a monitor television 7, and a surveillance camera 8 are provided to handle characters, graphics, images, etc. All data is transmitted via the broadcast transmission line 1. Therefore, unlike a conventional broadcasting device that only loudspeaks sounds, a so-called comprehensive information broadcasting system in which various information is comprehensively handled by one system can be realized. Therefore, application to various broadcasting fields which cannot be handled by the conventional broadcasting device can be expected.

A control data line 11 for transmitting control data such as control data and a main unit 23
(Information) sent from the side to each of the terminal devices 31 to 81
A data line 12 for transmitting data (information) from the terminal devices 31 to 81 (strictly speaking, the monitoring camera terminal device 81) to the main device 23 side. Are provided separately. Therefore, the operation of outputting sound from each speaker 3, 3,..., The operation of displaying information such as characters, graphics, or images on each display 6 and each monitor television 7 and the operation of monitoring camera 8 The operation of transmitting the captured video and audio to the main device 23 and the operation of controlling each of the terminal devices 31 to 81 can be simultaneously executed. Therefore, for example, even if the sound source of a certain speaker 3 is changed during broadcasting, the output sound of the other speakers 3, 3,..., The display of each display 6 and each monitor television 7, and the monitoring Video and audio captured by the camera are not cut off in the middle, that is, real-time (real-time) performance as a broadcast device can be secured.

Further, since character data and graphic data handled by the display terminal device 61 have a smaller data capacity than audio data and reproduced video data handled by other devices, they are separately provided from such large data. , As control data via the control data line 11. Therefore, the burden on the downstream data line 12 can be reduced as compared with a case where, for example, character data and graphic data are transmitted along with the audio data and the reproduced video data via the downstream data line 12.

Further, on the main unit 23 side, it is possible to confirm whether there is any abnormality in each of the terminal units 31 to 81, or to confirm the controlled state of each of the terminal units 31 to 81. Thus, on the main device 23 side, each terminal device 3
Since the operation statuses 1 to 81 can be confirmed, a highly reliable system can be realized.

In this embodiment, the volume controller 4 and the sound source selector 5 are connected to separate terminal devices 41, respectively.
And 51, but may be combined into one as shown in FIG. 14, for example. Further, as shown in FIG. 15, the volume controller 4 and the sound source selector 5 are connected to the speaker terminal device 31.
(Specifically, the volume controller 4 and the sound source selector 5 may be connected to the CPU 32 in the speaker terminal device 31).

In the present embodiment, a volume control terminal device 41 and a sound source selection terminal each having the volume control device 4 and the sound source selector 5 correspond to the control terminal device described in the claims. The device 51 has been described as an example, but is not limited to this. For example, a terminal device for selecting a screen (channel) to be displayed on the display 6 or the monitor television 7 or changing the processing performed by the processing unit 85 in the surveillance camera terminal device 81 is changed to a terminal device for the control. It may be provided as a terminal device.

Further, as shown in FIG. 16, the speaker terminal device 31 and the monitoring camera terminal device 81 may be integrated into one. As in FIG. 16, for example, although not shown, the display terminal device 61 and the monitoring camera terminal device 81
May be combined into one, or a terminal device in which the monitor terminal device 71 and the monitoring camera terminal device 81 are combined into one may be provided. Although the configuration is complicated, the speaker terminal device 31 and the display terminal device 61 can be combined into one, or the speaker terminal device 31 and the monitor terminal device 71 can be combined.
May be realized as one terminal device.

The character data and graphic data to be displayed on the display 6 are transmitted via the control data line 11, but these character data and graphic data are also transmitted.
After sub-frames 1 to S shown in FIG. 9 are time-division multiplexed together with the above-described audio data and reproduced video data,
The transmission within the downlink data line 12 may be performed. In this case, the display terminal device 61 fetches the character data and the graphic data from the downstream data line 12, so that the configuration is the same as that of the monitor terminal device 71 in FIG. That is, as shown in FIG. 17, the CPU 72, the modem 73, and the D / A converter 7 in FIG.
4. Selector 75, demodulator 76, storage 77 and power supply 7
8 and a CPU 62a and a modem 63, respectively.
a, D / A converter 64a, selector 65a, demodulator 66
a, a storage section 67a and a power supply section 68a, and the display 6 is connected to the CPU 62a.

However, according to the configuration of FIG. 17, it goes without saying that the above-described character data and graphic data are transmitted via the downstream data line 12, thereby increasing the burden on the downstream data line 12. .

In the present embodiment, the monitoring data captured by any one of the monitoring cameras 8 is taken into the main unit 23, but the present invention is not limited to this. For example, the monitoring data captured by the plurality of monitoring cameras 8 is sequentially taken into the main device 23 side. An operation substantially equivalent to capturing captured video and audio simultaneously into the main device 23 can be realized.

A camera selection command for specifying which camera 8 of the monitoring cameras 8 should receive monitoring data into the main unit 23 is included in the control data as control data together with other control commands. The transmission is performed via the line 11, but is not limited to this. For example, the camera selection command may be transmitted via the upstream data line 13 separately from other commands. In this case, it goes without saying that the upstream data line 13 is a bidirectional transmission line.

Furthermore, the processing unit 85 in the surveillance camera terminal device 81 compresses the surveillance data captured by the surveillance camera 8 or performs a filtering process, but the present invention is not limited to this. For example, the processing unit 85
Thus, illegal intruder detection (moving object detection) or fire detection may be performed based on the monitoring data. When performing these detections, the monitoring data itself is not sent to the main device 23 side. For example, when an intruder or a fire is detected, only the detection result (that is, an alarm signal) is transmitted to the upstream data. The information may be transmitted to the main device 23 via the line 13. In this case, information indicating that the illegal intruder or fire has been detected is transmitted to, for example, each of the speaker terminal devices 31 and 3.
1,... (Each speaker 3, 3,...) To output as an alarm, or each display terminal device 61 (display 6)
Or on each monitor terminal device 71 (monitor television 7).

In the present embodiment, the surveillance camera terminal device 81 is provided as a device corresponding to the environment detection terminal device described in the claims. However, the present invention is not limited to this. For example, a terminal device 91 provided with the sound collecting microphone 9 as shown in FIG. 18 may be provided, so that a sound, for example, a noise in a space where the terminal device 91 is installed may be detected. That is, the output signal of the sound pickup microphone 9 is digitized by the A / D converter 92, and is digitized by the CPU.
The noise level is detected by analyzing at 93. Then, the detected data is transmitted to the apparatus main body 2 (main apparatus 2) via the modem 94 and the control data line 11.
3) Send to the side. This allows the apparatus main body 1 to know the noise level in the space, which is a place away from the apparatus main body 1.

Note that the operation of the CPU 93 is performed in the storage section 9.
5 is controlled by a program stored therein. Also,
The driving power supply for each circuit in the interface unit 90 including the A / D converter 92, the CPU 93, the modem unit 94, and the storage unit 95 is generated (extracted) by the power supply unit 96.

Further, C on the side of the apparatus body 2 (in the main apparatus 23)
By the PU 231, for example, the speaker terminal devices 31, 31,... (Speakers 3, 3,...) Near the terminal device 91 according to the detection data (noise level).
Each of these terminal devices 31, 31,
May be updated.
Thereby, automatic volume adjustment of the speaker according to the noise environment in the space can be realized.

In this embodiment, each of the terminal devices 31 to 81 includes a speaker 3, a volume controller 4, a sound source selector 5, a display 6, a monitor television 7, and a monitoring camera 8, respectively. As described in the example, each terminal device 3
The configurations 1 to 81 are not limited to these. For example, in the case of constructing a system for broadcasting only sound information as in the above-described related art, only the speaker terminal devices 31, 31,. Of course,
On the contrary, the speaker terminal devices 31, 31,...
The present technology can also be applied to a system that is not provided with, for example, a system that broadcasts only visual information such as characters, figures, and videos.

Further, a bell, buzzer, siren, or L
A terminal device provided with an alarm device such as an ED or a red lamp may be provided. In this case, for example, if the above-mentioned alarm device is provided instead of the display device 6 of the display terminal device 61, a terminal device equipped with this alarm device can be realized.

Also, the power superimposing section 28 is provided on the apparatus main body 2 side, and the driving power is supplied from the power superimposing section 28 to each of the terminal devices 31 to 81 via the broadcast transmission line 1. However, it is not limited to this. For example, each of the terminal devices 31 to 81 may be configured to individually receive a driving power from the outside. In this case, needless to say, the power superimposing unit 28 becomes unnecessary.

FIG. 10A shows the procedure (protocol) of data transmission via the transmission data line 11, and FIG. 10 (A) shows the format of the data transmitted on each of the data lines 11, 12 and 13. b), shown in FIGS. 9 and 11, but is not limited to this. That is, if the same operation as that of the present embodiment can be achieved, FIG.
Alternatively, data transmission may be performed based on a protocol other than the above, or each data may be formed based on a format other than those shown in FIGS. The main device 2
The program (flowchart) for controlling the CPU 231 on the third side and the CPUs 32 to 82 on the side of the terminal devices 31 to 81 will also be described with reference to FIGS. Not exclusively.

Further, three lines, a control data line 11, a down data line 12, and an up data line 13, are provided as the broadcast transmission line 1, but the present invention is not limited to this. For example, when the monitoring camera 8 is used infrequently, the function of the upstream data line 13 (function of transmitting monitoring data) is shared by the control data line 11 without providing the upstream data line 13. The transmission line 1 for broadcasting may be constituted by two lines of the control data line 11 and the downstream data line 13. In addition, each line 1
All data may be transmitted by only one (set) line without providing 1, 12, and 13 separately. However, when the number of lines constituting the broadcast transmission path 1 is reduced in this way, it goes without saying that the real-time property of the broadcasting device cannot be ensured.

Note that the CPU 231 in the main device 23 in the present embodiment corresponds to the main control means, control data receiving means, and inspection data receiving means described in the claims. The information exchange unit 236 corresponds to the main sending unit and the detection data receiving unit described in the claims.

[0136]

As described above, claim 1 of the present invention is as follows.
According to the digital broadcast device of the invention described in (1), each first broadcast terminal device including a speaker, a display device, and the like is connected to one (set) of broadcast transmission paths. Therefore, the speaker lines 101, 101,.
, And each of these speaker lines 101, 101,...
As compared with the above-mentioned conventional broadcasting apparatus in which the star wiring is used, the wiring of the entire apparatus can be greatly simplified.

Then, under the control of the main unit, each of the first
Source of information for each broadcast terminal device,
For example, since the sound source of a speaker, the channel of a display device, and the like can be individually selected, the degree of freedom in designing a broadcast device is improved. Therefore, for example, when distributing each first broadcast terminal device to a plurality of output systems, the distribution can be arbitrarily performed at any time. Also, unlike the prior art described above, when changing the combination of the first broadcast terminal devices once distributed,
This change can be easily realized without wiring work for the broadcast transmission path.

Furthermore, the broadcasting apparatus according to the first aspect of the present invention is not limited to the broadcasting apparatus's original function of broadcasting sound information, but also includes sound information such as text and graphics, and visual information such as video. It has the function of broadcasting other information. Therefore, there is an effect that the invention according to claim 1 can be applied to a broadcasting field which cannot be dealt with by a conventional broadcasting device which only broadcasts sound information.

According to the digital broadcasting apparatus of the second aspect, each of the first broadcasting terminal apparatuses has a speaker as the first information output means, and the sound data to be output from the speaker is: The data is transmitted from the main device side to each first broadcast terminal device via a broadcast transmission path. Therefore, at least in the broadcasting field in which sound is amplified, the same effects as those of the first aspect of the invention can be obtained.

According to the digital broadcasting apparatus of the third aspect of the invention, each first broadcasting terminal device has a display device such as a CRT display device as the first information output means. Is transmitted from the main device to each first broadcast terminal device via the broadcast transmission path. Therefore, in the field of broadcasting at least visual information such as characters, graphics, and videos, the same effects as those of the first aspect of the present invention can be obtained.

A digital broadcasting apparatus according to a fourth aspect of the present invention includes both the components of the second aspect of the invention and the third aspect of the invention. Therefore, in the broadcasting field of broadcasting information such as sound and visual information such as characters, figures, and images, the same effects as those of the first aspect of the invention can be obtained.

According to the digital broadcasting apparatus of the present invention, when the first broadcasting terminal apparatus includes, for example, speakers as the first information output means, the sound output from each of these speakers is output. The volume and sound quality can be individually adjusted on the main device side. Further, when the first broadcast terminal device includes, for example, a display device as the first information output means, the main device controls the characters and / or graphics to be displayed on each of the display devices to perform a modification process. Alternatively, image processing can be performed on the video. That is, there is an effect that information output from each first broadcast terminal device can be individually processed by remote control from the main device side.

According to the digital broadcasting apparatus of the present invention, the first broadcast data for transmitting the first broadcast data is transmitted.
And a second transmission line for transmitting control main control data are separately provided. Therefore, the operation of outputting information based on the first broadcast data from each first broadcast terminal device and the operation of controlling each first broadcast terminal device can be performed simultaneously, that is, the real-time performance of the broadcast device. There is an effect that can be secured.

According to the digital broadcasting apparatus of the present invention, the second data having a smaller data capacity than the first broadcasting data is set as main control data separately from the first broadcasting data. The data is transmitted to the second broadcast terminal device. Therefore, for example, as in the invention described in claim 6, a first transmission line for transmitting the first broadcast data and a second transmission line for transmitting the main control data are respectively provided. When provided separately, the load on the first transmission line can be reduced, and more information can be transmitted via the first transmission line. If, for example, an alarm device is used as the second broadcast terminal device, the application field of this broadcast device is further expanded.

According to the digital broadcasting apparatus of the present invention, the detection data obtained by detecting the surrounding environment by the environment detecting terminal device is transmitted to the main device via the broadcasting transmission path. . Therefore, as an environment detection terminal device,
For example, if a camera having a surveillance camera is used, an image captured by the surveillance camera can be taken into the main device, that is, a surveillance function can be added. Therefore, there is an effect that the application field of this broadcasting device is further expanded.

According to the digital broadcasting apparatus of the ninth aspect of the present invention, the environment detection terminal device is provided with a detection data processing means for processing the detection data. That is,
Before the detection data is sent to the main device, so-called pre-processing is performed in each environment detection terminal device. Therefore, when the detection data is processed on the main device, the burden can be reduced. If data compression processing is performed as the preprocessing, for example, data transmission via a broadcast transmission path can be performed efficiently.

According to the digital broadcasting apparatus of the tenth aspect, each terminal device can be controlled in accordance with the detection data obtained by the environment detecting terminal device. Therefore, for example, it is particularly effective when it is desired to control a predetermined terminal device according to the environment around the installation location of the environment detection terminal device, or when it is desired to output information corresponding to the detection data from the predetermined terminal device. It is.

According to the digital broadcasting apparatus of the present invention, at least so-called upstream detection data sent from each environment detecting terminal device to the main device is transmitted from a line for transmitting other data, that is, from the main device side. The data is transmitted via a third transmission line different from a transmission line for so-called downstream data sent to each terminal device. Therefore, at least the detected data can be continuously transmitted to the main apparatus side at any time regardless of the exchange of other data, that is, real-time performance can be secured.

According to the digital broadcasting apparatus of the twelfth aspect, a predetermined terminal device can be controlled by the control terminal device connected to the broadcasting transmission line by bus. Therefore, it is particularly effective when, for example, it is desired to control the predetermined terminal device in a place away from the main device or in the vicinity of the predetermined terminal device.

According to the digital broadcasting apparatus of the present invention, the inspection data obtained by inspecting the operation status of each terminal device and whether or not each terminal device has an abnormal portion is transmitted to the broadcast transmission path. Is sent to the main device side via. Therefore, there is an effect that the state of each terminal device can be grasped on the main device side, and a highly reliable system can be constructed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration block diagram illustrating an embodiment of a digital broadcast device according to the present invention.

FIG. 2 is a block diagram illustrating a detailed configuration of a device main body according to the embodiment.

FIG. 3 is a block diagram illustrating a detailed configuration of a speaker terminal device according to the embodiment.

FIG. 4 is a block diagram illustrating a detailed configuration of a volume control terminal device according to the embodiment.

FIG. 5 is a block diagram illustrating a detailed configuration of a sound source selection terminal device according to the embodiment.

FIG. 6 is a block diagram illustrating a detailed configuration of a display terminal device according to the embodiment.

FIG. 7 is a block diagram illustrating a detailed configuration of a monitor terminal device according to the embodiment.

FIG. 8 is a block diagram illustrating a detailed configuration of a monitoring camera terminal device according to the embodiment.

FIG. 9 is a format diagram of data transmitted through a downlink data line in the embodiment.

FIG. 10 is a diagram showing details of data transmitted via a control data line in the embodiment, where (a) is a protocol diagram of data communication performed between a main device and each terminal device, b) is a format diagram of each data.

FIG. 11 is a format diagram of data transmitted through an uplink data line in the embodiment.

FIG. 12 is a flowchart illustrating an operation of a CPU of the main device according to the embodiment.

FIG. 13 is a CPU on each terminal device side in the embodiment.
6 is a flowchart showing the operation of FIG.

14 is a block diagram showing an example of a terminal device in which the volume control terminal device shown in FIG. 4 and the sound source selection terminal device shown in FIG. 5 are combined into one.

FIG. 15 is a block diagram showing an example in which a volume controller and a sound source selector are added to the speaker terminal device shown in FIG. 3;

16 is a block diagram showing an example of a terminal device in which the speaker terminal device shown in FIG. 3 and the monitoring camera terminal device shown in FIG. 8 are combined into one.

FIG. 17 is a block diagram illustrating another example of the display terminal device according to the present embodiment.

FIG. 18 is a block diagram illustrating a detailed configuration of a terminal device including a sound collecting microphone according to the embodiment.

FIG. 19 is a schematic block diagram illustrating an example of a conventional broadcasting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Broadcasting transmission line 2 Device main body 3 Speaker 23 Main device 30 Interface unit 31 Speaker terminal device

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[Procedure amendment]

[Submission date] July 19, 1999 (1999.7.1)
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (13)

[Claims] 1. A broadcasting system comprising: a main device; a broadcasting transmission line having a digital transmission line configuration connected to the main device; and a plurality of first broadcasting terminal devices bus-connected to the broadcasting transmission line. A main control means for generating main control data for individually controlling each of the first broadcast terminal devices and inputting the main control data to the broadcast transmission path, and one or more digitized ones; Main transmission means for receiving the first broadcast data, multiplexing each of the first broadcast data, and inputting the multiplexed first broadcast data to the broadcast transmission path. First output control means for taking in the main control data from the transmission path and generating a broadcast data selection command based on the main control data; and taking in the first broadcast data from the broadcast transmission path and First broadcast day Broadcast data selection means for selecting a broadcast data selection command corresponding to the broadcast data selection command, and first broadcast data selected and obtained by the broadcast data selection means are input and based on the input first broadcast data. A digital broadcast device comprising: first information output means for outputting information. 2. A part or all of each of the first broadcast data is sound data obtained by digitizing sound information, and a part or all of each of the first broadcast terminal devices is 2. The digital broadcast apparatus according to claim 1, further comprising: speaker means for converting the first broadcast data input thereto into sound and outputting the sound as first information output means. 3. A part or all of each of the first broadcast data is display data obtained by digitizing visual information, and a part or all of each of the first broadcast terminal devices is: 2. The digital broadcast apparatus according to claim 1, further comprising a display unit configured to convert the first broadcast data input thereto into visual information and output the visual information, as the first information output unit. 4. A part of each of the first broadcast data is sound data obtained by digitizing sound information, and a part or all of the first broadcast data other than the sound data is visual. Display data obtained by digitizing important information, wherein a part or all of each of the first broadcast terminal devices serves as the first information output means and converts the first broadcast data input thereto into 2. The digital broadcasting apparatus according to claim 1, further comprising at least one of speaker means for converting the first broadcast data into sound and outputting the same, and display means for converting the first broadcast data into visual information and outputting the same. 5. In some or all of the first broadcast terminal devices, the first output control means includes:
It is configured to generate a broadcast data processing command based on the main control data taken from the broadcast transmission path,
Broadcast data processing means for processing the first broadcast data selected by the broadcast data selecting means in accordance with the broadcast data processing command is provided, and the first broadcast data processed by the broadcast data processing means is processed by the broadcast data processing means. 5. An apparatus according to claim 1, wherein said information output means is configured to input the information to said information output means.
2. The digital broadcasting device according to claim 1. 6. The first transmission line for transmitting the first broadcast data among the data transmitted through the broadcast transmission line, the first transmission line comprising: And a second transmission line for transmitting data other than data.
2. The digital broadcasting device according to claim 1. 7. One or more second broadcast terminal devices are connected to the broadcast transmission path by a bus, and the main control means of the main device comprises:
Each of the second broadcast terminal devices is also individually controlled, and data including second broadcast data corresponding to each of the second broadcast terminal devices is generated and input to the broadcast transmission path. A second output control means configured to receive the main control data from the broadcast transmission path and generate an output control command based on the main control data. 7. The digital information processing apparatus according to claim 1, further comprising: a second information output unit that outputs information based on the corresponding second broadcast data in accordance with the output control command. Broadcast equipment. 8. One or more environment detection terminal devices are bus-connected to the broadcast transmission path, and main control means of the main device individually controls each of the environment detection terminal devices as the main control data. To be input to the broadcast transmission path, and each of the environment detecting terminal devices detects an environment by detecting the surrounding environment. Detection data sending means for inputting the obtained detection data to the broadcast transmission path in accordance with the detection control instruction; and obtaining the main control data from the broadcast transmission path and generating the detection control instruction based on the main control data. And a detection control means for receiving the detection data from the broadcast transmission line in the main device.
The digital broadcasting device according to 3, 4, 5, 6, or 7. 9. A state in which the detection control means also generates a detection data processing command based on the main control data fetched from the broadcast transmission line in a part or all of the environment detection terminal devices. Detection data processing means for processing the detection data obtained by the detection by the environment detection means in accordance with the detection data processing command, and transmitting the detection data processed by the detection data processing means to the detection data sending means. 9. The digital broadcast apparatus according to claim 8, wherein the digital broadcast apparatus is configured to input to the broadcast transmission path. 10. The apparatus according to claim 8, wherein the main control means of the main device is configured to update the main control data based on the detection data received by the detection data receiving means. Digital broadcasting equipment. 11. The broadcast transmission path includes at least a third data for transmitting the data for controlling each of the environment detection terminal devices and the detection data alone among the detection data only or the main control data. The transmission line is provided separately from the transmission line for transmitting data other than the detection data, or the main control data for controlling each of the environment detection terminal devices and the data other than the detection data. The digital broadcasting device according to claim 8, 9, or 10. 12. One or more control terminal devices are bus-connected to the broadcast transmission path, and the main control means of the main device individually controls each of the control terminal devices as the main control data. For controlling the main unit according to a terminal control command given from the outside, wherein each of the control terminal devices is configured to input the data to the broadcast transmission line. Sub-control means for generating data, sub-control data sending means for inputting the sub-control data to the broadcast transmission path according to a call command, and taking in the main control data from the broadcast transmission path to the main control data Transmission control means for generating the call instruction based on the control data receiving means for receiving the sub-control data from the broadcast transmission line, 8. The apparatus according to claim 1, wherein said main control means updates said main control data based on sub-control data received by said control data receiving means. , 8, 9,
12. The digital broadcasting device according to 10 or 11. 13. A part or all of each of the terminal devices,
Inspection means for inspecting its own state, inspection data transmitting means for inputting inspection data obtained by the inspection means to the broadcast transmission line in accordance with an inspection control command, and Inspection control means for taking in control data and generating the inspection control command based on the main control data, wherein the main device is provided with inspection data receiving means for taking in the inspection data from the broadcast transmission line. Claims 1, 2,
The digital broadcasting device according to 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12.