JPS62164336A - Subscriber response data collecting system in two way catv system - Google Patents

Abstract

PURPOSE:To prevent the disturbance of a terminal equipment identification and to miniaturize a terminal equipment by setting a terminal logical address with a central control equipment only and executing the unitary control of a terminal address. CONSTITUTION:In a central control equipment 1 having a computer system 11, the inherent physical address stored in the non-volatile memory of respective terminal equipment 2 is read, the logical address easily controlled is allocated, and in the terminal equipment, an inherent physical address and the allocated logical address are stored to the non-volatile memory. Thus, only by transmitting the logical address signal, the desired terminal equipment can be designated. From the central control equipment, the logical address signal to mask the lower-most digit is transmitted, the preparation of the data transmission is executed to the terminal equipment in which the higher order digit is the same, and thereafter, by transmitting the logical address signal of the lower-most digit only, the terminal device is successively designated and the memory data composed of the data, etc., inputted by a key pad are transmitted.

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention is applicable to two-way CArVh systems, two-way CATV crime prevention, disaster prevention, surveillance systems, etc., in which data input from the keypad of the terminal device being viewed is Join to collect into a central control unit? j I, i5? ! 4 data collection methods.

〈Conventional technology〉 Conventionally, "MBI" - Tasisdem has been used in i8! Juru central control 2II neck attachment and terminal control device 1. J3 and -1-1 pads are connected to multiple terminal devices on the right by a signal transmission path, and data can be transmitted from the central control unit and from each terminal device respectively. A CATV system is provided.

In such a two-way CΔTV system, the following method has been adopted in order to collect response data from each terminal device in the central control device.

That is, first, synchronization data, terminal address data, command data, J3 and BC are sent from the central controller to the terminal devices.
A data request signal consisting of C data is transmitted, and the terminal device that receives this data request signal first performs character output, voice output, etc. to arouse the human power of the data, and in response, the keypad is activated. Based on the data manually generated by In the 2II device, by decoding the data transmission signal, the address data of the terminal device and the arc entered manually using the keypad are collected. Then, by repeating the above process for each terminal device, it is possible to collect the data entered manually using the keypad for all terminal devices.The address data of the terminal device is It is set by a mechanical switch for each device.

<Problems to be Solved by the Invention> In the subscriber response data collection method described above, the management of the address of the terminal device is controlled by a mechanical software boot, and the management of the address of the terminal device is controlled by a central control system. In system a, since this is done by the memory within the computer system, there is a problem in that the identification of the terminal device may be confused. Furthermore, if the TV system becomes large-scale, the number of digits in the address of the terminal device will increase, and the mechanical switch will become larger, so there is a problem that the terminal device as a whole will become larger. Furthermore, since the address of the terminal device is set randomly, all digits of the terminal device's address data must be sent and received in order to identify the terminal device, and the time required to collect response data is required. There is also the problem that it becomes long.

<Object of the invention> This invention was made in view of the above problems,
The purpose of the present invention is to provide a subscriber response data collection method in a two-way CATV system that can prevent confusion in terminal device identification, increase the size of terminal devices, and shorten the time required for response data collection. There is.

<Means for Solving the Problems> In order to achieve the above object, the subscriber response data collection method of the present invention includes a central control device controlling a computer system, a terminal control device, and a terminal control device. J'3 is located in a two-way CATV system consisting of a plurality of terminal devices each having a control keypad, and a signal transmission path connecting the central control device 2'11 and each terminal device, 11 devices on the central side read the physical address of the terminal device? ! In addition to having the function of assigning a logical address that is easy to write, each terminal device has a unique physical address using a non-volatile memory, and a logical address assigned to the central control unit. The central control unit has the function of storing addresses, and transmits a logical address signal with the least significant digit masked from the central control unit. , then sequentially specify the terminal devices by transmitting the logical address signal of only the least significant digit,
This method is characterized in that the storage data is transmitted, and then the logical address of the upper digits is changed to prepare the corresponding terminal device for data transmission, J3, and the storage data transmission.

<Operation> With the subscriber response data collection method described above, the central control unit that controls the computer system reads out the unique physical address stored in the non-volatile memory of each terminal device and manages it. Divide the easy logical address of 4=J
t) In the terminal device, the above-mentioned unique physical address and the above-mentioned logical address divided by 1.1 are stored in a non-volatile memory. A desired device can be specified by simply transmitting an address signal. Then, the central controller transmits a logical address signal with the 1-lower digit masked to make the terminal devices with the same upper digit prepare for data transmission, and then transmits the logical address signal of only the lowest digit. By transmitting an address signal, it is possible to sequentially designate terminal devices to transmit stored data consisting of data input using a keypad.

By changing the logical address signal of the upper digit ((,
The C1 storage data can be transmitted by transmitting a logical address signal of only one.

<Example> Embodiments will be described in detail below with reference to the accompanying drawings showing examples.

FIG. 4 is a block diagram without showing the bidirectional CATV system, which includes a central control device (1), a terminal device (2),
It is composed of an F3 transmission line (3).

L central ffi++ (1) device (1) has one C (J
device (12) and CF) subscriber response control 211 device IvN whose operation is controlled 211 by device (12);
131.43 to U h') nk'Pi place (14
) a combination controller system (11), an RF7T system (15) connected to the polling device;
Independent broadcasting equipment (1G) and the above-mentioned subscription and response control equipment (1G)
3), T connected to J3J and independent broadcasting equipment (16)
It is equipped with a V modulator (11) and a mixing/distributing device (18) connected to the RF U:DEM (15), J: and 1-V modulator (17).

The signal transmission path (3) includes a main cable (31) connected to the mixing distributor (18) and a main cable (31).
) is sequentially connected to the -C bidirectional amplifier (33), the J: and the bidirectional duplexer (34) via the nub cable (32), and the bidirectional amplifier (33) is connected to the bidirectional amplifier (33). A power supply (36) is connected via a power supply inserter (35).

The terminal device (2) is connected to the two-way duplexer (34) via a protector (37), and the terminal device (2) is connected to the bidirectional duplexer (34) via a protector (37). It is connected.

FIG. 5 is a block diagram explaining in detail the configuration of the terminal device (2), which includes a duplexer (20) connected to a cable with a protector (37) interposed, and a duplexer ( 20), the terminal control unit (22) connected via the dem (21)
), an electronic tuner (23) that operates with the signal from the duplexer (20) as input when a control signal from the terminal control section (22) is applied, and a control 211 from the terminal control section (22). When a signal is applied, the electronic tuner (23)
a descrambler (24) that performs descrambling processing using input signals from the terminal controller (22), a status display (25) that operates based on control signals from the terminal control section (22), and a remote control keypad ( 5) and a non-volatile memory that supplies the physical address signal and logical address signal g to the terminal control section (22), respectively. The memory (27028) consisting of t is (j).

FIG. 6 is a front view of the terminal device (2), and the status indicator f
25) Toshi C pay TV display lamp (25a) (25b
), reservation display lamp (25c), subscription and response display lamp (2M), code σ record display lamp (2!+ (! l
, Jinel J3 J:bi1--Pad data input table;
When rX19 (2!+r) is on the right, the remote control signal receiver (29) is on the right.

Fig. 7 is a plan view of the keypad (5) of the beam 'E' controller, including the paid 'FV related keys (51), Chitnel selection, J3 and subscriber response data manual input 4-- (!+2).
, a remote control key (53), and a remote controller signal output monitor lamp (54).

FIG. 2 is a diagram showing the format of the signal output from the subscriber response control 211S (13), which includes synchronization data, 4-byte terminal address data (logical address data), command data, etc., and BCC data. It is composed of.

The subscriber response data collection method in the bidirectional CAIV system having the above configuration will be explained in detail with reference to the procedure diagram shown in FIG.

At the beginning, it is a random unique object stored in the mail (27) of the terminal device (2). The address is read from the central control unit (1) by J3, and the physical address is S=
-word r CPU ``A ii:''/ (12
), set the logical addresses in order, and at the same time CI〕U
A so-called initialization is performed by writing the steps 1 to the device (12).

After that, first, in the subscriber response control device (13),
The lowest 1 byte of the terminal address data is masked, a signal containing command data for starting a subscriber response is generated, and the signal is sent to each terminal through the signal transmission path (3).
By transmitting to 2J, all terminal devices (2, i.e., basic terminal address 0 to
All terminal devices corresponding to basic terminal address +127 (
In 2), data to be responded to is prepared. In this case, the subscriber response display lamp (25d) of the terminal device (2) is blinked to prompt the subscriber to input response data. Then, while looking at the menu displayed on the V image receiver 11 (4) and checking the predetermined data on the keypad data input display (25f), input it using the keypad (5). ) prepares to send the input data.

Next, when preparations for sending Hapo subscriber data are completed, if you set the address of the lowest one pie 1~ to 0 and transmit the response permission command data, the basic terminal address +
The terminal device (2) having the logical address O receives the above data and transmits the already prepared subscriber response data. In the subscriber response control device (13), above 1, C
When the subscription and response data are received, the lowest 1by1- address is set to 1 and response permission command data is transmitted, the basic terminal address +1 logic vl! The terminal device having the address receives the above f-event and has already reached the semi-Iih address.
Send the subscriber response data being displayed.

Below, we will similarly increment the lowest 1-byte address by 1 (until it reaches 127) and skip sending the subscriber response data. It is possible to collect subscription response data from all terminal devices.

After that, by changing the upper 3 bytes of the address, you can set up a logical address group and perform the same operations as above to collect subscriber response data from all terminal devices. can.

In addition, in the above explanation, the subscription name Otani i! , IJ t
Only the data transfer operation between the ill device (13) and the terminal device (2) is described, and there is no need to specifically explain the corresponding operations of the other components.
Since this is well known, the explanation will be omitted.

The data collection time using the subscriber response data collection method described above is as shown in Fig. 3 when the data transmission rate is 16,000 bpS, and is extremely long.
It's time. Further, although the logical address setting range of the terminal device is 228, the above setting range can be increased or decreased by increasing or decreasing the number of bytes of the unused address data.

<Effects of the Invention> As described above, the present invention can shorten the data collection time as a whole by shortening the l-l111 time for transmitting data to the terminal device and reducing the terminal identification data. Furthermore, terminal logical addresses are set only by the central control unit and terminal addresses are centrally managed.
<1 It has the unique effect of being able to prevent confusion in identification, and furthermore achieving miniaturization of the terminal device.

[Brief explanation of drawings]

Figure 1 is a diagram explaining the operating procedure of the subscriber response data collection method, Figure 2 is a diagram showing the signal format, Figure 3 is a diagram showing the relationship between the data collection time and the number of terminal devices, and Figure 4 is a diagram showing the relationship between the data collection time and the number of terminal devices. FIG. 5 is a block diagram, not schematically shown, of the CATV system; FIG. 5 is a block diagram, not schematically shown, of the terminal device; FIG. 6 is a front view of the terminal device; and FIG. 7 is a plan view of a remote control keypad. (1)...Central control unit, (2)...Terminal device, (
3)...Signal transmission line, (5)...S [4.
- Bad, (12)...CP LJ wave device (13).
...Join j1 response control installed, (27) (28)...MEL

Claims (1)

[Claims] 1. Central system with computer system control device, terminal control device, and remote control device. multiple terminal devices with keypads and the connection between the central control device and each terminal device. It consists of a signal transmission path connecting between In a two-way CATV system, The central controller determines the physical address of the terminal device. Read the logical address for easy management. In addition to having the function of assigning If the terminal device has non-volatile memory physical address and assigned by a central controller. A machine that stores the assigned logical address. from the central control unit above to the bottom Transmits a logical address signal with masked digits. The upper digits are the same by sending Makes the terminal device prepare for data transmission, Next, the logical address signal of only the least significant digit is By transmitting to transmit stored data, After that, change the logical address of the upper digit. to send data to the corresponding terminal device. Prepare and send stored data A two-way CATV system characterized by How to collect subscriber response data in the system formula.