KR101000906B1 - Multi-channel transmitting apparatus in hot-standby mode - Google Patents

Abstract

PURPOSE: A multi channel transmission device of hot standby structure is provided to switch the path effectively through one standby device about a plurality of main instrument, thereby operating a system without stopping. CONSTITUTION: A main control unit of a main instrument(30) transmits the state information of main instrument which operation is impossible with an alarm signal to a preliminary control unit. The standby control unit sets the state of preliminary instrument(40) with the same of the main instrument which operating is impossible. The main control unit switches the switch of RF of corresponding main instrument into a HPA(46) of standby instrument. The standby control unit switches a signal of a corresponding main instrument by controlling the N:1 RF switch(41) and 1:N RF switch(47).

Description

MULTI-CHANNEL TRANSMITTING APPARATUS IN HOT-STANDBY MODE}

The present invention relates to a multichannel transmitter, and more particularly, to a multichannel transmitter having a hot standby structure for use in a broadcast transmission system.

In general, a hot standby structure is a structure configured to operate a program at the same time in an active ratio and a standby, and to operate the program at the same time without stopping in the standby if an abnormal error condition occurs in the ratio. .

In the conventional broadcasting system, when implementing such a hot standby structure, the ratio ratio and the configuration of the spare equipment are configured in the same manner, and the main path and the spare path are determined using a terminating radio frequency switch (hereinafter referred to as 'RF'). It is configured to control. This will be described in detail as follows.

1 is a block diagram of a transmission apparatus having a hot standby structure of a conventional broadcast system.

As shown in the figure, the conventional transmission device is composed of a 1: 1 hot standby structure of the ratio ratio 10 and the spare equipment (20).

As shown in the figure, in the conventional broadcast system, one spare device 20 is configured per one claim ratio 10, and when the RF signal is inputted to the claim ratio 10, the distributor 31 divides it. The input is input to the spare equipment (20). The signal received by the preliminary equipment 20 is amplified by the final high power amplifier (hereinafter simply referred to as 'HPA') 26 through signal processing in the same manner as the claim ratio 10, and the channel filter ( The signal passed through 27 is transmitted to the 1: 1 RF switch 32. When an abnormal error condition occurs in the claim ratio 10, the RF switch 32 is switched to the signal of the spare equipment 20 is transmitted to the transmitting antenna.

However, when configuring a system for transmitting a multi-channel signal to the above-described hot standby transmission apparatus, the equipment is doubled according to the number of channels, which requires a lot of installation space and increases the cost. .

The present invention has been proposed to solve the above problems, and provides a multi-channel transmission apparatus having an N: 1 hot standby structure by configuring one spare device for a plurality of claim ratios for transmitting a plurality of signals. There is a purpose.

The present invention for achieving the above object, the divider for branching the signal, the first signal processing unit for signal processing the signal branched from the divider, the first signal processing unit for transmitting the signal processed from the first signal processing unit to the output terminal; A multi-channel transmission apparatus having a hot standby structure in which N (N is an integer of 2 or more) is provided for generating an output signal for signal processing and transmitting an input signal, including a switch unit. And preliminary equipment for receiving a signal from the divider of any one claim ratio, performing the same signal processing as the one claim ratio, and transmitting the same to the first switch unit, wherein the N ratios include: Each of the first control unit for transmitting the status information of the equipment to the spare equipment, wherein the spare equipment, by using the status information And a second controller for controlling. Here, the preliminary equipment, the second switch unit for switching to a signal received from the divider of any one claim ratio of the N signals input from the N dividers; A second signal processor which processes a signal received from the second switch unit; And a third switch unit configured to transfer the signal processed from the second signal processor to the first switch unit having the assertion ratio of any one of the N first switch units.

In this case, the first controller of any one claim ratio transmits an alarm signal that the operation of any one claim ratio is impossible and state information of any one claim ratio to the second controller, A switch unit controls to switch the signal from the first signal processing unit to the second signal processing unit, and the second control unit receives the alarm signal and the state information and performs the same as the state information. Set a state, and control the second switch unit to switch to a signal received from the divider of any one of the claim ratios, and wherein the third switch unit is the one of the claim ratios of the N first switch units. It is preferable to control to switch to a 1st switch part.

As described above, the present invention includes one spare device for a plurality of claim ratios, and when one of the claim ratios capable of transmitting a plurality of signals is impossible to operate, the system efficiently switches routes to the spare devices. The system can be operated without interruption.

In addition, the present invention is to configure one spare device for a plurality of claim ratio, it is effective to reduce the installation space of the system and the cost required to install the system.

The above-mentioned objects, features and advantages will become more apparent from the following detailed description in conjunction with the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same components have the same number as much as possible even if displayed on different drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a structural diagram of an embodiment of a multi-channel transmission apparatus having a hot standby structure according to the present invention. As shown in the figure, the multi-channel transmission apparatus of the present invention is composed of a claim ratio 30 of N (N is an integer of 2 or more) and one spare device (40). In this case, the N argument ratios 30 may include an input filter 31, a two-way divider 32, a down converter 33, an exciter 34, and an up-converter. (up converter) 35, up band pass filter (hereinafter referred to as 'up BPF') 36, HPA 37, RF switch 38 and channel mask filter And 39. In addition, the spare equipment 40 includes an N: 1 RF switch 41, a down converter 42, an exciter 43, an upconverter 44, an upBPF 45, an HPA 46, and a 1: N RF. It is configured to include a switch 47. Although not shown in the drawing, the plurality of claim ratios 30 and the spare equipment 40 each include a control unit, in which an abnormal error occurs in any one of the claim ratios 30, the claim ratios 30 and The spare equipment 40 is controlled. This will be described later in detail.

As described above, the multi-channel transmitter configured of the N claim ratios 30 may transmit N channels through the N claim ratios 30.

Referring to the operation of the multi-channel transmission apparatus of the present invention in detail as follows.

First, the operation of the claim ratio 30 in the steady state will be described.

For the signal input to each claim ratio 30 through the input stage, the input filter 31 filters only the desired band, and the two-way divider 32 transmits the corresponding signal to the claim ratio 30 and the spare device 40. Branch. The down converter 33 of the claim ratio 30 low-noise amplifies the signal input to the claim ratio 30 and adjusts the signal strength, and then simply a broadband phase-locked loop corresponding to the corresponding signal. After receiving a signal from a 'PLL' and converts it into a specific intermediate frequency (hereinafter, simply referred to as IF) band, only the desired band is filtered and transmitted to the exciter 34. The exciter 34 performs demodulation, channel equalization, and modulation, and the up-converter 35 receives a local signal of a wideband PLL corresponding to a transmission channel and converts it into a specific transmission channel. Adjust the signal strength. Up BPF 36 removes the local signal, and HPA 37 performs high power amplification. Finally, the channel mask filter 39 removes the out-of-band signal from the signal passing through the RF switch 38 and passes it to an antenna (not shown).

The RF switch 41 of the spare device 40 receives N signals from the N two-way dividers 32 of the claim ratio 30, and controls the control unit of the spare device 40 (hereinafter, referred to as the claim ratio 30). The control unit is a main control unit, the control unit of the preliminary equipment 40 is called a "preliminary control unit" is responsible for the function of selecting one of them, the end RF switch 47 is the down-converter 42 , Which connects the signals processed by the exciter 43, the up-converter 44, the up-BPF 45, and the HPA 46 to the RF switch 38 of the claim ratio where an error has occurred under the control of the preliminary controller. In charge of the function. On the other hand, since the functions of the down-converter 42, exciter 43, up-converter 44, up-BPF (45) and HPA (46) of the spare equipment 40 is the same as the ratio, the detailed description thereof will be omitted. Shall be. The HPA 46 of the spare equipment 40 is kept in the OFF state.

As described above, the N assertion ratios 30 transmit the N RF output signals to antennas (not shown) to transmit N broadcast signals in a normal state.

If, among the N claim ratios 30, the specific equipment is in an abnormal state and the claim ratio 30 becomes inoperable, the main control unit of the claim ratio 30 may be operated as a preliminary control unit. It also transmits the status information of the claim fee, which can not be operated together. Here, the status information includes input channel information, output channel information, reception level information, output level information, and exciter status information of the corresponding ratio.

Subsequently, when the preliminary control unit receives the alarm signal and status information from the main control unit and sets the state of the spare equipment 40 to be equal to the state of the non-operating claim ratio, the main controller sets the RF switch of the claim ratio to HPA (37). ) To HPA 46 of the spare equipment. Subsequently, the preliminary control unit controls the N: 1 RF switch 41 and the 1: N RF switch 47 to switch a signal having a non-operating ratio.

In this state, the signal input to the downconverter 33 through the two-way divider 32 of the inoperable claim ratio 30 (for the sake of convenience, the x-th claim ratio for convenience) is inputted by the HPA 37. Since it is OFF, it is not output to the RF output terminal. On the other hand, since the RF switch (41, 47) of the spare equipment is transferred to the x-th path, the signal input to the N: 1 RF switch 41 through the two-way divider 32 and the x-th claim ratio 30 and Passed through the same equipment as set up, and passed from the 1: N RF switch 47 to the RF switch 38 of the x-th claim ratio 30, passes through the channel mask filter 39, the x-th claim ratio (30) The same signal can be output to the RF output stage as in the steady state operation.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

1 is a block diagram of a transmission apparatus of a hot standby structure of a conventional broadcasting system;

2 is a structural diagram of an embodiment of a multi-channel transmission apparatus having a hot standby structure according to the present invention;

<Description of the symbols for the main parts of the drawings>

30: Claim ratio

31: input filter

32: two-way divider

33, 42: downconverter

34, 43: exciter

35, 44: upconverter

36, 45: up BPF

37, 46: HPA

38: RF switch

39: channel mask filter

40: spare equipment

41: N: 1 RF Switch

47: 1: N RF Switch

Claims (4)

delete delete delete A divider for branching a signal, a first signal processor for signal processing a signal branched from the divider, and a first switch unit for transmitting a signal processed from the first signal processor to an output terminal, In a multi-channel transmission apparatus having a hot standby structure in which an argument ratio for generating an output signal for transmission is provided with N (N is an integer of 2 or more), And a preliminary device for receiving a signal from the divider of any one of the N claim ratios, performing the same signal processing as the one of the claim ratios, and transmitting the same to the first switch unit. N claim ratios, A first control unit which transmits the state information of the claim ratio to the spare equipment; A down converter for low noise amplifying the input signal and adjusting the strength of the signal, converting the signal from a broadband phase synchronization circuit corresponding to the corresponding signal into a specific intermediate frequency band, and filtering and transmitting only a desired band to an exciter; An exciter for demodulating, channel equalizing, and modulating the signal transmitted from the down converter; An up-converter which receives a local signal of a wideband PLL corresponding to a transmission channel, converts a signal transmitted from the exciter into a specific transmission channel, and adjusts the signal strength; An upBPF for removing a local signal of the signal transmitted from the upconverter; HPA to perform a large power amplification of the signal transmitted in the upBPF; Each of the channel mask filter to remove the out-of-band signal from the signal transmitted from the HPA to the antenna, The spare equipment, A second controller for controlling the spare equipment by using the status information; A second switch unit for switching to a signal received from the divider having the assertion ratio of any one of N signals input from the N dividers; A second signal processor which processes a signal received from the second switch unit; And A third switch unit for switching the signal processed from the second signal processor to the first switch unit of the assertion ratio of any one of the N first switch units; And It processes signals including down converter, exciter, up converter, up converter, up converter, up converter, up converter, up converter, up converter, up converter The first control unit of any one claim ratio transmits an alarm signal indicating that the operation of any one claim ratio is impossible to the second control unit and the state information of any one claim ratio, and the first switch unit Control to switch the signal from the first signal processor to the second signal processor; The second control unit receives the alarm signal and the state information, sets the state of the second signal processing unit in the same manner as the state information, and the second switch unit receives from the divider of any one of the assertion ratios. And switching the third switch unit to switch to the first switch unit having the assertion ratio of any one of the N first switch units.

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