KR20130084351A

KR20130084351A - A rf broadcast signal reproduction device for test use

Info

Publication number: KR20130084351A
Application number: KR1020120005052A
Authority: KR
Inventors: 홍석진
Original assignee: (주)디티브이인터랙티브
Priority date: 2012-01-17
Filing date: 2012-01-17
Publication date: 2013-07-25

Abstract

The present invention relates to a test RF broadcast signal transmission apparatus. An apparatus for transmitting a test RF broadcast signal according to the present invention includes: broadcast signal data storage means for synchronizing and storing the collected RF broadcast signal data and GPS information corresponding to the RF broadcast signal data while moving in a predetermined region range; Broadcast signal data reading means for reading RF broadcast signal data and GPS information stored in synchronization with the broadcast signal data storage means; RF broadcast signal transmitting means for converting the digital signal which is the RF broadcast signal data read out by the broadcast signal data reading means into a corresponding IF analog signal, and converting the IF analog signal into an RF broadcast signal and transmitting it; A GPS output device for displaying GPS information corresponding to the RF broadcast signal transmitted by the RF broadcast signal transmitting means; Primary power supply means for supplying power for the operation of the respective parts from the outside; Including a built-in power battery, characterized in that it comprises a secondary power supply means for supplying power for the operation of each part in place of the primary power supply means.

Description

RF Broadcast Signal Reproduction Device for Test {A RF Broadcast Signal Reproduction Device For Test Use}

The present invention relates to an RF broadcast signal transmitting device for testing, and more particularly, to enable the RF reception performance test according to the position and the moving speed of the broadcast receiving device occurring in an actual broadcasting environment, and having a secondary power supply means for mobility. The present invention relates to a test RF broadcast signal transmitter capable of transmitting a test RF broadcast signal reflecting a real channel environment to a mobile receiver regardless of a test receiver and a test environment.

The conventional test RF broadcast signal transmitting apparatus 10 of FIG. 1 includes a storage means 11 for storing broadcast signal data, and a signal processing means for reading broadcast signal data from the storage means 11 and converting it into an IF analog signal. (13), an RF upconverter 50 for converting the IF signal generated by the signal processing means 13 into an RF broadcast signal, and an RF antenna for transmitting the RF broadcast signal generated by the RF upconverter 50 ( 80).

The conventional test RF broadcast signal transmitting apparatus 10 generates noise or fading for reproducing various environments of broadcast reception in the process of generating an RF broadcast signal corresponding to the broadcast standard of the test target receivers 21, 22, and 23. With the means of generation, RF performance tests were performed on the receivers 21, 22, and 23 under test in a laboratory or a mass production line.

However, testing the receivers 21, 22, and 23 with various effects on the RF broadcast signal is not only significantly different from the actual broadcast receiving environment, but also RF performance on the geographical position, movement, and speed of the mobile receiver. There are inadequate points in determining the size of the device, and there are problems in that it is difficult to apply to various situations due to the enlargement of the device and the expensive equipment, and the mobility is limited.

In addition, even when the actual receiver 21, 22, 23 captures the local RF broadcast signal to be used to reproduce the actual broadcast environment, except that the RF broadcast signal transmitted for testing is a locally captured broadcast signal. RF reception performance of the position, movement or moving speed of a broadcast receiver, etc. is difficult to grasp.

In addition, in the case of the conventional RF broadcast signal transmission apparatus fixedly used in a laboratory or a mass production line, the test RF broadcast signal is reproduced by a simple presentation performed in various places or a limitation of mobility required in an AS environment. It can be very inconvenient to do, and there is a problem that concrete reproduction of the broadcasting environment is difficult.

An object of the present invention is to implement a test RF broadcast signal transmission apparatus that enables the RF reception performance test according to the geographical position, the moving speed and the moving direction of the broadcast receiving device that occurs in the actual broadcast environment.

Another object of the present invention, the built-in secondary power supply means to secure the mobility of the test RF broadcast signal capable of transmitting a test RF broadcast signal to the mobile receiver anytime, anywhere, regardless of the test environment and use for the broadcast receiver Implement a delivery device.

The RF broadcast signal transmission apparatus for a test according to the present invention for achieving the above object is a broadcast signal in which the RF broadcast signal data collected while moving a predetermined region range and GPS information corresponding to the RF broadcast signal data are synchronized and stored. Data storage means; Broadcast signal data reading means for reading RF broadcast signal data and GPS information stored in synchronization with the broadcast signal data storage means; RF broadcast signal transmitting means for converting the digital signal which is the RF broadcast signal data read out by the broadcast signal data reading means into a corresponding IF analog signal, and converting the IF analog signal into an RF broadcast signal and transmitting it; A GPS output device for displaying GPS information corresponding to the RF broadcast signal transmitted by the RF broadcast signal transmitting means; Primary power supply means for supplying power for the operation of the respective parts from the outside; Including a built-in power battery, characterized in that it comprises a secondary power supply means for supplying power for the operation of each part in place of the primary power supply means.

The GPS information may include agenda location information, agenda moving speed, and agenda moving direction information of a test target RF broadcast signal receiving apparatus.

The GPS output device outputs the position information and the movement state corresponding to the RF broadcast signal being transmitted by the RF broadcast signal transmitting means on the electronic map of the corresponding area to display the agenda position and the moving speed of the test target RF broadcast signal receiving device. In addition, it is possible to test the signal reception status for the local channel situation by the moving direction and the geographical feature.

The secondary power supply means includes a built-in power battery for operating the system when carrying; When the power is supplied by the primary power supply means, the system is operated by the power supplied from the primary power supply means, and in the case where there is no power supply by the primary power supply means, by the built-in power battery Switching means for switching to operate the system; It characterized in that it comprises a charging circuit for charging the internal power battery by the power supplied from the primary power supply means.

The broadcast signal that can be transmitted by the portable RF broadcast signal transmitter is characterized by including a digital terrestrial TV broadcast signal, a mobile broadcast signal, an analog TV broadcast signal, a wireless broadband signal, and a radio signal.

The data stored in the broadcast signal data storage means is divided into a header and a data area, which are information areas for the received RF broadcast signal and the GPS signal, and the data area includes a GPS data area and an RF broadcast signal data area. do.

The present invention reproduces the terrain or geographic position, the moving speed, and the moving direction of the mobile receiver under test according to the actual channel environment according to the above configuration, and thus transmits an RF broadcast signal to the actual broadcasting environment use situation of the mobile receiver. Enable practical RF reception test

In addition, by providing a secondary power supply means including a built-in power battery to ensure the mobility of the test RF broadcast signal transmitting device to test the RF receiver for mobile receivers anytime, anywhere, regardless of test environment and use Broadcast signal transmission becomes possible.

Therefore, it can be usefully used for presentations or demonstrations of the performance of mobile devices in locations where primary power supply is difficult, and can meet various AS demands.

1 is an exemplary control configuration diagram of a conventional test RF broadcast signal transmission apparatus.
2 is a control block diagram illustrating an operating state of the test RF broadcast signal transmitting apparatus of the embodiment of the present invention;
3 is a schematic diagram illustrating a configuration of broadcast signal data stored in a test RF broadcast signal transmitter according to an embodiment of the present invention.
4 is a diagram illustrating an RF broadcast signal in an actual channel environment transmitted by the test RF broadcast signal transmitter according to an embodiment of the present invention.
5 is a schematic diagram illustrating a test state of a mobile RF broadcast signal receiver by the test RF broadcast signal transmitter of an embodiment of the present invention.

Hereinafter, a configuration of a preferred embodiment of a test RF broadcast signal transmitting apparatus according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

The test RF broadcast signal transmitting apparatus 100 according to the present embodiment includes a broadcast signal data storage means in which the RF broadcast signal data collected while continuously moving in a predetermined region range and GPS information corresponding to the RF broadcast signal data are synchronized and stored ( 110, the broadcast signal data reading means 120 for reading the RF broadcast signal data and the corresponding GPS information from the broadcast signal data storing means 110, and reconstructing the RF broadcast signal from the read RF broadcast signal data. RF broadcast signal transmitting means 130 for transmitting and receiving, GPS output device 150 for displaying the GPS information read out from the broadcasting signal data reading means at the same time as transmitting the RF broadcast signal, and power supply for the operation of each part from the outside. Including the primary power supply means 160 and the built-in power battery for supplying to the primary power supply means 160, and selectively for the operation of each part And a secondary power supply means 180 for supplying a circle.

In the present embodiment, the broadcast signal data storing means 110 stores the RF broadcast signal data and the corresponding GPS information, and the broadcast signal data reading means 120 reads the GPS data and the RF broadcast signal data stored in synchronization therewith. Input to the signal processing means and the GPS output device.

Referring to the data structure stored in the broadcast signal data storage means 110 of the present embodiment, the broadcast signal data includes an information area and a broadcast signal data area for an RF broadcast signal, and the broadcast signal data area includes a GPS data area and an RF broadcast. It consists of a signal data area, which is composed of captured RF broadcast signal data.

For example, as shown in FIG. 3, the RF broadcast signal data header of the present embodiment may include RF signal index, bandwidth, RF frequency, IF frequency, RF mode, location of captured data, total time, and GPS data length. Include.

The broadcast signal data area of the present embodiment includes GPS data (GPS data area) having a predetermined length (GDL), and the position where the RF broadcast signal data starts is determined by the length of the GPS data.

That is, the captured data position designates the captured RF broadcast signal data and the GPS data position, and the data corresponding to the GPS length at the corresponding position is GPS data, except for the data of the RF broadcast signal data.

The GPS data of the present embodiment includes latitude and longitude data corresponding to the current position and moving speed and moving direction data (ie, GPS information at the time of RF broadcast signal capture) when the broadcast receiver is moved.

The RF broadcast signal transmitting means 130 of this embodiment is generated by the signal processing means 131 and the signal processing means 131 for restoring the RF broadcast signal data read by the broadcast signal data reading means 120 into an analog IF signal. An RF up-converter 135 for converting the IF signal into an RF broadcast signal, and an RF antenna 138 for transmitting the RF broadcast signal formed in the RF up-converter 135.

The signal processing means 131 according to the present embodiment refers to the header of the RF broadcast signal data stored in the broadcast signal data storage means 110 and converts it into an analog signal of a corresponding IF frequency and inputs the RF up-converter 135. do. The frequency of the IF signal may be changed according to the set frequency of the RF up-converter 135 and is not limited to a specific fixed frequency. It is also possible to generate various types of IF signals according to the purpose of the test.

The broadcast signal that can be generated by the test RF broadcast signal transmitter 130 of this embodiment is DVB-T, DVB-H, ATSC, DVB-C, Opencable, DVB-S, DVB-S2, ISDB-T, DTMB. Digital (mobile) TV broadcast signals such as (DMB-TH), ADTB-T, ATSC-MH, DVB-T2, analog radio broadcast signals such as FM, digital radio broadcast signals such as DRM, analog TV signals, Wi-Fi Wireless broadband signals such as Wibro, LTE, and the like.

For example, in the test RF broadcast signal transmitter 130 of the present embodiment, the RF up-converter 135 uses an operable in a range of approximately 50M to 6 GHz to generate an RF broadcast signal. Therefore, the digital TV (50M to 1G Hz), T Upconversion to DMB (1452 ~ 1492 MHz, L band), satellite broadcasting (950M ~ 2150MHz), RF signals for wireless broadband signals (4-5GHz) such as LTE or WiPi is possible. In addition, the present invention is not limited to the above-described embodiments and may generate an RF broadcast signal for a device operating in various frequency ranges, for example, 60 to 100 GHz, which can be applied to a broadcast receiving apparatus according to the expansion of the RF frequency band due to the progress of technology. An RF upconverter can be selected.

In addition, the operating ranges of the RF up-converter 135 and the RF antenna 138 are not limited to the above ranges for various test purposes, and according to the embodiment, the types of the test receivers 21, 22, and 23, and the RF broadcast. It is possible to select a device operable in various ranges according to the kind of signal.

The GPS output means 150 according to the present embodiment receives GPS information stored in synchronization with the RF broadcast signal data from the broadcast signal data reading means 120 and changes the agenda position of the test receivers 21, 22, and 23 into latitude and longitude. Information on the agenda movement speed and direction.

In addition, the GPS output means 150 may be configured to output and show the agenda position of the receiver under test (21, 22, 23) on the electronic map of the region.

Therefore, the test RF broadcast signal transmitting apparatus 100 according to the present embodiment is placed in an actual channel environment and embeds an electronic map of an area in which the test RF broadcast signal transmitting apparatus 100 moves at the time of collecting and storing the RF broadcast signal, or uses the Internet. It is preferable that the local electronic map is implemented to be downloadable through.

On the other hand, the test RF broadcast signal transmission apparatus of the embodiment of the present invention is capable of outputting GPS information stored in synchronization with the RF broadcast signal data to the broadcast signal data storage means 110 when transmitting the RF broadcast signal with a GPS antenna. . In another embodiment of the present invention, the GPS information may be transmitted through an RF antenna.

Accordingly, a GPS receiver for broadcasting and receiving GPS information at the same time as a broadcast receiver and a navigation apparatus equipped with a GPS device is also provided, thereby testing the RF broadcast signal of the test receiver and the GPS signal. It is possible to perform tests on the same time.

To this end, the GPS transmitting means of the preferred embodiment of the present invention includes a GPS signal processing means 151 for processing the GPS data read by the broadcast signal data reading means 120 from the broadcast signal data storing means 110, and a GPS signal. GPS antenna 153 is transmitted to the test target broadcast receiving device 21.

Test RF broadcast signal transmission apparatus 100 of the embodiment of the present invention is a secondary power supply to the power supply by the primary power supply means 160 and the internal power supply battery 181 for direct supply of external power. It is provided with a power supply means 180.

For example, the secondary power supply unit 180 has a built-in power battery 181 for operating the system when carrying, and the primary power supply unit 160 when power is supplied by the primary power supply unit 160. Switching means 183 for operating the system by the power supplied from the switch to switch the system to operate by the built-in power battery 181 in the case where there is no power supply by the primary power supply means (160) And a charging circuit 188 charging the internal power battery 181 by the power supplied from the primary power supply means 160.

This ensures mobility in the test RF broadcast signal transmitting apparatus 100, enables efficient testing of the RF broadcast signal reception performance for the mobile device even in a place where it is difficult or inconvenient to supply external power as a primary power source, and demonstrates performance. And device AS can be performed.

The scope of the present invention is not limited to the above embodiments, but is determined by the matters described in the claims, and it is obvious that the present invention includes various modifications and adaptations made by those skilled in the art in the claims and equivalents.

100 ..... Testing RF Broadcasting Signal Transmitter
120 ..... broadcasting signal data reading means 130 ..... RF broadcasting signal sending means
131 ..... Signal processing means 135 ..... RF upconverter
138 ..... RF antenna 150 ..... GPS output device
GPS signal processing means 153 GPS antenna
160 ..... Primary power supply means 180 ..... Secondary power supply means
181 ..... Built-in power battery 183 ..... Switching means
188 ..... Charging circuit

Claims

Broadcast signal data storage means for synchronizing and storing the RF broadcast signal data collected in a predetermined area range and GPS information corresponding to the RF broadcast signal data;
Broadcast signal data reading means for reading RF broadcast signal data and GPS information stored in synchronization with the broadcast signal data storage means;
RF broadcast signal transmitting means for converting the digital signal which is the RF broadcast signal data read out by the broadcast signal data reading means into a corresponding IF analog signal, and converting the IF analog signal into an RF broadcast signal and transmitting it;
A GPS output device for displaying GPS information corresponding to the RF broadcast signal transmitted by the RF broadcast signal transmitting means;
Primary power supply means for supplying power for the operation of the respective parts from the outside;
And a second power supply means for supplying power for the operation of each part by replacing the primary power supply means with a built-in power battery.

The apparatus of claim 1, wherein the GPS information includes agenda position information, agenda moving speed, and agenda moving direction information of a test target RF broadcast signal receiving apparatus.

The method according to claim 1, wherein the GPS output device,
The agenda position, the moving speed, the moving direction and the geographical feature of the RF broadcasting signal receiving apparatus to be tested by outputting the position information and the moving state corresponding to the RF broadcasting signal being transmitted by the RF broadcasting signal transmitting means on the electronic map of the corresponding region. RF broadcast signal transmission device for testing, characterized in that for testing the signal reception status for the local channel situation by.

The method according to claim 1, wherein the secondary power supply means,
A built-in power battery for system operation when carrying;
When the power is supplied by the primary power supply means, the system is operated by the power supplied from the primary power supply means, and in the case where there is no power supply by the primary power supply means, by the built-in power battery Switching means for switching to operate the system;
And a charging circuit for charging the internal power battery by the power supplied from the primary power supply means.

The method according to any one of claims 1 to 4,
And a broadcast signal that can be transmitted by the portable RF broadcast signal transmitter includes a digital terrestrial TV broadcast signal, a mobile broadcast signal, an analog TV broadcast signal, a wireless broadband signal, and a radio signal.

The method according to any one of claims 1 to 4,
The apparatus for transmitting a test RF broadcast signal further comprises a GPS signal transmitting means for transmitting GPS information corresponding to the transmitting RF broadcast signal to a test target broadcast receiver.