KR101057683B1 - Multi-TV Standard Broadcast Signal Detection System and Method - Google Patents

Abstract

The present invention relates to a system for detecting a multi-TV standard broadcast signal, comprising a detection means for detecting a head portion of a standard broadcast signal so as to receive a multi-TV standard broadcast signal. 12) and a tuner block 10 to which the audio signal detector 14 is connected, and a microcontroller 16 for controlling the FPGA of the tuner block 10 to receive multiple television standard broadcast signals. The present invention also provides a system for detecting multiple television standard broadcast signals using such a system.

Television standard broadcast signal, detection system.

Description

DETECTION SYSTEM AND METHOD FOR MULTIPLE TELEVISION STANDARD BROADCASTING SIGNALS}

The present invention relates to a system for detecting a multi-TV standard broadcast signal. In particular, an analog television tuner capable of receiving a multi-TV standard broadcast signal enables a multi-TV standard broadcast signal to be detected and tuned to a standard broadcast signal of a corresponding viewing area. A signal detection system. The present invention also relates to a method for detecting a multi-TV standard broadcast signal.

In general, different color television transmission systems are adopted for each country or region. In particular, in the case of analog television, the standard broadcasting signal transmission method is NTSC (National Television System Committee), PAL (phase alternation line system), SECAM (sequentiel couleur a memoire), etc. It is uniquely selected and implemented according to Accordingly, in the case of an analog television receiver, the television tuner can detect and receive only a broadcast signal of a specific transmission method implemented in the country or region.

For example, the types of transmission systems according to the video and audio signal transmission methods currently implemented by country or region are shown in Table 1 below.

                    Table (1)

system Video signal transmission Voice signal transmission   I    PAL    FM + NICAM (I)   B    PAL    FM + FM (B / G-A2)   G    PAL    NICAM + FM (B / G-NICAM)   L    SECAM    AM + NICAM (L / DK3)   D / K    PAL    FM + FM (DK2)   D / K    PAL    FM + NICAM (DK2)   D / K    NTSC / PAL    FM + FM (L / DK3)   M / N    NTSC / PAL    BTSC (M / N-BTSC / EIA J)   M / N    NTSC / PAL    FM + FM (M / N-A2)   M / N    NTSC / PAL    FM + FM (DK2)   M / N    NTSC / PAL    FM + FM (L / DK3)

Such a transmission system is limited to the transmission of standard broadcast signals carried out in the country or region concerned, and the signal reception of analog television is adapted to such a transmission system. However, when a user wants to select a specific transmission system by distributing a television receiver to a country or region equipped with various transmission systems, or by operating one or more transmission systems in the country or region, detection of multiple television standard broadcast signals is difficult. Will be needed.

In such a case, the tuner of the analog television will have to be modified or changed to detect the multi-TV standard broadcast signal.

In the present invention, the invention was made in view of the above. In the present invention, an analog television tuner capable of receiving multiple television standard broadcast signals enables the multiplexing to detect and tune to standard broadcast signals of the viewing area. It is an object of the present invention to provide a system and method for detecting television standard broadcast signals.

To this end, the present invention includes a detection means for detecting the head portion of the standard broadcast signal so as to receive multiple television standard broadcast signals, and is implemented by a field programmable gate array (FPGA) and has a video signal detector and an audio signal on the output side. A system for detecting a multi-television standard broadcast signal comprising a tuner block to which a detector is connected and a microcontroller controlling the FPGA of the tuner block to receive the multi-television standard broadcast signal.

The present invention also provides a tuner block including a detection means for detecting a head portion of a standard broadcast signal so as to receive multiple television standard broadcast signals and implemented with an FPGA and having an image signal detector and an audio signal detector connected to an output side. Providing a microcontroller for controlling the FPGA of the tuner block to receive multiple television standard broadcast signals; powering on or resetting the tuner block and the microcontroller; providing a specific broadcast signal to a register of the tuner block It provides a method for detecting a multi-TV standard broadcast signal comprising the setting step, and confirming the normal output of the video signal and the audio signal data of the video signal detector and the audio signal detector of the tuner block.

Referring to the present invention in more detail based on the accompanying drawings as follows.

Figure 1 shows the configuration of the present invention. The present invention consists of a tuner block (10) in the form of a tuner chip comprising tuning means for tuning to broadcast signals of each transmission scheme so as to receive multiple television standard broadcast signals. The tuner block 10 includes a tuner including detection means for detecting each standard broadcast signal, for example, by automatically detecting head portions of these standard broadcast signals in response to standardized NTSC, PAL or SECAM color image transmission schemes. The chip is implemented as a field programmable gate array (FPGA). The video signal detector 12 and the audio signal detector 14 are connected to the output side of the tuner block 10 having an antenna connected to the input side.

Tuning through the tuner block 10 is made by the microcontroller 16 of the CPU controlling the FPGA of this tuner block 10. The microcontroller 16 controls the tuner block 10 for receiving multiple television standard broadcast signals so that a channel of a television standard broadcast signal can be selected by a remote operation of a user such as a remote controller, for example. Communication between the microcontroller 16 and the tuner block 10 is made by an I2C interface. In addition, the microcontroller 16 is connected to the output side of the video signal detector 12 and the audio signal detector 14 by the I2C interface, respectively, and outputs the video signals output from the output sides of the video signal detector 12 and the audio signal detector 14. And whether or not normal data is output to the sound ray signal.

Such a system of the present invention operates in accordance with the flow of operation as shown in FIG. 2.

First, power-on or reset of the components of the microcontroller 16, the tuner block 10, the video signal detector 12, and the audio signal detector 14 is performed to start operation of the system (step S1). ).

The user, for example, allows the CPU to set a specific broadcast signal (channel, color standard, audio standard) in the register of the tuner chip constituting the tuner block 10 (step S2).

When a specific standard broadcast signal is set in step S2, the head portion of the standard broadcast signal is automatically detected to detect a standard broadcast signal (step S3).

When a specific standard broadcast signal is detected in step S3 and a user-selected standard broadcast signal including a video signal and an audio signal is output from the tuner block 10, when the standard broadcast signal is normally output, the user outputs the broadcast signal. TV viewing of the required channel can be made (step S4), and if the user-selected standard broadcast signal is not output, the CPU will cause the broadcast signal to be reset in step S5.

As described above, the present invention comprises a tuner block including a detection means for detecting a head portion of each standard broadcast signal and a microcontroller for controlling the multiple TV standard broadcast signals so as to receive multiple television standard broadcast signals. In the country or region where the transmission is to be carried out, it is possible to detect and tune to the user selected standard broadcast signal from the multi-TV standard broadcast signal.

1 is a block diagram of the present invention.

2 is an operational flowchart of the present invention.

<Code Description of Main Parts of Drawing>

10: tuner block, 12: video signal detector, 14: audio signal detector, 16: microcontroller.

Claims (2)

A tuner block comprising a detection means for detecting a head portion of a standard broadcast signal so as to receive multiple television standard broadcast signals and implemented with an FPGA and having an image signal detector and an audio signal detector connected to an output side, and multiple television standard broadcast signals System for detecting multiple television standard broadcast signals, characterized in that it comprises a microcontroller for controlling the FPGA of the tuner block to receive the signal. Providing a tuner block including a detection means for detecting a head portion of a standard broadcast signal to receive a multiple television standard broadcast signal and implemented with an FPGA and having an image signal detector and an audio signal detector connected to an output side; Providing a microcontroller for controlling the FPGA of the tuner block to receive a standard broadcast signal, powering on or resetting the tuner block and the microcontroller, setting a specific broadcast signal in a register of the tuner block, the tuner And determining the normal output of the video signal and the audio signal data of the video signal detector and the audio signal detector of the block.

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