KR19990051250A - Receiving channel setting device and method for setting signal receiver - Google Patents

Abstract

The present invention relates to a channel setting apparatus and a setting method of a canal signal receiving apparatus for selectively setting a pay broadcasting channel or a free broadcasting channel carrying a CANAL signal according to whether or not a decoder 30 is connected. 50, the key input unit 10, the decoder 30, the decoder recognition unit 40, the channel detection unit 60, and sets the channel automatic setting mode when the channel automatic setting key signal is applied from the key input unit 10. When a logic signal indicating that the decoder 30 is connected from the decoder recognizer 40 is applied, the pay broadcast channel and the free broadcast channel are set, and the decoder recognizer 40 indicates that the decoder 30 is not connected. When a logic signal is applied and a logic signal indicating the presence of the signal from the channel detection unit 60 is applied, the pay channel and the free broadcasting channel are not set, and the decoder 30 contacts the decoder recognition unit 40. When applied to a logic signal indicating the logic has not been applied to the signal indicating that the signal does not exist from kkanal kkanal detection module 60 includes a process of setting the free broadcast channels.

That is, the present invention allows the broadcast channel to be selectively set according to whether the decoder is connected to the decoder and the presence or absence of the decoder, thereby eliminating unnecessary key manipulation for resetting the channel while the viewer later checks the pay program. have.

Description

Receiving channel setting device and method for setting signal receiver

The present invention relates to a receiving channel setting apparatus and a setting method of a CANAL signal receiving apparatus for receiving a pay broadcasting signal for Europe, and more particularly, to a decoder for descrambling a pay broadcasting signal. The present invention relates to a receiving channel setting apparatus and a setting method of a canal signal receiving apparatus for selectively setting a paid broadcasting channel carrying a canal signal or a free broadcasting channel without a canal signal according to whether a connection is made or not.

Recently, the spread of broadcasting methods such as wireless broadcasting or cable broadcasting, which have been paid for by each program of the channel, has been rapidly spreading. However, since such paying broadcasting is scrambling and transmitted when broadcasting signals are transmitted from broadcasting stations, In order to receive and set it, a decoder for descrambling the scrambled signal on the receiving side, i.e., the terminal of each household (e.g., television) must be provided.

Therefore, in the case of such a broadcasting method, each user charges a viewing fee as much as the billed amount of the paid broadcasting viewed by the user.

On the other hand, in Europe, especially Germany, France, etc., the conventional signal is used as the scrambling signal of the paid broadcasting signal.

In the case of watching pay TV signals using the Canal signal, which is a European pay TV signal system, when a user wants to watch TV when the TV and the decoder are connected through an A / V connection terminal, The scrambled broadcast signal inserted with the canal signal received through the antenna is transmitted to the television, and then sent to the decoder through the switching block of the television for descrambling, and thus the descrambled broadcast signal is transmitted back to the television so that the user Pay-TV signals can be viewed. At this time, the television or the like is provided with a canal detector for detecting the presence or absence of a canal signal, and the decoding path between the television and the decoder is controlled based on the detection result of the canal signal.

On the other hand, the recent broadcast receiving apparatus, that is, the conventional signal receiving apparatus includes an automatic channel setting function therein. That is, when the user inputs a channel setting key, the broadcast channel can be automatically set in order (the setting of the reception channel is possible by detecting the synchronization signal in the broadcast signal). It is easy to set.

However, there is a problem in the channel setting method of the conventional signal receiver in a conventional television. In other words, when setting the channel according to the presence or absence of the synchronization signal, not only the free broadcasting channel but also the pay broadcasting channel carrying the last signal are set together. Since it is impossible (not descrambling), the inconvenience of viewers is to delete the pay channel set up already.

In other words, when the TV and the decoder are connected to each other through external terminals, not only the set free broadcast signal but also the paid broadcast signal containing the current signal can be viewed. If not, there is no need to set up the paid broadcast channel. In addition, it had to perform a cumbersome procedure of deleting the set pay channel again.

Accordingly, the present invention has been made to solve such a problem, and an object of the present invention is to provide a paid broadcast channel containing a pay signal or a free broadcast channel without a pay signal depending on whether a decoder for descrambling the pay broadcast signal is connected. It is another object of the present invention to provide a channel setting device and a setting method of a signal receiving device.

That is, the present invention provides a signal receiving apparatus for selectively setting a pay broadcasting channel or a free broadcasting channel carrying a signal based on whether a decoder is connected, comprising: a tuner; A key input unit for outputting a channel automatic setting key signal; A decoder recognizing unit which determines whether a decoder is connected and outputs a predetermined logic signal according to whether the decoder is connected; A channel detector which determines whether a channel signal exists in the broadcast signal tuned from the tuner and outputs a predetermined logic signal according to the presence or absence of the channel signal; Automatic channel setting from the key input unit When the key signal is applied, the channel automatic setting mode is set.If a logic signal indicating that the decoder is connected from the decoder recognizer is set, the pay broadcasting channel and the free broadcasting channel are set. If a logic signal indicating that the connection is not applied and a logic signal indicating the presence of the last signal from the channel detection unit are applied, the pay channel and the free broadcasting channel are not set, and a logic signal indicating that the decoder is not connected from the decoder recognition unit is applied. And a control unit for setting a free broadcast channel when a logic signal indicating that there is no canal signal is applied from the canal detector.

1 is a block diagram of a canal signal receiving apparatus according to the present invention;

2 is a flowchart of a process of selectively setting a reception broadcast channel in a canal signal receiving apparatus according to the present invention;

<Explanation of symbols for main parts of the drawings>

10: key input unit 20: micom

30: decoder recognition unit 40: decoder

50: tuner 60: canal detector

The above objects and various advantages of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of a canal signal receiving apparatus according to the present invention, which includes a key input unit 10, a microcomputer 20, a decoder 30, a decoder recognition unit 40, a tuner 50, and a canal detection unit 60. It includes.

As shown, the key input unit 10 is provided with a plurality of function keys (not shown) for controlling the operation of V-C, such as a channel up / down key, an automatic channel setting key, and the like, which is input by the user. And applies a key signal corresponding to the pressed key to the microcomputer 20.

The decoder 30 is interconnected through a channel receiver and an external input terminal (not shown), and has a function of descrambling a scrambled broadcast signal including a channel signal.

The decoder 30 is connected to the decoder recognition unit 40 in the receiver. That is, the decoder recognizer 40 determines whether the decoder is connected and outputs a predetermined logic signal according to whether the decoder is connected, for example, a high or low signal. This connection determination is possible depending on whether or not an external jack is connected to an input terminal connecting the decoder 30 and the decoder recognizing unit 40, and this fact is known to those skilled in the art. It will be easy to see.

On the other hand, the tuner 50 has a phase-locked loop formed therein as in the prior art, thereby controlling the oscillation frequency of the voltage-controlled oscillator in accordance with the PLL data from the microcomputer 20, thereby controlling the frequency signal of the channel selected by the user through an external antenna. Will be received. In addition, the tuner 50 receives and sets a free broadcast channel, which is a general broadcast signal, and a paid broadcast channel including a channel signal according to the channel setting mode signal from the microcomputer 20.

The canal detector 60 according to the present exemplary embodiment detects a canal signal from a broadcast signal from the tuner 50 in the channel setting mode, and provides a logic signal according to the presence or absence of the canal signal to the microcomputer 20.

That is, the microcomputer 20 according to the present invention receives a broadcast signal according to the logic signal according to the connection of the decoder 30 from the decoder recognition unit 40 described above and the logic signal according to the presence of the signal in the channel setting mode. It is to selectively control the device.

Hereinafter, the above-described configuration will be described in detail with reference to the flowchart of FIG. 2 attached to a process of selectively setting a reception broadcast channel in the CAN signal reception apparatus according to the present invention.

First, in step S100, the microcomputer 20 determines whether the channel automatic setting key signal is applied from the key input unit 10, and sets the channel setting mode when the channel setting key signal is applied (S102). Proceed to).

In step S104, the microcomputer 20 selectively drives the broadcast signal receiving apparatus from the decoder recognition unit 40 in response to a logic signal depending on whether the decoder 30 is connected.

In detail, if a logic signal indicating that the decoder 30 is connected from the decoder recognition unit 40, for example, a high signal, is provided to the microcomputer 20, the microcomputer 20 proceeds to step S106 and is received. The tuner 50 is controlled to set together all broadcast channels, that is, a free broadcast channel and a paid broadcast channel on which a uplink signal is carried.

However, if a logic signal from the decoder recognition unit 40 indicating that the decoder 30 is not connected, for example, a low signal, is provided to the microcomputer 20 in step S104, the microcomputer 20 proceeds to step S108. In operation, it is determined whether there is a signal from the currently received broadcast signal.

That is, when a logic signal indicating that a canal signal exists in the current reception broadcast signal from the channel detection unit 60, for example, a high signal is applied to the microcomputer 20, the microcomputer 20 proceeds to step S102 and the current reception broadcast. The process for setting up the next channel (that is, skipping the current reception channel) without setting up the channel (ie skipping the current receiver channel) is prepared.

If a logic signal indicating that there is no canal signal in the current reception broadcast signal, for example, a low signal, is applied to the microcomputer 20, the microcomputer 20 proceeds to step S110 to receive the current signal. Of the broadcast signals, only the general broadcast signal, that is, the free broadcast signal, is set as a channel.

That is, in step S110, since the decoder 30 is not currently connected to the broadcast reception device (since descramble of the pay broadcast signal in which the up-to-date signal exists), only the general broadcast channel is set.

As described above, the present invention allows the user to selectively set the broadcast channel according to whether the decoder is connected to the decoder and whether there is a signal present, thereby eliminating unnecessary key manipulation for resetting the channel while the viewer later checks the pay program. It works.

Claims (2)

In the canal signal receiving apparatus for selectively setting a pay broadcast channel or a free broadcast channel carrying a signal based on whether the decoder 30 is connected, A tuner 50; A key input unit 10 for outputting a channel automatic setting key signal; A decoder recognizing unit 40 which determines whether the decoder 30 is connected and outputs a predetermined logic signal according to whether the decoder is connected; A channel detection unit (60) for determining whether a channel signal exists in the broadcast signal tuned by the tuner (50) and outputting a predetermined logic signal according to the presence or absence of the channel signal; When the channel automatic setting key signal is applied from the key input unit 10, the channel automatic setting mode is set, and when the logic signal indicating that the decoder 30 is connected from the decoder recognition unit 40 is applied, the pay channel and the free channel are free. The pay channel is set when a logic signal for setting a broadcast channel and a logic signal for notifying that the decoder 30 is not connected from the decoder recognizer 40 and a signal for notifying the presence of a signal of the last signal are applied from the channel detector 60. And does not set a free broadcast channel, a logic signal indicating that the decoder 30 is not connected from the decoder recognition unit 40 is applied, and a logic signal indicating that no signal exists from the channel detection unit 60 is provided. And a control unit (20) for setting the free broadcast channel when applied. In the channel automatic setting method of the channel signal receiving apparatus for selectively setting the pay broadcast channel or the free broadcast channel carrying the signal based on whether the decoder 30 is connected, Determining whether a channel setting key signal is applied and setting the channel setting mode when the channel setting key signal is applied; Determining whether the decoder (30) is connected when the channel setting mode is set; Setting up the pay broadcast channel and the free broadcast channel if the decoder (30) is connected; Determining the presence or absence of the canal signal if the decoder (30) is not connected; Not setting the pay broadcast channel and the free broadcast channel if the canal signal exists; And setting the free broadcast channel only if the canal signal does not exist.