KR19990025410A - Tuning device of a television receiver - Google Patents

Abstract

The present invention relates to a tuning apparatus for a television receiver, which enables a viewer to easily tune into a broadcast channel corresponding thereto using the name of a broadcast station.

In the present invention, the remote controller 6 for adjusting the television receiver is provided with a broadcasting station selection key 66 for displaying the name of the broadcasting station or the characteristics of the broadcasting station. In the television receiver, a predetermined channel memory 9 is provided corresponding to the broadcasting station selection key 66. When the user operates the broadcasting station selection key 66, the control unit 32 reads out the channel data stored corresponding to the broadcasting station selection key 66 from the channel memory 9, thereby operating the tuner 2. It will be a sequential language sequentially.

In addition, the remote controller 6 includes a storage key 67 and an erase key 68 for arbitrarily registering and deleting a broadcast channel with respect to the channel memory 9.

Therefore, in the present invention, the viewer can register a plurality of broadcast channels to one selection key by using the broadcast station selection key 66, the storage key 67, and the clear key 68. By operating the broadcast station selection key 66, it is possible to check the output image of all broadcast channels corresponding to the broadcast station selection key 66.

Description

Tuning device of a television receiver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly, to a tuning apparatus of a television receiver, which enables a viewer to easily tune into a broadcast channel corresponding thereto by using a name of a broadcasting station.

The television receiver detects a predetermined video and audio signal from frequency signals transmitted from each broadcasting station, and outputs it through a CRT (Cathode-ray Tube) and a speaker to provide various programs to viewers. In general, the broadcasting frequency transmitted from a broadcasting station varies its modulation frequency according to each channel so that a viewer can watch a plurality of channel broadcasts without interference. In the television receiver, a channel frequency to be demodulated by mixing different local oscillation frequencies according to broadcasting stations with respect to a broadcasting frequency received through an antenna so as to demodulate a broadcasting signal having a different frequency through a single detection circuit. Is always used to demodulate the signal after converting it into a constant intermediate frequency. Therefore, the television receiver has a configuration for converting the frequency signal of the broadcast channel selected by the viewer into an intermediate frequency signal.

Currently, in a channel tuning apparatus generally employed in a television receiver, a local oscillation circuit for generating a local oscillation frequency corresponding to channel data or a voltage signal, and the local oscillation frequency with respect to a broadcasting frequency received through an antenna. A mixer for mixing is provided, and a channel memory for storing channel data for generating a predetermined local oscillation frequency in accordance with a broadcasting station is provided. At this time, the channel memory stores channel data corresponding to each broadcasting station when the television receiver is manufactured or through a channel search operation, for example, called an auto scan.

In the above-described television receiver, when a predetermined channel broadcast is tuned, the viewer tunes the desired channel broadcast by operating the number key or the channel up / down key of the keypad provided in the main body of the remote controller or the television receiver. . Then, in the television receiver, the processor reads out channel data corresponding to the broadcast channel selected by the viewer from the channel memory, and then controls the local oscillation circuit based on the read data to determine a local oscillation frequency corresponding to the broadcast channel. Will be created. Subsequently, the local oscillation frequency is mixed with a broadcasting frequency signal received through an antenna in a mixer and converted into a predetermined intermediate frequency signal, and the intermediate frequency signal is detected by a detection circuit so that the channel broadcasting designated by the viewer through the CRT and the speaker is performed. Will be output.

In recent years, however, the number of broadcast channels that can be selected by the viewer is rapidly increasing as cable TV and satellite broadcasting are realized. Therefore, as in the prior art, a method for selecting a channel by storing a channel number, that is, a channel number for providing a broadcast program desired by the viewer, becomes increasingly difficult.

In addition, in Korea, the channel frequency is set differently according to each region, so that channel broadcasting provided through A channel in one region is provided through B channel in another region, and in some regions, In some cases, the same channel broadcast can be viewed through A and B channels. In the case of a viewer who resides in such an area, every time the channel is tuned, the viewer selects the channel A and the B channel, and then selects and selects a channel broadcast having high sensitivity.

Accordingly, the present invention has been made in view of the above circumstances, and a main object thereof is to provide a television receiver tuning apparatus that allows a viewer to easily select each channel broadcast based on the name of the broadcasting station.

It is another object of the present invention to provide a tuning device for a television receiver that enables a viewer to easily select each channel broadcast according to the characteristics of the channel broadcast.

1 is a block diagram showing a tuning device for a television receiver according to an embodiment of the present invention.

FIG. 2 is an external perspective view showing an example of key arrangement of the remote controller 6 in FIG.

3 is a block diagram showing a tuning device for a television receiver according to another embodiment of the present invention;

**** Brief description of the main parts of the drawing ****

1 antenna, 2 tuner,

3: IF processor, 4: main IC,

5: CRT driver, 6: remote controller,

7: receiver, 8: OSD generator,

9: channel memory, 10, 32: control unit,

31: Analog-to-digital converter.

A tuning apparatus for a television receiver according to the present invention for realizing the above object comprises a tuner for executing a broadcasting station according to an applied channel data, and processing a broadcast signal selected and output by the tuner and outputting a video signal corresponding thereto. A television receiver having a main IC for outputting an AGC signal for RF amplification of a tuner; A remote controller having a broadcast station selection key indicating the type or characteristic of a broadcast station, and a selection key for registering and deleting a predetermined broadcast channel with respect to the broadcast station selection key; A channel memory having a storage area corresponding to the broadcast station selection key, wherein channel data of a broadcast channel selected by the selection key and the broadcast station selection key is stored corresponding to the broadcast station selection key; A control unit which manages the channel memory according to the operation of the selection key and, when the broadcasting station selection key is selected, reads channel data corresponding to the selected broadcasting station selection key from the channel memory, and sequentially advances the tuner; ; And an OSD generator for displaying the channel number of the broadcast channel tuned by the tuner on the CRT.

According to the present invention having the above-described configuration, when a user operates a broadcast station selection key provided in the remote controller, all broadcast channels corresponding to the broadcast station selection key are sequentially tuned and output on the CRT.

Accordingly, the user can perform channel selection after checking the screen state of the broadcast channel or the program based on the video screen output on the CRT.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.

1 is a block diagram showing a channel selection apparatus of a television receiver according to an embodiment of the present invention.

In Fig. 1, reference numeral 1 is an antenna for receiving a frequency signal transmitted from each broadcasting station, and 2 is a tuner for tuning a predetermined channel broadcast from a broadcasting frequency signal received through this antenna 1. Although the tuner 2 is not specifically illustrated in the drawings, a local oscillation circuit for generating a predetermined local oscillation frequency based on channel data applied from the controller 10 to be described later, and the antenna 1 And a mixer for mixing the local oscillation frequency with respect to the broadcast frequency signal received through the. The frequency signal generated by the mixer is output as an intermediate frequency signal IF.

In the drawing, reference numeral 3 denotes an IF processor which outputs a composite video signal (CV) by amplifying and detecting an intermediate frequency signal IF applied from the tuner 2, and 4 denotes the composite video signal. (CV) processing to output R (Red), G (Green), and B (Blue) signals corresponding to the detected channel broadcast signal, and from the On Screen Display (OSD) generation unit 8 to be described later. The main IC for mixing the applied RGB and OSD blanking signal (Y '), 5 is a CRT driver for driving the CRT based on the RGB signal applied from the main IC (4) to generate a predetermined video screen on the CRT. to be.

In the figure, reference numeral 6 denotes a remote controller for the viewer to remotely control the television receiver. 2 is a view showing the external appearance of the remote controller 6. As shown in Fig. 2, the remote controller 6 has a power key 61 for turning on / off the power of the television receiver and a number key 62 for tuning the channel desired by the viewer, as in the usual case. , Channel and volume up / down keys 63 for sequentially selecting and controlling channels and volumes of the television receiver, direction keys 65 for moving the cursor displayed on the CRT, and menus and functions displayed on the CRT. And an enter key 64 for selecting.

In particular, the remote controller 6 is provided with a so-called broadcast station selection key 66 which displays the name of the broadcast station, the features of the broadcast station, and the like. In FIG. 2, A, B, and C broadcasts are indicated for the broadcast station selection key 66. Here, for example, names of broadcast stations such as KBS1, KBS2, MBC, SBS, or entertainment, sports, drama, etc. Similarly, names indicating characteristics of broadcasting stations in cable TV and the like are indicated. In addition, the number of the broadcasting station selection keys 63 is not limited to three, but is appropriately set.

In FIG. 2, reference numeral 67 denotes a storage key for storing an arbitrary broadcast channel in correspondence with the broadcast station selection key 66, and 68 denotes an arbitrary broadcast channel stored in correspondence with the broadcast station selection key 68. Delete key to delete.

Meanwhile, reference numeral 7 in FIG. 1 denotes a receiver for converting an infrared signal input from the above-described remote controller 6 into an electrical code signal corresponding thereto.

In the drawing, reference numeral 9 denotes a channel memory in which channel data for the tuner 2 is stored, and the channel memory 9 stores channel data corresponding to the broadcast station selection key 68 of the remote controller 6. An area is provided. Of course, although not specifically shown in the figure, in this case as well as a normal channel memory, a storage area for storing channel data corresponding to the number key 62 of the remote controller 6 is provided.

In the drawing, reference numeral 8 denotes an OSD for outputting an RGB signal for visually displaying on the CRT the operation state of the television receiver or the control state of the television receiver by the remote controller 6 under the control of the controller 10. It is a generator.

In the drawing, reference numeral 10 denotes a control unit for controlling the entire apparatus of the television receiver, which is specifically controlled according to the operation of the broadcast station selection key 66 and the storage key 67 and the erase key 68 of the remote controller 6. In addition to managing the channel memory 9, when the user operates the station selection key 66, the viewer controls the tuner 2 based on the channel data stored in the channel memory 9, thereby allowing the viewer to select a broadcast station. To make it easy to run.

In the above configuration, the channel number registration for the channel memory 9 is performed by the user pressing the storage key 67 of the remote controller 6 and then pressing the station selection key 66 to register the corresponding broadcast channel. Is executed.

That is, when the viewer selects the desired broadcast by operating the number key 64 or the channel up / down key 63 of the remote controller 6, the control unit 10 selects the channel number selected by the viewer from the channel memory 9. After reading the channel data corresponding to, the tuner 20 is controlled based on the read channel data to internationalize the broadcast channel desired by the viewer.

On the other hand, if the user presses the broadcast station selection key 66, for example, the A broadcast key after the user presses the storage key 67 of the remote controller 6, the controller 10 selects the tuner by the current tuner 2. The channel data of the channel broadcast is registered in the storage area allocated for the A broadcast in the channel memory 9.

Also, the deletion of specific channel data from the channel memory 9 is executed in the same manner as described above, and after the user tunes the broadcast channel that the user wants to delete by operating the remote controller 6, the remote controller 6 When the erasing key 68 and the broadcasting station selection key 66 are sequentially operated, the control unit 10 is currently tuned from the channel data storage area of the channel memory 9 corresponding to the broadcasting station selection key 66. The channel data of the broadcast channel is deleted.

If the user operates the broadcast station selection key 66 of the remote controller 6 in a state where predetermined channel data is stored in the channel memory 9 by the above-described storing and erasing operation, the controller 10 ) Sequentially reads the channel data from the storage area of the channel memory 9 corresponding to the broadcast station selection key 66 selected by the user at predetermined time intervals, for example, at 3 second intervals, to internationalize the tuner 2. At this time, the controller 10 controls the OSD generator 8 to display the channel number of the broadcast channel tuned by the tuner 2 on the CRT.

That is, for example, when the user operates the A broadcast key of the remote controller 6, the controller 10 first reads the channel data of the channel a from the A broadcast storage area of the channel memory 9, and then based on this. The channel a is internationalized by controlling the tuner 2. Then, after a predetermined time, the channel b of the channel b is read from the channel memory 9 again, and then the channel b is internationalized by controlling the tuner 2 based on this.

Therefore, according to the above embodiment, after the user confirms in advance all the channel broadcasts corresponding to the station selection key 66 by operating the station selection key 66, the signal sensitivity is the best or the one desired by the user. It is possible to tune into a broadcasting channel that is broadcasting a program.

However, in the above-described embodiment, the viewer should check the broadcast channels sequentially output through the CRT, and then use the number key 62 of the remote controller 6 to tune to the broadcast channel having the best signal sensitivity. From the standpoint there is inconvenience.

3 is a block diagram showing a tuning apparatus of a television receiver according to another embodiment of the present invention in consideration of the above circumstances. In addition, the same reference numerals are added to the same components as those in FIG.

In FIG. 3, the tuner 2 is internationalized by identifying a channel having the best signal sensitivity based on an auto gain control signal (AGC) applied from the main IC 4 to the tuner 2. .

That is, in the case of a broadcast frequency signal is generally transmitted through the airwave transmission network, the strength of the received frequency signal is changed according to the state of the transmission network. In addition, when the level of the reception frequency signal is changed in this way, the level of the video and audio signals output through the CRT or the speaker is changed so that the output sound quality or output quality is greatly reduced.

Therefore, in the television receiver, by appropriately amplifying the broadcast frequency signal received based on the level of the signal detected from the broadcast channel frequency, the level of the frequency signal input to the internal circuit is always controlled. This is commonly referred to as automatic gain adjustment, and the AGC signal for automatic gain adjustment is output from the main IC 4 and applied to the tuner 2, and the tuner 2 uses the AGC signal to operate the antenna 1. Amplify the RF signal received through. Since the AGC signal is for flattening the gain of the frequency signal received through the antenna 1, when the level of the RF signal received through the antenna 1 is high and the reception sensitivity is good, the signal level is It is set low and the signal level is set high when the reception sensitivity is poor. Therefore, when the level of the AGC signal is checked, it is possible to confirm the reception state of the channel broadcast tuned by the tuner 2.

In Fig. 3, an analog-to-digital converter 31 is provided to check the level of the AGC signal. The digital data output from the digital-analog converter 31 is supplied to the control unit 32.

In addition, as described with reference to FIG. 1, the control unit 32 reads out channel data sequentially from the channel memory 9 when the user operates the broadcast station selection key 66 to internationalize the tuner 2. In this case, the controller 32 checks the reception state of the broadcast channel tuned by the tuner 2 based on the level data applied from the analog-digital converter 31. When the sequential tuning operation of the broadcast channel is completed, the controller 32 supplies the channel data having the best signal sensitivity to the tuner 2.

Therefore, according to the above embodiment, the viewer can watch the broadcasting channel that he / she wants without the need for a separate key operation, thereby improving the convenience of the viewer.

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical scope of the present invention.

That is, for example, in the above embodiment, when the user operates the broadcast station selection key 66 of the remote controller 6, the control unit 10 or 32 stores the channel data stored in the corresponding area of the channel memory 9. Although the case where the tuner 2 is sequentially internationalized has been described on the basis of the above, in the case of a television receiver having a picture in picture (PIP) function, a broadcast channel registered corresponding to the broadcasting station selection key 66 is displayed on one screen. It is also possible to output simultaneously to the image.

As described above, according to the present invention, it is possible to realize a tuning apparatus of a television receiver, which enables a viewer to easily select each channel broadcast according to the name or characteristic of the broadcasting station.

Claims (2)

A tuner 2 that executes a broadcast station according to the channel data applied thereto, processes a broadcast signal tuned and output by the tuner 2, outputs a video signal corresponding thereto, and RF amplification of the tuner 2. In a television receiver having a main IC (4) for outputting an AGC signal for A remote controller 6 having a broadcasting station selection key 66 indicating a type or characteristic of a broadcasting station, selection keys 67 and 68 for registering and deleting a predetermined broadcasting channel with respect to the broadcasting station selection key; A storage area corresponding to the broadcasting station selection key 66, and the channel data of the broadcasting channel selected by the selecting keys 67 and 68 and the broadcasting station selecting key 66 is stored in correspondence with the broadcasting station selecting key 66; Channel memory (9), The channel memory 9 is managed according to the operation of the selection keys 66, 67, and 68, and when the broadcasting station selection key 66 is selected, channel data corresponding to the selected broadcasting station selection key 66 is stored. A control unit which reads out of the channel memory 9 and sequentially tunes the tuner 2; And a OSD generator (8) for displaying the channel number of the broadcast channel tuned by the tuner (2) on the CRT. The method of claim 1, further comprising an analog-to-digital converter (31) for generating and supplying digital data corresponding to the level of the AGC signal to the controller, wherein the controller is based on the level of the AGC signal. A tuning device for a television receiver, characterized in that the tuner (2) is selected as an international language.