KR19980046449A - Channel setting control device by area code of television - Google Patents

Abstract

According to the present invention, when searching for an automatic channel required for a short selection operation of a broadcasting channel in a television, only the broadcasting channel assigned according to the region code of the region in which the television is located can be searched for and set as a broadcasting channel. A channel setting control device is provided.

Accordingly, according to the present invention, the tuner 4 performs the automatic channel search by sequentially tuning the broadcasting channels of the VHF low / high band and the UHF band, and the automatic frequency adjustment of the television broadcasting signal through the image IF unit 6. A television having an AFT circuit (8) for supplying the generated AFT signal to the tuner (4) side, comprising: function setting means (14) for keying in an area code of a region in which the television is located in an automatic channel setting mode; Allocating a broadcast channel receivable by each area code, the channel data storage means 16 storing band data and channel tuning data for the assigned broadcast channel, to the function setting means 14 under execution of the automatic channel setting mode. Processing data storage means (18) for storing band data and channel tuning data of a broadcast channel obtained as a result of automatic channel search of only the broadcast channel assigned to the area code inputted by the program; The channel data and the channel tuning data of the broadcast channel assigned to the area code inputted in the automatic channel setting mode by the step 14 are read from the channel data storage means 16, so that the automatic channel search through the tuner 4 is performed. Control means 20 for setting a broadcast channel according to an automatic channel search result by the AFT signal of the AFT circuit 8, and an area code under an automatic channel setting mode under the control of the control means 20; And display signal processing means (22, 24) for generating display information for screen display of a specified state.

Description

Channel setting control device by area code of television

The present invention relates to a channel setting control apparatus based on an area code of a television. More particularly, the present invention relates to a channel setting control apparatus according to an area code (DDD) according to a corresponding area when a broadcasting channel is set up by a channel search of a television. The present invention relates to a channel setting control apparatus according to an area code of a television, which enables channel searching and setting only assigned broadcasting channels.

In general, in a television for reproducing a predetermined channel among a plurality of broadcasting channels transmitted from a plurality of television broadcasting stations and reproducing it through a CRT screen and a speaker through video / audio signal processing, a remote control for a remote control or a control panel of a main body are generally provided. By inputting the channel number of each broadcast channel by the 10-key operation, the selected broadcast channel can be tuned.

On the other hand, in order to alleviate the inconvenience that the user has to input the channel number of the broadcasting channel at the time of switching the broadcasting channel in the television, the automatic channel search function automatically spreads the VHF low band, the VHF high band and the UHF band. The search operation is executed sequentially so that only the broadcast channel is set as the tuning channel, and the band data and channel tuning data for each broadcast channel are stored in a predetermined channel memory means, thereby controlling the remote control or the control panel of the main body. In accordance with the up / down operation state of the channel shortening selection key consisting of up / down keys provided separately, the set broadcasting channel is short-selected to enable fast tuning.

However, in the channel setting operation by the automatic channel search function in such a television, since the channel bands allocated by the television broadcasting stations are designated differently for each region where the television is located, a clear broadcast screen is made according to each region through the automatic channel search operation. In order to search for a broadcasting channel that provides a channel, 64 channel bands ranging from the VHF low band through the VHF high band to the UHF band must be sequentially searched, so that channel setting time by channel search takes a long time. .

Accordingly, the present invention has been made in view of the above circumstances, and when searching for an automatic channel required for a shortened selection operation of a broadcast channel in a television, only the broadcast channel allocated according to the area code of the region where the television is located is limited to broadcast. An object of the present invention is to provide a channel setting control apparatus based on an area code of a television that can be set as a channel.

In order to achieve the above object, according to the apparatus for controlling channel setting according to the area code of a television according to the present invention, a tuner for automatically channel searching by sequentially tuning a broadcasting channel of a VHF low / high band and a UHF band, and an image IF A television having an AFT circuit for supplying an AFT signal generated by automatic frequency adjustment of a television broadcast signal through a negative signal to the tuner, wherein the function setting for keying in the area code of the region where the television is located in the automatic channel setting mode is performed. Means for allocating a broadcast channel receivable by each area code, the channel data storage means storing band data and channel tuning data for the assigned broadcast channel, inputted by the function setting means under execution of the automatic channel setting mode. Band data and channel of broadcasting channel obtained from automatic channel search result of broadcasting channel assigned to area code Processing data storage means for storing channel selection data, and band data and channel tuning data of a broadcasting channel allocated to an area code inputted under the automatic channel setting mode by the function setting means from the channel data storage means and read through the tuner. Control means for performing automatic channel search, and setting a broadcast channel according to the result of automatic channel search by the AFT signal of the AFT circuit, and a state in which the area code is designated under the automatic channel setting mode under the control of the control means. Provided is a channel setting control apparatus according to an area code of a television, comprising display signal processing means for generating display information for display.

According to the present invention configured as described above, when an area code, ie, a DDD number of a region in which the television is located, is input at the time of the automatic channel search function for a plurality of broadcasting channels in a television, the broadcasting is allocated according to the corresponding DDD number. By searching only a channel and setting a broadcast channel by a limited channel search, a faster channel search function can be realized.

1 is a block diagram showing a channel setting control apparatus according to an area code of a television according to the present invention;

2A and 2B are diagrams illustrating an example in which a state in which an area code is input to set broadcast channels for each area according to a preferred embodiment of the present invention is displayed on a screen;

3 is a flowchart illustrating the operation according to the preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: receiving antenna, 4: tuner,

6: Image IF unit, 8: AFT circuit,

10: video amplification unit, 12: video signal processing unit,

14: function setting section, 16: channel data memory,

18: processing data memory, 20: control unit,

22: OSD signal processor, 24: signal converter.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a channel setting control apparatus according to an area code of a television according to the present invention. In the apparatus of the present invention, reference numeral 4 denotes the execution of the automatic channel search function of the control unit 20, which will be described later. By receiving band data (VL, VH, U) and channel tuning data (VT) for sequential tuning of a plurality of channels, the RF signals of the broadcasting channel induced in the reception antenna 2 are sequentially tuned and the channel tuning data ( A tuner which mixes with a local oscillation frequency signal generated by VT) and outputs it as an intermediate frequency signal of 58.75 MHz, receives an AFT signal from the AFT circuit 8 described later, and finely adjusts the intermediate frequency signal.

In addition, reference numeral 6 denotes an image IF unit for intermediate-frequency amplifying the television broadcast signal tuned through the tuner 4, and 8 denotes an oscillation so as to detect a local oscillation frequency of the tuner 4 to obtain an accurate intermediate frequency signal. AFT circuit that generates AFT (Automatic Fine Tuning) signal for frequency correction.

Reference numeral 10 amplifies the video signal of the intermediate frequency amplified television broadcast to an amplification level capable of signal processing, distributes the signal to a synchronization circuit or amplification circuit, corrects a transmission time of a color signal and a luminance signal, and The image amplification unit is responsible for compensating the mid and high frequency characteristics.

Further, reference numeral 12 separates the signal-amplified video signal into a luminance signal and a color difference signal, synthesizes the composite video signal through luminance adjustment processing and color demodulation processing, and outputs the same. And a video signal processor for inserting and outputting the OSD display signal into the composite video signal.

Reference numeral 14 is composed of a matrix button unit provided in a predetermined portion of a remote controller for remote control or the main body of the main body, and the function setting operation for performing fine adjustment of the broadcast channel or function setting operation for setting the broadcast channel for each region according to the automatic channel search function. As a function, a function execution key 14A for setting a key for a normal automatic channel search function, a fine adjustment function of a broadcast blade, or a function for setting a broadcast channel for each region, and a selection for selection of an automatic channel search function are selected. It comprises a key 14B.

Also, reference numeral 16 denotes a channel data memory in which band data (VL, VH, U) and channel tuning data (VT) of broadcasting channels allocated by region code, that is, DDD number, are stored. A processing data memory in which band data (VL, VH, U) and channel tuning data (VT) of a broadcast channel set as a result of executing the automatic channel search function is stored.

Reference numeral 20 denotes band data (VL, VH, U) and channel selection of a broadcast channel allocated to the input area code (DDD number) according to the execution of the automatic channel search function for each area by the function setting unit 14. The data VT is read from the channel data memory 16 to be sequentially tuned through the tuner 4, and the broadcasting channel searched by the AFT signal from the AFT circuit 8 is broadcasted. A control unit for storing the band data (VL, VH, U) and channel tuning data (VT) accordingly, is set in the processing data memory 18.

Here, the control unit 20 prevents channel selection from being performed for broadcast channels other than the broadcast channel assigned to the area code (D.D.D number).

Reference numeral 22 displays a selection state of a normal automatic channel search function, a fine tuning function of a broadcast channel, or a regional channel search function by a key operation of the function setting unit 14 under display control of the control unit 20. An OSD signal processor for generating OSD display information for display is shown, and 24 denotes a signal converter for analog converting the generated OSD display information data and outputting the same to the image signal processor 12.

Here, when the function execution key 14A of the function setting unit 14 is operated by the OSD signal processor 22, as shown in FIG. 2A, for example, an automatic setting item for executing a normal automatic channel search function ( 26), the fine adjustment item 28 for fine tuning of the broadcast channel, and the automatic zone setting item 30 for executing the automatic channel search function for each zone of the broadcast channel are displayed on the screen, and the function setting unit 14 is displayed. When the automatic zone setting item 30 is designated by the key operation of FIG. 2B, display characters for inputting the area code (DDD number) are displayed on the screen as shown in FIG. 2B.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG.

First, in step 40, it is determined whether or not the function execution key 14A of the function setting unit 14 performs key operation for executing the automatic channel search function.

If it is determined in step 40 that the function execution key 14A of the function setting unit 14 is not being operated, the control proceeds to step 41 and the 10-key provided in the function setting unit 14 is performed. The band data VL, VH, U and channel tuning data VT of the corresponding channel number are read from the channel data memory 16 and applied to the tuner 4 by inputting the channel number. The broadcast channel is tuned to allow broadcast reproduction.

On the other hand, if it is determined that the function execution key 14A of the function setting unit 14 is being operated as a result of the determination in step 40, then control proceeds to step 42 by displaying and controlling the OSD signal processing unit 22. As shown in FIG. 2A, the automatic setting item 26 for executing the normal automatic channel searching function, the fine adjusting item 28 for fine tuning of the broadcasting channel, and the execution of the automatic channel searching function for each region of the broadcasting channel are performed. Local automatic setting item 30 for the screen is displayed.

In that state, the flow advances to step 43 to determine whether the automatic setting item 26 is selected by the key operation of the selection key 14B and the function execution key 14A of the function setting unit 14, and If it is determined that the automatic setting item 26 is being set, control proceeds to step 44 so that the automatic channel searching function is executed for all broadcast channels across the VHF low / high band and the UHF band.

However, as a result of the determination in step 43, the automatic setting item 26 is not set by the key operation of the selection key 14B and the function execution key 14A of the function setting unit 14, and the process proceeds to step 45 and fine. If it is determined that the adjustment item 28 is set, in step 46, the control unit 20 enables fine adjustment of the broadcast channel by the AFT circuit 8.

In addition, in step 45, the fine adjustment item 28 is not set by the key operation of the selection key 14B and the function execution key 14A of the function setting unit 14, and as a result of step 47, automatic zone setting is performed. If it is determined that the item 30 has been set, then control proceeds to step 48 whereby the OSD signal processing unit 22 displays and controls the area code (DDD number) of the region where the television is located, as shown in FIG. 2B. The input request status is displayed on the screen.

In this state, when the area code (DDD number) of the area where the television is located is inputted in step 49, the control unit 20 controls the broadcasting channel allocated to the input area code from the channel data memory 16. Band data VL, VH, U and channel tuning data VT are read out to be sequentially tuned through the tuner 4, and a band of a broadcasting channel obtained by the AFT operation by the AFT circuit 8 The data VL, VH and U and the channel tuning data VT are stored in the processing data memory 18.

After the processing operations of steps 44, 46, and 49, the process proceeds to step 50, and the control unit 20 determines whether sequential tuning for the entire broadcast channel is completed.

As a result of the determination in step 50, if it is determined that the tuning for the broadcast channel according to the normal automatic channel search function, fine tuning function or automatic channel search function for each region sequentially selected by the tuner 4 is completed, the control is performed. In step 51, the band data (VL, VH, U) and channel tuning data (VT) of the broadcast channel obtained according to the channel search result are finally stored in the processing data memory 18.

According to the present invention made as described above, by inputting the area code (DDD number) in the television, it is possible to search only the channel assigned according to the area of the area code, thereby providing a faster channel search function. This has the advantage of being achievable.

Claims (2)

A tuner 4 which performs automatic channel search by sequentially tuning the broadcast channels of the VHF low / high band and the UHF band, and the AFT signal generated by the automatic frequency adjustment for the television broadcast signal through the image IF unit 6 In a television equipped with an AFT circuit 8 for supplying to the tuner 4 side, Function setting means (14) for keying in the area code of the area where the television is located in the automatic channel setting mode; A channel data storage means (16) for allocating a broadcast channel receivable by each area code and storing band data and channel tuning data for the allocated broadcast channel; Processing data storage means for storing band data and channel tuning data of a broadcast channel obtained as a result of automatic channel search of only the broadcast channel assigned to the area code input by the function setting means 14 under execution of the automatic channel setting mode ( 18), The band data and channel tuning data of the broadcast channel assigned to the area code inputted in the automatic channel setting mode by the function setting means 14 are read out from the channel data storing means 16, and automatically transmitted through the tuner 4. Control means 20 for channel search and setting a broadcast channel according to an automatic channel search result by the AFT signal of the AFT circuit 8; Area of a television, characterized in that it comprises display signal processing means (22, 24) for generating display information for screen display of a state in which an area code is designated under the control of the control means (20). Channel setting control device by number. The apparatus of claim 1, wherein the area code inputted by the function setting means (14) corresponds to a D.D.D phone number of each area.