KR950014334B1 - Channel information store method & apparatus in tv/hdtv - Google Patents

Abstract

a key inputting part for generating an input key signal in response to a key press by a user; a tuner for outputting a signal from one of television broadcasting channels having the conventional television broadcasting channel and a high definition television broadcasting channel; a synchronization detecting part for generating a first synchronous detection signal to show a synchronization detection according to the conventional television broadcasting system, and a second synchronous detection signal to show the synchronization detection according to the high definition television broadcasting system; a memory having an additional channel information storage area according to conventional television broadcasting system and the high definition television broadcasting system; and a controlling unit for controlling the tuner and the memory in order to check which one is the signal of the selected television broadcasting system among signals outputted from the conventional and high definition television broadcasting systems, and in order to store the channel information to be used for the selective control in the channel information storage area.

Description

Method for separately storing channel information according to existing / high definition television broadcasting method and receiving apparatus using the method

1 is a block diagram showing an apparatus for separately storing channel information according to television broadcasting schemes according to an exemplary embodiment of the present invention.

2 is a detailed circuit diagram of a second synchronous detector of the FIG. 1 apparatus.

3 is a flow chart for explaining the operation of the microcomputer of the first FIG.

* Explanation of symbols for main parts of the drawings

11: tuner 12,13: demodulator

14,15 synchronous detector 16: micom

17: skip memory 18: display unit

19: Keymetrics SR: Shift Register

NOR: Negative Logic Gate

The present invention relates to a method for separately storing channel information in accordance with television broadcasting methods and a receiving apparatus using the method. In particular, whether a broadcasting method of a received channel is a conventional television broadcasting method, a high definition television The present invention relates to a method and apparatus for determining a separate channel storage area according to a broadcasting method by determining whether the broadcasting system is a broadcasting system, and distinguishing the stored channel information from the existing television system and a high definition television (HDTV) system. .

In general, there is a compatibility between the conventional television broadcasting system and the high-definition television (HDTV) broadcasting system (Compatibi1-ity). That is, a conventional television receiver receives and displays a high definition television signal, or a high definition television receiver receives and displays a conventional television signal. In order to be able to receive a conventional television signal to a high definition television receiver, a high definition television signal is transmitted through one television channel, and another television channel transmits the same program as an existing television signal. In the case of a television, a skip memory used internally for general home appliances is stored by an effective channel number. For example, if the channel up key is pressed while the current receiving channel is "7", the television channel is changed to "9" which is not a channel "8" by channel information stored in the skip memory. Is changed. When storing a television channel in such a skin memory, it is necessary to separately store a channel of a high definition television system and a channel of a conventional television system.

Accordingly, an object of the present invention is to provide a method for providing convenience for a user in selecting a channel by storing the existing television broadcasting system and the high definition television broadcasting system in different areas of the skip memory.

Another object of the present invention is to provide a receiving apparatus using a method of separately storing channel information according to an existing high definition television broadcasting method.

In order to achieve the above object of the present invention, a channel storing method for a television receiving apparatus having compatibility with a conventional television broadcasting system and a high definition television broadcasting system is configured to generate an input key signal in response to a user's key press. In the first step of reflecting, the second step of performing a tuning operation on the television broadcasting signal based on the input key signal generated in the first step, and the broadcasting method of the signal of the channel tuned by performing the second step. A third step of detecting which of the existing television broadcasting system and the high definition television broadcasting system; and the third step of the existing separate channel information storage areas for each of the existing television broadcasting system and the high definition television broadcasting system. A fourth step of storing channel information of the channel tuned by the second step in a channel information storage area corresponding to the broadcasting method detected by the second step; It includes.

In order to achieve the above object of the present invention, a television receiving apparatus having compatibility with a conventional television broadcasting system and a high definition television broadcasting system includes a key input unit for generating an input key signal in response to a user's key press. A tuner that selects one of the television broadcasting channels and outputs a signal of the tuned channel; a first synchronous detection signal and a high definition television broadcast indicating synchronization detection according to a conventional television broadcasting method by receiving an output signal of the tuner; Synchronous detection means for generating a second synchronous detection signal indicative of the synchronous detection according to the scheme, a memory having separate channel information storage areas according to the conventional television broadcasting scheme and the high definition television broadcasting scheme, and generated by the key input unit. In response to an input key signal, based on a control operation of the tuner and a synchronous detection signal of the synchronous detection means The operation of determining whether the signal of the selected telecast vision broadcasting channel is a signal according to a conventional broadcasting method or a high definition television broadcasting method, and the channel information storage area corresponding to the television broadcasting method according to the determination result. And control means for performing an operation of controlling the memory to store channel information of a channel used for an international language of a tudor.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an apparatus for separately storing channel information according to television broadcasting schemes according to an exemplary embodiment of the present invention. The apparatus of FIG. 1 includes: a tudor 11 for tuning a desired broadcast station channel according to the frequency of a received radio wave, first and second demodulators 12, 13 for demodulating a signal of a channel tuned by the tudor 11; First and second synchronous detectors 14 and 15 and first and second synchronous detectors outputting the synchronous detection signals SD1 and SD2 by applying the demodulated signals from the first and second demodulators 12 and 13. Control operation of storing the channel line international language and channel information of the tuned channel by receiving the synchronization detection signals SD1 and SD2 from the signals 14 and 15 and the input key signal Skey from the key metrics 19. A display unit for storing a microcomputer 16, a channel memory (D band) supplied from the microcomputer 16, or a skip memory 17 for outputting the stored channel information Dc " 18. The above-described key metrics 19 are key metrics or television receivers or video frames on a remote control (not shown). This can be key metrics on the control panel on the recorder.

In FIG. 1, the microcomputer 16 responding to the input key signal Skey generated by the key metrics 19 is a chip for activating the international language signal DS, the clock signal CLK, and the tuner 11. The enable signal (巨) is supplied to the tuner 11. The tuner 11 simultaneously outputs a signal of a channel tuned by the international language signal Ds to the first and second demodulators 12 and 13 from radio waves coming through the antenna 10. The first demodulator 12 demodulates and outputs the input signal according to the existing television broadcasting system, and demodulates and outputs the input signal to the second demodulator 13 according to the high definition television broadcasting system. The first synchronous detector 14 generates a first synchronous detection signal SDl indicating whether the synchronous signal has been detected from the output signal of the first demodulator 12, and outputs it to the microcomputer 16. The second synchronous detector 15 ) Generates a second synchronization detection signal SD2 indicating whether a synchronization signal has been detected from the output signal of the second demodulator 13 and outputs it to the microcomputer 16. Since a technique for detecting a synchronization signal according to the conventional television broadcasting method is known, a detailed description thereof will be omitted. Referring to FIG. 2, the generation of the second synchronization detection signal SD2 by the second synchronization detector 15 will be described below.

FIG. 2 shows a detailed circuit diagram of the second synchronous detector 15 of FIG. The second synchronous detector 15 of FIG. 2 is an apparatus for outputting the synchronous detection signal SD2 of the television signal according to the high definition television system as described above. According to the demodulation method of the high-definition television broadcast system, the signal demodulated by the second demodulator 13 is applied to the second motion detector 15. Here, the second demodulator 13 is a high-definition television type demodulator which restores the received signal to data before being modulated at the transmitting side, and outputs a demodulated signal in the form of a data bit string. The shift register SR in the second synchronous detector 15 latches the applied data bit string by a predetermined number of bits. Each bit value of the data bit string latched in the shift register SR is supplied to each of the exclusive ORs. In FIG. 2, an exclusive ogate is indicated by the symbol "○". Each of the exclusive ogates is connected to receive one bit value of Sync. Pattern data preset according to a high definition television broadcasting method. Each of these exclusive orgates performs a corresponding negative logic sum of the bit value of each digit bit of the data stored in the shift register SR and the sync pattern data, and outputs a second synchronous detection signal SD2 indicating the result. For example, when the preset synchronization pattern data is "11100000", when the data bit string latched in the shift register SR is "11100000", the NOR gate NOR detects the second synchronization whose value is "1". Output the signal SD2. Here, the value "r" of the second synchronous detection signal SD2 means that the signal according to the high definition television broadcasting system has been tuned by the tuner 11. Therefore, the microcomputer 16 has the synchronous detection signal whose value is "r. It is understood that the broadcast signal of the television signal corresponding to the tuner 11 has been tuned. Therefore, the microcomputer 16 can determine the television broadcasting method for the received television signal based on the values of the synchronization detection signals SD1 and SD2 output from the synchronization detectors 14 and 15, respectively.

Returning to the description of FIG. 1 again, the microcomputer 16 is driven by the current tuner 11 in accordance with the synchronous detection signal SD1 or SD2 applied from one of the first synchronous detector 14 and the second synchronous detector 15. It is determined whether the selected channel signal is a signal based on a conventional television broadcasting method or a signal according to a high definition television broadcasting method. The microcomputer 16 transmits the channel information (D) corresponding to the channel number used in the international language of the tuner 11 to one of the different storage areas of the skip memory 17 based on the determined television broadcasting method. Save it. Therefore, the skip memory 17 stores channel information in a form distinguished from each other according to a television broadcasting method. Since the clock signal CLK and the enable signal CEl applied to the skip memory from the microcomputer 16 are well known to those skilled in the art, detailed operation descriptions thereof will be omitted.

When an input key signal for adding a channel is applied through the key metrics 19, the microcomputer 16 sends the channel information of the channel tuned by the tuner 11 to the channel information in the skip memory 17 corresponding to the corresponding broadcasting method. Save the storage area. When an input key signal for deleting channel information stored in the skip memory 17 is applied through the key metrics 19, the microcomputer 16 may store the corresponding channel stored in the corresponding storage area of the skip memory 17 by the input key signal. Delete the information. In addition, when an input key signal for automatically searching and tuning broadcast channels through the key metrics 19 is applied, the microcomputer 16 sequentially tunes the entire television broadcast channels according to a preset channel tuning sequence to perform channel tuning. The tuner 11 is controlled so as to operate in the corresponding storage area of the skip memory 17 based on the synchronous detection signal SD1 or SD2 output from the first synchronous detector 14 or the second synchronous detector 15 at that time. Each of channel information of the channel tuned by the tuner 11 is stored. When an input key signal for displaying the stored channel information through the key metrics 19 is applied, the microcomputer 16 reads the channel information stored in each storage area of the skip memory 17 and then reads the existing channel information. Whether the channel information according to the television broadcasting method and the channel information according to the high-definition television broadcasting system so as to distinguish the display. Table 1 shows an example in which channel information according to a conventional television broadcasting method and channel information according to a high definition television broadcasting method are stored in different skip memories 17.

TABLE 1

The above-described operation of the microcomputer 16 operating in response to the input key signal will be described in more detail with reference to FIG. 3 as follows.

When an input key signal by the key metrics 1g is applied to the microcomputer 16, a determination operation of whether the input key signal is a Preset key signal is performed (step 101). Here, the preset key signal is for preventing the change of the set information, for example, when the channel is set by a child or an unknown person when the user sets the channel with difficulty. It is to prevent. This preset key signal is generated by pressing an attached toggle key of the toggle method on the key matrix 19. If the preset key signal is applied, the microcomputer 16 determines whether the stored preset value is "r (step l02), where the preset value" r is the storage, retrieval, and deletion of channel information described below. , And means a preset mode in which a display is performed, and a preset value "0" means that the preset mode is not performed. If the preset value is " r " in step 102, i.e., if the preset key signal is applied in the preset mode, the microcomputer 16 changes the preset value to " 0 " (step 103), indicating the preset mode. Is turned off (step 104), and then step 101 is performed again, and if the preset value is not r in step 102, i.e., when the preset key signal is applied in a state other than the preset mode, The micom 16 changes the preset value to " r (step 105) and turns on the preset mode display (step 106). If the preset key signal is not applied in step 101, the micom ( 16 determines whether the stored preset value is "r" (step 107). If the preset value is not " r, the preset mode is changed to the OFF state, and the steps after step 101 are performed. If the preset value is " r " in step 107, the microcomputer 16 returns the input key signal. It is determined whether the channel add key signal is applied (step 108). When the channel add key signal is applied, the microcomputer 16 determines the tuner (based on the output signals of the first and second synchronous detectors 14 and 15). In step 109, it is determined whether the channel information corresponding to the channel selected by step 11 corresponds to the existing television broadcasting system. If it is determined in the existing method in step 109, the microcomputer 16 further stores the channel information of the channel currently tuned by the tuner 11 in the storage area for storing the conventional channel information of the skip memory 17. In order to control the skip memory 17 (step 110), the controller 18 controls the display unit 18 to display the channel addition mode. If it is determined in step 109 that it is not the conventional method, the microcomputer 16 adds the channel information of the channel currently tuned by the tuner 11 to the storage area for storing the high quality channel information of the skip memory 17. The skip memory 17 is controlled to be stored (step 111), and the display unit 18 is controlled to display the channel addition mode state (step 112).

If it is determined in step 108 that the channel addition signal is not applied, the microcomputer 16 determines whether a channel erase key signal is applied (step 113). When the channel deletion key signal is applied, the microcomputer 16 determines whether the channel information to be deleted from the skip memory 17 corresponds to the existing method (step 114). If it is the existing method in step 1l4, the microcomputer 16 skips to delete the channel information for the channel currently tuned by the tuner 11 among the channel information stored in the existing method channel storage area of the skip memory 17. The memory 17 is controlled (step 115), and the display unit 18 is controlled to display the channel deletion mode state (step 117). If it is determined in step 114 that the channel to be deleted is not a conventional channel, the microcomputer 16 selects the channel currently tuned by the tuner 11 among the channel information stored in the high definition channel storage area of the skip memory 17. The skip memory 17 is controlled to delete the channel information for (step 116) and the display unit 18 is controlled (step 117) to disc play the channel deletion mode. Then, the process is performed after step 101 again. .

If the channel deletion key signal is not applied in step 113, the microcomputer 16 determines whether a channel search key signal is applied (step 118), and if it is determined that the channel search key signal is applied in step 118. , The microcomputer 16 performs the tuner 11 to perform the channel information storage operation of the auto-tuned and the tuned channel for each of the channels for the conventional television system and the channels for the high-definition television system according to the preset channel tuning sequence. And the skip memory 17 are controlled. First, the microcomputer 16 determines whether the channel tuned by the current tuner 11 is a conventional channel based on the output signals of the synchronization detectors 14 and 15 (step 119). If the channel is a conventional channel, the microcomputer 16 stores the channel information of the channel currently tuned by the tuner 11 in the existing channel storage area of the skip memory 17 (step 120), and selects a channel of the next channel. Supplies the pre-international language signal Ds to the tuner 11 (step 123), and controls the display unit 18 to display that the channel search mode is in operation (step 124). If it is determined that the tuned channel is not a conventional channel, the microcomputer 16 determines again whether the channel currently tuned by the tuner 11 is the high definition channel (step 121). In step 121, it is again determined whether the channel is a high definition channel (step 121). If the channel is the high-definition channel in step 121, the microcomputer 16 stores the channel information of the tuned current channel in the high-definition channel storage area of the skip memory 17 (step 122), and performs steps 123 and 124 again. If it is determined that the result of performing steps 119 and 121 is not the result, the microcomputer 16 determines that the channel currently tuned by the tuner 11 is not an effective channel for television broadcasting and performs step 123 and later.

If it is determined that the search key signal is not applied as a result of performing step 118, the microcomputer 16 determines whether the display key signal is applied (step 125). If it is determined in step 125 that the display key signal is applied, the microcomputer 16 reads the channel information stored in the skip memory 17 to skip the existing channel information and the high definition channel information to display the skip memory. (17) and the display unit 18 are controlled (step 126). If it is determined that the display key signal is not applied, the microcomputer 16 determines whether the current operation mode is the channel search mode (step 127). If the channel search mode is being performed in step 127, steps after step 119 are performed. If the channel search mode is not running, the microcomputer 16 determines whether the current performance mode is the channel display mode.

(Step 128). If it is not during the channel display, only after 101 is performed. If the channel display is in progress, the microcomputer 16 determines whether the direction key signal is applied (step 129). When the direction key signal is applied, the micom l6 moves the cursor in the direction corresponding to the direction key signal currently input (step 130), and when the direction key signal is not applied, an enter key signal for user selection of the channel selection channel. It is determined whether is authorized (step 13l). When the enter key signal is applied, the microcomputer 16 outputs the line international language signal Ds based on the channel information corresponding to the current cursor position to the tuner 11 (step 132).

As described above, the receiver for separately storing the channel information according to the present invention according to the existing / high-definition television broadcasting system, the user by separating the existing channel and the channel of the high-definition system into a separate area of the skin memory It facilitates the channel selection of the existing method and the high quality method. In addition, it is possible to provide the convenience of channel selection, which allows a user to tune into a channel having a high definition mode for the same program to watch a program with good image quality. Moreover, it is expected to be widely used in industrial applications because it can be applied not only to television sets but also to devices such as video cassette recorders (VCRs).

Claims (11)

A television receiver having compatibility with a conventional television broadcasting system and a high definition television broadcasting system, comprising: a key input unit generating an input key signal in response to a user's key press, and a conventional television broadcasting channel and a high definition television broadcasting system A tuner which tunes one of the television broadcasting channels including the channel channel and outputs a signal of the channel selected, a first synchronous detection signal indicating synchronization detection according to the conventional television broadcast system by receiving the output signal of the tuner; Synchronous detection means for generating a second synchronous detection signal indicative of synchronous detection according to the high definition television broadcasting system, a memory having separate channel information storage areas according to the existing television broadcasting system and the high definition television broadcasting system, and the key input unit The control operation of the tuner in response to the input key signal generated by the Determining operation of whether the selected television broadcasting channel signal is a signal according to the existing television broadcasting system or a high definition television broadcasting system based on the synchronous detection signal of the output means, and corresponding to the television broadcasting system according to the determination result. And control means for controlling the memory to store channel information of a channel used for the international language of the tuner in the channel information storage area. The demodulation unit according to claim 1, wherein the synchronization detecting unit demodulates the signal output from the tuner according to a demodulation method corresponding to a conventional television broadcasting system and a high definition television broadcasting system, and a signal demodulated by the demodulation unit. And a synchronous detection unit for outputting a synchronous detection signal in accordance with one of the television broadcasting systems in the field. 3. The demodulator of claim 2, wherein the demodulator comprises a first demodulator for demodulating and outputting a signal from the tuner according to a conventional television broadcasting system, and a second demodulator for demodulating and outputting a signal from the tuner according to a high definition television broadcasting system. Television receiving device comprising a. 4. The first and second demodulators of claim 3, wherein the synchronous detection unit outputs a first synchronous detection signal based on detection of a synchronous signal according to a conventional television broadcasting system from an output signal of the first demodulator. And a second synchronous detector for outputting a second synchronous detection signal based on detection of a synchronous signal according to the high definition television system from the output signal. 5. The synchronization register as claimed in claim 4, wherein the second synchronous detector stores a signal output from the second demodulator in the form of a digital data bit string, a bit value stored in each digit of the shift register, and a preset synchronization pattern. A plurality of exclusive orgates for exclusive OR operation of respective corresponding digits of data; and a negation logic gate for negating and logically outputting the output values of the exclusive ore gates and outputting the second synchronous detection signal. Device. A method for storing a channel selection for a television receiver having compatibility with a conventional television broadcasting system and a high definition television broadcasting system, the first step of generating an input key signal in response to a user's key press: in a first stage A second step of performing a tuning operation on the television broadcast signal based on the generated input key signal; A third step of detecting whether the broadcast method of the channel signal selected by the second step is a conventional television broadcast method or a high-definition television broadcast method; And tuning to the channel information storage area corresponding to the broadcasting method detected by the third step among preset separate channel information storage areas for each of the existing television broadcasting method and the high definition television broadcasting method. And a fourth step of storing channel information of the channel. 7. The method of claim 6, wherein if an input signal for additionally storing channel information of the channel currently tuned by the second step is stored in the previously stored channel information, the channel of the currently tuned channel is generated. And storing channel information of the currently tuned channel in a channel information storage area corresponding to a broadcasting method based on the detection result of the third step for the signal. 7. The method of claim 6, wherein when an input key signal for deleting channel information of a channel currently tuned by the second step is generated by the first step, among the channel information stored by the fourth step, And deleting the channel information of the selected channel from the corresponding channel information storage area. 7. The method of claim 6, wherein when an input key signal for automatically searching, tuning, and storing broadcast channels is generated in the first step, the second channel is assigned to each of the broadcast channels according to a preset channel selection order between broadcast channels. And repeating performing the third and fourth steps. The method according to claim 6, wherein when an input key signal for displaying the broadcasting channel information stored in the first step is generated, the broadcasting channel information stored in the channel information storage areas is a conventional television broadcasting method or a high definition television broadcasting method. And displaying the recognition in a form that can be distinguished. According to claim 1, According to the control of the control means in response to the input key signal for displaying the channel information stored in the memory, the channel information stored in the memory and the conventional television broadcasting channel and high-definition television broadcast system And a display unit for displaying the channels separately from each other.