KR0185854B1 - Method of adjusting sound parameters according to contents of tapes in a tvcr - Google Patents

Abstract

The present invention relates to a method for adjusting sound quality by genre in a TVCR, comprising: determining whether an 'auto' key is input for automatic sound quality adjustment (100); Reading 101 a bar code of the VCR tape when the auto key is input; Determining (102) the genre of the program recorded on the VCR tape by the reader barcode data; And setting the sound quality of the currently played program to the sound quality level of the corresponding genre as a result of the determination, so that the sound quality of the program can be automatically set to the sound quality level of the genre according to the genre of the currently played program. It is effective to provide good sound quality to each genre.

Description

How to adjust sound quality by genre in TVCR

1 is a block diagram showing a TVCR to which the present invention is applied.

2 is an external view of a VCR tape having a bar code attached to it according to the present invention.

3 is a view for explaining the PWM output of the microcomputer shown in FIG.

(A) to (d) of FIG. 4 are examples of the PWM output shown in FIG.

5 is a flowchart illustrating a method of controlling sound quality for each genre in a TVCR according to the present invention.

* Explanation of symbols for main parts of the drawings

11: tuner 12: SAW filter

13: video processor 14: audio processor

15: CRT drive unit 16: remote control transmitter

17: remote control receiver 18: micom

19: key matrix 20: memory for micom

30: VCR section 31: A / V switch

32: barcode reader ANT: antenna

SP: Speaker

The present invention relates to a sound quality control method of a television receiver equipped with VSI (hereinafter referred to as TVCR), and in particular, to read a bar code attached to the surface of the VCR tape to identify the genre of the program and then to optimize the sound quality for each genre of the program. It relates to a sound quality adjustment method for each genre to provide.

As is widely known, the TVCR is an integrated television receiver and VCR, allowing users to select and adjust broadcast channels, volume, contrast, and brightness by manipulating a remote control transmitter or key matrix.

Also, the sound quality of TVCR is controlled regardless of the genre according to the size of sound quality control signal such as balance, treble, bass, volume, etc., for example, when watching a video played on any channel or VSI tape. Alternatively, when the viewer adjusts the volume to a specific level according to the taste of the viewer, the volume level is set to be the same in all genres. As such, conventionally, the volume is collectively adjusted to all genres instead of adjusting the volume level for each genre, so if you want to watch at a different volume level according to the genre, the volume is adjusted every time the genre is changed. There was a problem to be done.

In other words, it is necessary to set the sound quality appropriately according to the genre of the program, such as drama, sports, and music program. In the related art, the sound quality is generally adjusted regardless of the genre.

Accordingly, the present invention has been made to solve the above problems and to meet the needs, and after decoding the genre from a VCR tape with a bar code on which the genre information of the program is recorded, the user decodes the genre according to the genre of the program. The purpose is to provide a sound quality control method by genre that can automatically set the sound quality of each.

In order to achieve the above object, the present invention, in the TVCR to be able to adjust the sound quality to a predetermined level according to the genre of the program after decoding the genre information of the program recorded as a bar code on the VCR tape,

Determining whether an 'auto' key is input for automatic sound quality adjustment; Reading a bar code of the VCR tape when the auto key is input; Determining the genre of the program recorded on the VCR tape by the read barcode data; And setting the sound quality of the currently played program to the sound quality level of the corresponding genre.

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

As shown in FIG. 1, the TVCR receiver according to the present invention includes a tuner 11, a SAW filter 12, a video processor 13, an audio processor 14, a speaker SP, and a CRT driving unit 15. , CRT, remote controller transmitter 16, remote controller receiver 17, micom 18, key matrix 19, micom memory 20, VCR unit 30, A / V switch 31, barcode reader ( 32).

In FIG. 1, the tuner 11 receives a radio frequency (RF) broadcast signal from an antenna ANT, and receives an intermediate frequency IF of a channel selected according to a predetermined channel signal CH SEL input from the microcomputer 18. Outputs the signal, and the video processor 13 receives and demodulates the filtered video intermediate frequency (VIF: 45.75 MHz) signal and the audio intermediate frequency (SIF: 41.25 MHz) signal from the SAW filter 12. Extract composite video signal and audio signal, separate vertical and horizontal sync from composite video signal, and output RGB signal by matrix processing composite video signal after Y / C separation.

Such a video processor 13 is implemented as a single chip as is known in the art can be easily purchased on the market, it is intended to perform a variety of functions.

In addition, the audio processor 14 receives the detected audio signal from the video processor 13 and demodulates the first channel (4.5 MHz) audio signal and the second channel (4.72 MHz) audio signal and matrixes the demodulated audio signal. The circuit processes the audio mode and outputs it to the R-channel and L-channel speakers, respectively. At this time, the audio processor 14 detects the pilot signals 149.9 kHz and 176.0 kHz from the pilot carrier (usually 55.1 kHz) and determines whether it is a stereo broadcast or an audio multiplex and controls the matrix circuit.

The microcomputer 18 controls the operation of the system according to the user's control input through the remote control transmitter 16 and the remote control receiver 17 or the user's control input through the key matrix 19. The channel tuning signal CH SEL) to the tuner 11 to select a broadcast channel, and to control image quality control signals such as brightness, contrast, SHARPNESS, COLOR, TINT, etc. 13) to control the image quality, and outputs sound control signals such as volume, treble, bass, balance, etc. to the audio processor 14 to control sound quality. Here, the microcomputer 18 has various registers, ROMs, and RAMs therein, but the memory 20 may be used externally if necessary, and the image quality control signal and the sound control signal may be analog. The control voltage signal is implemented by a PWM output as shown in FIGS. 3 and 4.

That is, FIG. 3 is a diagram for explaining the 8-bit PWM output of the microcomputer shown in FIG. 1, and the microcomputer 18 is internal to the internal PWM register 35 assigned to a predetermined address (for example, 00D016). When data is written through the data bus, the written data is latched into the PWM latch 36 as it is, and the PWM circuit 37 then outputs a predetermined pulse signal in accordance with the latched data. An example of the output of such a PWM circuit is a pulse having a duty ratio of 0/256 to 255/256 in accordance with the latched data value as shown in FIGS. Can be converted to an analog voltage.

That is, (a) of FIG. 4 is '0' when the data of the PWM latch 36 is 16, (b) is '1' when the data of the PWM latch 36 is 116, and (c) Is '24' as the data of the PWM latch 36 is 1816, and (d) is '255' as the data of the PWM latch 36 is FF16. At this time, for example, when the clock of the microcomputer used for PWM is 4 MHz, one period t of one small pulse is 8 ms, and the total period T is 2,048 ms.

In FIG. 1, the VCR unit 30 reproduces the input VCR tape and outputs a composite video signal to the A / V switch 31, or inputs a video signal from the A / V switch 31, as is well known. The A / V switch 31 receives the composite video signal from the video processor, the external A / V input terminal, and the VCR unit, and records the video signal according to the mode control signal of the microcomputer. The bar code reader 32 reads the bar code attached to the surface of the VCR tape inserted into the VCR deck and outputs the read data to the microcomputer 18. That is, when the user selects the TV mode, the A / V switch 31 outputs the tuner A / V received from the video processor 13 to the video processor 13 again, and in the A / V mode, the external A / V input. Outputs the A / V signal input from the terminal to the video processor 13, outputs the A / V signal reproduced by the VCR unit 30 to the video processor 13 in the VCR playback mode, and external A in the VCR recording mode. / V or A / V signal input from the video processor 13 is output to the VCR unit 32.

In describing the components of the TVCR to which the present invention is applied, specific numerical values have been mentioned, but this is merely to make the present invention easier to understand, and the concept of the present invention should not be limitedly interpreted. In addition, since the configuration of the TVCR to which the present invention is applied may have various forms according to the chipset used, the technical idea of the present invention may be applied to any type of TVCR as it is.

Based on such technical understanding, a method of adjusting sound quality for each genre according to the present invention will be described.

As shown in FIG. 5, the method of controlling sound quality by genre according to the present invention includes: determining whether an 'Auto' key is input for automatic sound quality adjustment (100); Reading 101 a bar code of a VCR tape when an autokey is input; Determining (102) the genre of the program recorded on the VCR tape by the read barcode data; And setting the sound quality of the currently played program to the sound quality level of the genre as a result of the determination (103).

The present invention is to provide the user with the appropriate sound quality according to the genre by setting the size of the sound quality level (ie, balance, volume, treble, bass, etc.) to the user's most preferred level for each genre of the program recorded in the VCR. The sound quality level that is optimal for the user should be set for each genre. When the sound quality level is set in this way, the corresponding levels are stored in the memory by genre, and when the program is played on the TVCR, the sound quality level is read from the memory according to the genre and the sound quality of the played program is set.

Referring to FIGS. 1 and 5, the operation of the present invention will be described. First, in order to apply the present invention, a barcode must be attached to a reproduced VCR tape, and the barcode includes genre information about a program recorded on the tape. Should be doing. In addition, genre-specific sound quality control function according to the present invention is to be performed only when the user presses the (Auto) key, the auto key can be easily installed in the remote control transmitter 16 or the key matrix 19, although not shown. have.

When the user sets the sound quality for each genre through the key matrix 19 or the remote control transmitter 16, the user stores the sound quality in the memory, and when the 'auto' key is pressed, the barcode of the VCR tape is read to identify the genre of the played program. After that, the sound quality data of the genre is read and the sound quality is set.

For example, if the sound quality for each genre set by the user is set as shown in Table 1 below, the sound quality is set at the corresponding level according to the genre data recorded on the barcode of the VCR tape.

In other words, if the genre of the currently playing program is 'News', the high quality is 16, the low is 20, the volume is 35, and the balance is 32. If the genre of the currently playing program is 'drama', the high is 25, Set the bass to 24, the volume to 30, and the balance to 32.

As described above, according to the present invention, the sound quality of a program can be automatically set to the sound quality level of the genre according to the genre of the currently played program, so that the user can provide good sound quality for each genre.

Claims (1)

Determining whether the 'auto' key is input for automatic sound quality adjustment in a TVCR that can decode genre information of a program recorded as a bar code on a VCR tape and adjust the sound quality to a predetermined level according to the genre of the program. 100; Reading (101) the barcode of the VCR tape when the autokey is entered; Determining (102) the genre of the program recorded on the VCR tape by the read barcode data; And setting (103) the sound quality of the currently played program to the sound quality level of the corresponding genre as a result of the discrimination.