KR100286316B1 - Melody generation apparatus and method for video system - Google Patents

Abstract

The present invention relates to a technology for generating a melody when a key signal is input from a video device such as a television receiver or when it is usually required for a long time such as at power-on or automatic channel search. In order to control the system so that the corresponding function is performed when the key signal is input from the key signal output means, the melody can be confirmed so as to confirm the key signal input or to reduce the boredom of waiting for the normal screen output. Control means for generating a melody pulse by itself using the corresponding data of the data storage means; Melody data storage means for storing data for melody generation so as to generate each melody; A timer unit for counting pulses of a predetermined frequency in order to generate an interrupt signal required for generating the melody pulse and an interrupt signal required for setting the sound length; It includes a waveform shaping means for receiving the square wave-type sound signal output from the control means to form a sinusoidal-type sound signal and output to the amplifier side.

Description

MELODY GENERATION APPARATUS AND METHOD FOR VIDEO SYSTEM}

The present invention relates to a technology for generating a melody in a video device such as a television receiver, and in particular, while generating a melody corresponding to a key signal input without using a separate sound source element or performing a corresponding function according to a key command. The present invention relates to an apparatus and method for generating a melody of a video device suitable for generating the same.

In a conventional video apparatus, when each key signal is input by a user, the user may perform a corresponding function simply without taking any special action of informing that the key signal is input.

In addition, in a video device such as a television receiver, even if it takes a relatively long time to perform a given command such as automatic channel search, only a search function is performed without consideration for the user.

As such, the conventional video apparatus does not include a function for checking whether a key signal is input by the user, which may cause the user to be mistaken for a malfunction of the remote controller or the main body, and performs automatic channel searching. In the case of being idle for a relatively long time there is a defect that feels free.

Accordingly, the technical problem to be achieved by the present invention is to generate a unique melody corresponding to the input key when the key signal is input by the user and to wait for a relatively long time such as automatic channel search or power on / off. The present invention provides a melody generating device and method for generating a long melody, but in this case, the controller generates the melody by itself without using a separate sound source element.

1 is an exemplary block diagram of a melody generating device according to the present invention.

2 is a signal flowchart of a method of generating a melody of a video device according to the present invention;

*** Description of the symbols for the main parts of the drawings ***

1: remote control 2: sound generator

2A: input interface unit 2B: control unit

2C: Melody Data Storage 2D: Divider

2E: Timer section 2F: Output interface section

3: waveform shaping part 4: mixing part

5: amplifier SP: speaker

1 is a block diagram illustrating an embodiment of a melody generating apparatus of an imaging apparatus for achieving the object of the present invention. As shown in FIG. 1, a remote controller 1 for outputting various control key signals as an infrared code according to a user's request; ; An input interface unit 2A for transmitting the key signal input from the remote controller 1 to the control unit 2B and an output interface unit 2F for transmitting the output signal of the control unit 2B to the waveform shaping unit 3 side. Wow; Melody data for outputting the melody assigned to the key or outputting the melody upon power on, off or automatic channel search so as to check the key signal input through the input interface unit 2A and confirm the key input. A control unit 2B for reading the corresponding data from the storage unit 2C and generating a square wave-shaped melody pulse by using the timer unit 2E; A melody data storage unit 2C storing unit sound data and sound length data of the melody so as to generate each melody; A timer unit 2E for counting an output signal of the frequency divider 2D to generate an interrupt signal required for generating the melody pulse and an interrupt signal required for setting the sound length; A waveform shaping unit 3 for receiving a square wave-type sound signal output from the sound generator 2 and shaping the sinusoidal-type sound signal; A mixing unit 4 for mixing the sound signal output from the waveform shaping unit 3 and the TV sound signal AU _TV output from the TV sound signal processing unit; An amplifier (5) for amplifying the sound signal output from the mixing section (4) to an appropriate level and outputting it to the speaker (SP) side; The oscillator 6 is configured to supply an oscillation clock signal of a predetermined frequency to the divider 2D.

In addition, the method of generating a melody of a video device to achieve the object of the present invention is that if the key signal is input to determine whether the key signal is set to generate a melody to determine that the key signal is not the corresponding function Performing steps (S1-S3); If the inputted key signal is found to be a keyed signal that is set to generate a melody, reading the corresponding melody data from a melody data storage unit and setting a pulse generation value and a sound length time (S4-S5); Generating a square wave-shaped melody pulse using the interrupt signal input from the timer unit by the setting and shaping the melody pulse (S6 and S7).

When described in detail with reference to the accompanying drawings the operation of the present invention configured as described above are as follows.

When a user wants to select a function of a television receiver as an example of a video device, a corresponding key signal is output by using an operation switch or a remote controller 1 provided in the main body.

The controller 2B of the sound generator 2 recognizes the input key signal and controls each part of the system to perform a corresponding function. For example, when the channel up / down key signal is input, the tuner outputs tuning data to tune the channel, and when the volume up / down key signal is input, the voice signal processing unit is controlled to set the corresponding volume.

In this case, the controller 2B checks whether the input key signal is a preset key signal, that is, a key signal set in advance to accompany the melody generation, and performs the following processing to generate the melody when the condition is established. Here, it should be noted that the melody is generated by itself using the timer unit 2E without using a separate sound source element.

In the above description, "the key pre-set to accompany the melody generation" refers to a key set by the user using the remote controller 1 in advance. If necessary, only a few keys are set or only melody is set for all keys. Can be set to occur.

For example, for a key for checking only whether a key signal is input or not, a melody such as “ding” or “ding dong” is generated when the key signal is inputted, and a relatively long time such as power on or automatic channel search. If you have to wait for a while, you can set a relatively long melody, such as instrumental music.

In order to generate the melody, the control unit 2B reads the melody data stored in the melody data storage unit 2C and generates a melody pulse in the timer for generating the unit sound pulse of the timer unit 2E. The generation data value TM is set, and the timer for controlling the sound length is enabled.

In this way, whenever the interrupt signal is input from the unit sound pulse generation timer, the control unit 2B checks the sound pulse currently being output to its output port. High "and the length of the sound is set using the interrupt signal input from the sound length control timer.

For example, since the frequency of the "degree" sound in the scale is 261.63 Hz, if you want to generate the melody of the sound, a square wave pulse having a frequency of 261.63 Hz may be generated. The oscillation frequency of the oscillator 6 is 8 MHz, The case where the divider 2D is a 16 divider will be described.

A frequency signal of 500 KHz (8 MHz × 1/16 = 500 KHz) is output from the divider 12D, and the timer unit 12E twice a square wave pulse, that is, a square wave to be generated by the controller 12B. The interrupt signal must be supplied at the rising edge and falling edge of the pulse, respectively. Thus, the pulse generation data value for the "degree" note Becomes

The generated square wave pulse is low-pass filtered by the waveform shaping unit 3 and converted into a sine wave-shaped pulse, which is amplified to an appropriate level through the mixing unit 4 and the amplifier 5 and then output to the speaker SP side. .

Accordingly, it is possible to generate various melodies without using a sound source integrated device.

In this case, a short melody such as “ding” or “ding dong” is generated when the user wants to be able to confirm whether the key signal is input simply. In the case of power-on or automatic channel search, a relatively long melody is generated. While the normal screen is output, the melody is stopped.

As described in detail above, when the key signal is input, the present invention generates a unique melody corresponding to the input key and generates a long melody when waiting for a relatively long time such as automatic channel search or power on / off. In this case, it is possible to generate a melody in the control unit without using a separate sound source element, thereby providing a confirmation function without causing an increase in cost and reducing the boredom.

Claims (7)

Control means for controlling the system to perform a corresponding function when the key signal is input from the key signal output means, and generating a melody pulse by itself using the corresponding data of the melody data storage means; Melody data storage means for storing data for melody generation so as to generate each melody; A timer unit for counting pulses of a predetermined frequency in order to generate an interrupt signal required for generating the melody pulse and an interrupt signal required for setting the sound length; And a waveform shaping means for receiving a square wave-type sound signal outputted from the control means, shaping the sinusoidal-type sound signal and outputting it to an amplifier. The melody generating apparatus of a video apparatus according to claim 1, wherein the control means comprises a microcomputer. Checking whether the input key signal is a key signal which is set to generate a melody, and performing a corresponding function if it is determined that the key signal is not the key signal; A second step of setting a pulse generation value and a sound length time by reading corresponding melody data from a melody data storage unit when the inputted key signal is found to be a key signal set to generate a melody; And a third step of generating a square wave-shaped melody pulse using the interrupt signal input from the timer unit by the setting and shaping the melody pulse. The method of claim 3, further comprising determining whether to output a single tone melody or a light music melody based on the input key signal. 5. The method of claim 4, wherein the melody in the form of a single tone is intended to simply confirm that a key signal has been input. 6. The method of claim 4, wherein the output of the instrumental melody is a case where a power-on key signal is input. The method of claim 4, wherein the output of the instrumental melody is a case where an automatic channel search key signal is input.