KR20000024806A - Apparatus of processing correction signal of convergence and method of controlling the same - Google Patents

Abstract

PURPOSE: An apparatus of processing a correction signal of convergence is provided to decrease error occurrences by establishing a Master-Slave structure of a main controller and a convergence controller. CONSTITUTION: An apparatus of processing a correction signal of convergence comprises: a remote controller for amplifying a signal generated according to key signals controlling a various states of a screen, service functions and a convergence, and transmitting a converted infrared signal corresponding to the amplified signal; a receiver for amplifying the infrared signal transmitted from the remote controller and converting the amplified signal to a digital signal corresponding to the amplified signal; a main controller for performing a corresponding control signal after comparing determined data with the signal output from the receiver and deciding whether the signal from the receiver is a convergence-related control signal; a convergence controller for converting a convergence align signal by an interrupt control signal from the main controller to RGB horizontal and vertical convergence data; a converting/amplifying element for converting and amplifying the RGB data output from the convergence controller to analog signals; and R,G & B cathode-ray tubes and a display for deflecting and displaying an electronic beam of the R,G & B video signals according to the convergence correction signal of the convergence controller.

Description

Convergence correction signal processing device and control method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection TV receiver, and more particularly, to an apparatus and method for controlling a convergence correction signal for processing convergence control IR (Infrared) signals provided from a remote controller.

In general, a projected image indicator is basically provided with three cathode ray tubes, R, G, and B.

These R, G and B cathode ray tubes display images of R, G and B respectively, and the images displayed on the cathode ray tube are enlarged through an optical unit composed of a plurality of reflectors and objective lenses and displayed on a large screen. You can watch the big screen.

When receiving a video signal broadcast from a broadcasting station and displaying it on a cathode ray tube or displaying a video signal reproduced by an image reproducing device on a cathode ray tube, the green electron gun in the center of the RGB electron gun of the television receiver is the central axis of the cathode ray tube. Although the red and blue electron guns on the left and right sides are installed inclined slightly inward with respect to the central axis, a lot of noise is displayed on the upper and lower parts of the screen and on the left and right sides. By using the values, each screen of RGB is distorted as much as possible.

However, in practice, the convergence of the RGB cathode ray tube is changed due to the assembly error and the geomagnetism of the cathode ray tube. Therefore, it is necessary to correct the convergence of the cathode ray tube by applying a magnetic field from the outside using a positive convergence magnet.

1 is a schematic block diagram showing a control signal processing apparatus according to the prior art, which includes a remote controller 1, a receiver 3, a main controller 5, and a convergence controller 7.

The remote controller 1 includes a plurality of key matrix switches 1a for selecting and setting various screen states, channels, and service functions, and amplifying signals generated according to selection of the key switches 1a and corresponding infrared rays. It consists of the transmission part 1b which converts into an (IR) signal, and sends out.

In addition, the receiver 3 is configured to receive, amplify and convert an infrared signal transmitted from the transmitter 1b into a digital signal corresponding thereto, and the main controller 5 provides a signal output from the receiver 3. It is configured to determine whether it is a signal of its own region and then perform a control operation corresponding thereto. The convergence controller 7 receives a signal output from the receiver 3 to determine whether it is a signal of its own region and then controls correspondingly. It is configured to perform an operation.

That is, the television receiver including the convergence controller 7 in the set has a structure in which the main controller 5 and the convergence controller 7 share a signal transmitted from the remote controller 1, The controllers 5 and 7 responded independently to the remote control signal.

Accordingly, when the IR mode and the convergence adjustment mode are confused with each other, for example, when the convergence adjustment complete key signal is input during the convergence data processing in the convergence adjustment mode, the main controller 5 recognizes that the data is not data in the magnetic domain. Ignoring the post-input signal, the convergence controller 7 cannot accept other signals from the outside during data processing, resulting in an unreasonable problem such as when the convergence controller 7 remains in the adjustment mode as it is.

An object of the present invention is to install a main controller and a converged controller in a master-slave structure receiving a remote controller signal in a set having a built-in convergence controller, thereby processing the transmission signal in one direction to reduce the error occurrence rate when adjusting convergence. The present invention provides a convergence correction signal control apparatus and a method thereof.

In order to achieve the above object, the apparatus of the present invention comprises: remote control means for amplifying a signal generated according to a key signal for adjusting various screen states, service functions, and convergence, converting the signal into an infrared signal corresponding thereto, and transmitting the same; A receiving unit which receives the infrared signal transmitted from the remote control means, amplifies and converts the infrared signal into a digital signal corresponding thereto; A main controller which receives the signal output from the receiver and compares it with preset data to determine whether the control signal is convergence related and then performs a control operation corresponding thereto; A convergence control unit which receives a convergence correction signal according to the interrupt control signal output from the main control unit and converts the convergence correction signal into RGB horizontal and vertical convergence data; Conversion and amplifying means for converting and amplifying the RGB horizontal and vertical convergence correction data output from the convergence control unit into analog signals, respectively; And R, G, and B cathode ray tubes and displays for deflecting and displaying electron beams of R, G, and B video signals according to the convergence correction signal of the convergence control unit.

In order to achieve the above object, the control method of the present invention comprises the steps of: initializing time and clock count values and data stored in a data buffer; Determining whether an interrupt enable signal for starting transmission of convergence correction data is input from the main controller; Determining whether the clock signal is transmitted from the main controller when the enable signal is input in the above; Receiving and storing convergence correction data according to the clock signal when the clock signal is transmitted, and counting the transmitted clock signal; Checking whether the counted clock signal is equal to or greater than a predetermined number, and counting time to determine whether the set time has elapsed; If the set time has not elapsed, receiving convergence correction data according to a clock signal, and continuously counting the clock signals to determine whether the number of clock signals is greater than or equal to a preset number; And when the number of clock signals received in the process of determining the number of clocks is greater than a predetermined number, generating a control signal corresponding to the received data to adjust horizontal and vertical convergence of R, G, and B cathode ray tubes. Correcting.

Another control method of the present invention for achieving the above object comprises the steps of initializing the time and clock count value and the data stored in the data buffer; Determining whether an interrupt clock signal for starting the transfer of convergence correction data has been input from the main controller; Receiving and storing convergence correction data according to the clock signal when the clock signal is input, and counting the input clock signal; Determining whether the counted clock signal is equal to or larger than a predetermined number; If the number of clock signals transmitted in the step is smaller than a predetermined number, determining whether a predetermined time has elapsed by counting a predetermined time; Receiving convergence correction data according to a clock signal and continuously counting clock signals to determine whether the number of clock signals is greater than or equal to a preset number if the time set in the above has not elapsed; And when the number of clock signals received from the main controller is greater than a predetermined number in the determining of the number of clock signals, generating a control signal corresponding to the received data to generate horizontal, horizontal, Correcting the vertical convergence.

1 is a schematic block diagram showing a convergence control signal processing apparatus of a conventional projection TV,

2 is a schematic block diagram showing an apparatus for processing convergence control signals according to an embodiment of the present invention;

3 is an embodiment illustrating a control method of a main controller and a convergence controller of FIG. 2;

FIG. 4 is another embodiment illustrating a method of controlling the main controller and the convergence controller of FIG. 2.

Explanation of symbols on the main parts of the drawings

10: remote controller 20: receiver 25: main controller

30: convergence controller 35: amplifier

40: display part 41-43: RGB cathode ray tube

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

2 is a block diagram showing a convergence correction signal processing apparatus according to an embodiment of the present invention, the remote controller 10, the receiver 20, the main controller 25, the convergence controller 30, the amplifier 35 and The display unit 40 is included.

The remote controller 10 may include a plurality of key matrix switches 10a for selecting and setting various screen states, channels, and service functions, and amplifying signals generated according to selection of the key switches 10a and corresponding infrared rays. It consists of the transmission part 10b which converts into an (IR) signal, and sends out.

In addition, the receiver 20 is configured to receive and amplify the infrared signal transmitted from the remote controller 10 and convert it into a digital signal corresponding thereto, and the main controller 25 provides a signal output from the receiver 20. It is configured to determine whether it is a control signal related to convergence by comparing with the preset data, and performs a control operation corresponding thereto, and the convergence controller 30 performs the convergence correction data according to the control signal output from the main controller 25. After receiving and processing the signal is configured to output the RGB horizontal, vertical convergence correction signal, the amplifier 35 is the RGB horizontal, vertical convergence correction data (RHC, RVC; GHC, GVC) output from the convergence controller 30 BHC and BVC) are converted into analog signals and amplified respectively.

The display unit 40 also displays R, G, and B cathode ray tubes 41, 42, and 43 for deflecting and displaying electron beams of R, G, and B video signals according to the convergence correction signal of the convergence controller 30. And a screen 44 in which an image displayed on the cathode ray tubes 41, 42, and 43 is enlarged and displayed through an optical unit (not shown).

By configuring the main controller 25 and the convergence controller 30 in a master-slave relationship as described above, data communication and processing between the two controllers 25 and 30 are possible to perform the convergence control operation reasonably. Although it is simple to use I ² C BUS communication like other hardware chips, it is difficult to apply I ² C communication due to the signal processing speed of the controller used in the convergence controller 30. However, if the signal processing speed of the convergence controller 30 is upgraded to the speed of the main controller 25, I ² C communication may be applied.

3 is a flowchart illustrating a communication method between the main controller 25 and the convergence controller 30. The communication controller between the main controller 25 and the convergence controller 30 includes three communication ports (enable signal, clock signal, and data). Signal transmission port).

First, the convergence controller 30 initializes the time, the clock count value, and the data stored in the data buffer to '0' (S1).

In the initialized state S1, the convergence controller 30 determines whether an interrupt enable signal for starting transfer of the convergence correction data from the main controller 25 has been input (S2).

When the enable signal is input in S2, the convergence controller 30 determines whether the clock signal is transmitted from the main controller 25, that is, whether the clock signal has transitioned from 0 to 1 (S3).

When the clock signal is transmitted in S3, the convergence controller 30 receives and stores the convergence correction data according to the clock signal, and counts the transmitted clock signal (S4).

The convergence controller 30 determines whether the counted clock signal is equal to or larger than a predetermined number (S5).

When the number of clock signals transmitted in the process S5 is smaller than the predetermined number, the convergence controller 30 counts a predetermined time to determine whether a predetermined time has elapsed (S6).

If the predetermined time has not elapsed in step S6, receiving convergence correction data according to a clock signal, continuously counting clock signals to determine whether the number of clock signals is greater than or equal to a predetermined number (S4, S5). Will be executed again.

If the number of clock signals received by the convergence controller 30 is greater than a preset number in the process of performing the re-execution (S4, S5), a control signal corresponding to the received data is generated to generate R, G, and B cathode rays. The horizontal and vertical convergence of the pipes 41, 42, 43 are corrected (S7).

On the other hand, in the process of determining whether a predetermined time has elapsed after counting the clock signal (S6), if a predetermined number of clock signals are not input even after a predetermined time elapses, it is determined that the data transmission error is the initialization process (S1). To start again.

After the enable signal is transmitted from the main controller 25, if the clock signal is not transmitted even after a predetermined time count (S8) has elapsed, the controller waits for the enable signal.

4 is a flowchart illustrating a communication method of the main controller 25 and the convergence controller 30, in which two communication ports between the main controller 25 and the convergence controller 30 are provided (signal transmission ports such as clock signals and data). One case will be described by way of example.

First, the convergence controller 30 initializes the time, the clock count value, and the data stored in the data buffer to '0' (S11).

In the initialized state S11, the convergence controller 30 determines whether a clock signal for starting transfer of the convergence correction data is input from the main controller 25 (S12).

When the clock signal is transmitted in S12, the convergence controller 30 receives and stores the convergence correction data according to the clock signal, and counts the transmitted clock signal (S13).

The convergence controller 30 determines whether the clock signal counted in step S13 is equal to or larger than a predetermined number (S14).

If the number of clock signals transmitted in the step S14 is smaller than the predetermined number, the convergence controller 30 counts a predetermined time to determine whether a predetermined time has elapsed (S15).

If a predetermined time has not elapsed in step S15, receiving convergence correction data according to a clock signal, continuously counting clock signals, and determining whether the number of clock signals is greater than or equal to a predetermined number (S13 and S14). Will be executed again.

If the number of clock signals received by the convergence controller 30 is greater than a preset number in the process of performing the re-execution (S13, S14), a control signal corresponding to the received data is generated to generate R, G, and B cathode rays. The horizontal and vertical convergence of the pipes 41, 42 and 43 are corrected (S16).

In the process of determining whether a predetermined time has elapsed after counting the clock signal (S15), if a predetermined number of clock signals are not input even after a predetermined time elapses, the clock signal is determined to be a data transmission error and the initialization process (S11). To start again.

The number of clock signals to be transmitted from the main controller 25 in the operation of FIGS. 3 and 4 is preset in the memory 31 inside the convergence controller 30, and the number thereof is eight and eight clocks. The signal is used to generate data for convergence correction.

As described above, in the present invention, the main controller and the convergence controller are configured in a predominant structure, thereby reducing an error occurrence rate such as entering or completing the convergence adjustment mode even during the operation of the adjustment mode of the convergence controller.

Claims (5)

Remote control means for amplifying a signal generated according to a key signal for adjusting various screen states, service functions, and convergence, converting the signal into an infrared signal corresponding thereto, and transmitting the same; A receiving unit which receives the infrared signal transmitted from the remote control means, amplifies and converts the infrared signal into a digital signal corresponding thereto; A main controller which receives the signal output from the receiver and compares it with preset data to determine whether the control signal is convergence related and then performs a control operation corresponding thereto; A convergence control unit which receives a convergence correction signal according to the interrupt control signal output from the main control unit and converts the convergence correction signal into RGB horizontal and vertical convergence data; Conversion and amplifying means for converting and amplifying the RGB horizontal and vertical convergence correction data output from the convergence control unit into analog signals, respectively; And And an R, G, and B cathode ray tube and a display unit for deflecting and displaying electron beams of R, G, and B video signals according to the convergence correction signal of the convergence control unit. Initializing time and clock count values and data stored in the data buffer; Determining whether an interrupt enable signal for starting transmission of convergence correction data is input from the main controller; Determining whether the clock signal is transmitted from the main controller when the enable signal is input in the above; Receiving and storing convergence correction data according to the clock signal when the clock signal is transmitted, and counting the transmitted clock signal; Checking whether the counted clock signal is equal to or greater than a predetermined number, and counting time to determine whether the set time has elapsed; If the set time has not elapsed, receiving convergence correction data according to a clock signal, and continuously counting the clock signals to determine whether the number of clock signals is greater than or equal to a preset number; And In the process of determining the number of clocks, if the number of clock signals received is greater than a preset number, a corresponding control signal is generated according to the received data to correct horizontal and vertical convergence of R, G and B cathode ray tubes. Convergence correction signal control method comprising the step of. The method of claim 2, In the step of determining whether the set time has elapsed after counting the clock signal, if the clock signal is not input as many as the preset number even after the set time has elapsed, it is determined as a data transmission error to determine the time, clock count value, and data buffer. Convergence correction signal control method characterized in that to perform again from the initializing step. Initializing time and clock count values and data stored in the data buffer; Determining whether an interrupt clock signal for starting the transfer of convergence correction data has been input from the main controller; Receiving and storing convergence correction data according to the clock signal when the clock signal is input, and counting the input clock signal; Determining whether the counted clock signal is equal to or larger than a predetermined number; If the number of clock signals transmitted in the step is smaller than a predetermined number, determining whether a predetermined time has elapsed by counting a predetermined time; Receiving convergence correction data according to a clock signal and continuously counting clock signals to determine whether the number of clock signals is greater than or equal to a preset number if the time set in the above has not elapsed; And In the determining of the number of clock signals, if the number of clock signals received from the main controller is greater than a predetermined number, a control signal corresponding to the received data is generated to generate horizontal and vertical R, G and B cathode ray tubes. And a step of correcting convergence. The method of claim 4, wherein In the step of determining whether the set time has elapsed after counting the clock signal, if the clock signal is not input as many as the preset number even after the set time has elapsed, it is determined that the data transmission error is to be performed again from the initializing step. A method for controlling convergence correction signals, characterized by the above-mentioned.