KR20000004025A - Method of recording an image with a user's selecting quality on a tvcr - Google Patents

Abstract

The present invention relates to a user-selectable quality recording method of a TVCR in which a user adjusts a screen to a desired preference at the time of recording a TVCR. The user can select the quality of the TVCR, which displays the recorded tape playback screen with the image quality selected by the user. It is.

Description

How to record user-selected quality of TV

The present invention relates to a method for recording picture quality choosed by user on TVCR, in which a user adjusts a screen to a desired preference at the time of recording a TVCR.

In general, the TVCR is made of a TV (TELEVISION) and VCR (VIDEO CASSETTE RECORDER) as an integrated unit, and the system and the entire system of the TVCR (SYSTEM CONTROL; SYSCON) that is powered by a single power supply and controls the VCR. Each component is operated by the controlling timer (TIMER), and is used for recording and playing back TV broadcast signals, recording and playing back other recording tapes, broadcasting recording of other channels that are not watched, scheduled recording, and absent recording. In the case of recording on a recording tape, an AC bias method with low noise is adopted since there is no residual magnetic field due to a bias magnetic field even in the absence of a signal at present, and the recording of an audio signal has a frequency range of 20-20000 Hz. The AC bias method is performed because it is relatively narrow to a degree and does not have to be a problem in phase relations. However, the frequency modulation (FM) recording method has been adopted for recording video signals because its frequency range is wide, about 0-4 MHz, and strict phase characteristics are required to faithfully reproduce waveforms.

In contrast, during reproduction, the recorded magnetic tape is driven while connecting to the gap of the magnetic head, and the signal read by the magnetic head is amplified and processed and reproduced through the CRT and the speaker.

In the TVCR as described above, there is a problem in that the user cannot watch the recording tape with the desired image quality because the user records most of the desired programs without recording.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a user of a TVCR to be recorded by adjusting the screen to the desired quality at the time of recording so that the user can display the desired quality when watching the recording tape It is to provide a selective image recording method.

1 is a block diagram illustrating a user-selected quality recording method of a TVCR.

2 is a flowchart illustrating a user-selected quality recording method of a TVCR.

<Description of the symbols for the main parts of the drawings>

10: antenna 15: high frequency amplifier

20: mixing unit 25: local oscillation unit

30: Tuner part 35: CRT

40: TV image processing IC 45: VCR Y / C IC

50: head amplifier IC 55: video head

60: remote controller 65: timer

70: synchronization detector 75: ciscon

80; integrator

Hereinafter will be described the configuration and operation of the embodiment for achieving the object of the present invention.

According to the present invention, a high frequency amplifier (15) for amplifying a high frequency signal, which is a composite video signal received from the antenna (10), a local oscillator (25) for supplying a signal for frequency conversion, and the high frequency amplifier (15). The mixing unit 20 receives the local oscillation frequency from the amplified input signal and the local oscillator 25 and converts the intermediate oscillation frequency into an intermediate frequency, and the high frequency amplifier 15, the local oscillator 25, and the mixing unit 20. And amplifying and processing a tuner unit 30 for selecting a high frequency signal of a channel desired by a user and converting it into an intermediate frequency, and an intermediate frequency signal, which is a composite video signal applied from the tuner unit 30, and outputting it to the CRT 35. On the other hand, while outputting a composite video signal to the VCR Y / C IC 45 to be described later, and receives a playback composite video signal from the VCR Y / C IC 45, and outputs it to the CRT (35), User uses remote controller 60 for screen adjustment TV image processing IC 40 for changing the image quality such as brightness, contrast, color, etc. to be adjusted, and the composite image signal is applied from the TV image processing IC 40, and the luminance signal is modulated by the FM low carrier and the color signal is low range. The TV image processing is performed on the playback composite video signal generated by demodulating the modulated luminance signal and the color signal output from the head amplifier IC 50 connected to the VCR Y / C IC 45 to the original signal. While amplifying the VCR Y / C IC 45 applied to the IC 40, the luminance signal and the color signal modulated from the VCR Y / C IC 45, and recording them on the video head 55, An integrator connected to the head amplifier IC 50 for reading, amplifying, and demodulating the signal recorded in the video head 55, the tuner unit 30, and the TV image processing IC 40. In addition to receiving the synchronization signal (C-SYNC) from the (80), the user's remote controller (60) A timer 65 for applying a control signal to the TV image processing IC 40 and controlling the sheath 75 according to a signal applied through the operation, and a VCR Y / C IC 45 connected to the synchronization signal ( A synchronous detection unit 70 for detecting and outputting the C-SYNC to the sheath cone 75 and the integrator 80, and receiving the synchronous signal from the synchronous detection unit 70 to control the VCR Y / C IC 45. And an integrator 80 for integrating the synchronization signal applied from the synchronization detection unit 70 and outputting the integrated signal to the timer 65.

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

1 is a block diagram illustrating a user-selected quality recording method of a TVCR.

Referring to FIG. 1, first, the main method of receiving a broadcast signal using the tuner unit 30 is the FS (FREQUENCY SYNTHESIZE) method, and the FS method uses a timer. If a user inputs a reference frequency corresponding to each channel in advance and the user selects a broadcast channel, the tuner unit 30 can receive the broadcast by transmitting the reference frequency of the corresponding channel as data. Here, the components of the tuner unit 30 will be described in more detail. The high frequency signal received from the antenna 10 is characterized by the characteristic impedance of the feeder FEEDER through an input circuit (not shown) of the tuner unit 30. The input impedances of the high frequency amplifier 15 are matched and output to the high frequency amplifier 15, and the high frequency amplifier 15 increases the gain of the received high frequency signal, improves selectivity, and prevents image disturbance. . In addition, the S / N ratio is improved, and the local oscillation frequency output from the local oscillator 25 is prevented from being radiated to the antenna 10 to affect other receivers. In addition, the signal amplified by the high frequency amplifier 15 and the frequency output from the local oscillator 25 is input to the mixing unit 20, the mixing unit 20 mixes the high frequency signal and the local oscillation frequency To generate an intermediate frequency corresponding to the difference between the two frequencies.

In addition, the intermediate frequency signal, which is a composite video signal output from the tuner unit 30, is applied to the TV image processing IC 40, and the TV image processing IC 40 is applied to the composite video signal applied from the tuner unit 30. Is processed to be output to the CRT 35 and is applied to the VCR Y / C IC 45 that controls the operation of the VCR, and receives a playback composite video signal from the VCR Y / C IC 45. Output to the CRT 35 is made.

The VCR Y / C IC 45 receives a composite video signal from the TV image processing IC 40 according to a control signal of the scissor 75 to be described later in the recording mode, and converts the luminance signal into an FM low carrier. In addition, the color signal is low-pass converted, and then output to the video head 55 through the head amplifier IC 50 to be recorded on the video tape, while in the playback mode the signal read by the video head 55 in the head amplifier IC A demodulated luminance signal and a low-converted color signal that are received through the signal 50 are demodulated into the original luminance signal and the color signal, and then a playback composite video signal is generated and output to the TV image processing IC 40 to generate a CRT. Display on (35).

The synchronous detection unit 70 is connected to the VCR Y / C IC 45 to detect a VCR synchronous signal C-SYNC mixed in the video signal output from the VCR Y / C IC 45, and then pulses. The signal is converted into a signal form and output to the scissor 75 and the integrator 80 to be described later. The integrator 80 receives the sync signal from the sync detector 70 and integrates the signal to the timer 65 to be described later. do. Here, the sheath cone 75 receives the synchronous signal from the synchronous detection unit 70 to control the VCR Y / C IC 45, and performs a cooperative operation with a timer 65 to be described later.

Hereinafter, the operation of the sheath cone 75 will be described in detail.

The ciscon 75 serves as a relay between the user and the VCR set, and receives the synchronization signal from the synchronization detection unit 70 and modulates and demodulates the luminance signal and the color signal in the VCR Y / C IC 45. The control signal, and senses an electrical signal corresponding to a button of the remote controller 60 switched by the user, and applies a driving signal to each part constituting the VCR so that the VCR can operate according to a function operated by the user. The operation state of the VCR set is controlled so that the contents recorded on the Cassette Tape are not damaged. In addition, the sheath cone 75 controls the AC power supplied through the power cord by a power control signal, drives the loading motor to take out and inserts the cassette, and performs an operation. The loading mechanism is driven by sensing the state of the corresponding deck DECK to control the deck mechanism. Also, it detects the beginning and the end of the recording tape to adjust the progress of the tape, and detects the rotation of the reel (not shown and reel) to check the progress of the recording tape, which is generated from the reel sensor (not shown and the reel sensor). If the pulse is not detected within a certain period of time, the system automatically switches to the stop mode, and the humidity in the VCR set is increased so that the humidity in the set is increased by using the DEW SENSOR to prevent damage to the running tape. When the temperature rises above a certain value, the system automatically switches to the stop mode to protect the recording tape.The system detects a 30MHz signal generated by the drum (not shown and DRUM) rotating at a constant speed. To perform a sensing function such as switching to the stop mode. In order to perform a function such as a reservation recording, a timer 65 to be described later and data corresponding to the reservation recording are transmitted and authorized by serial data processing.

Here, the operation of the timer 65 for controlling the overall operation of the TV image processing IC 40 and the system by receiving the synchronization signal through the integrator 80 will be described in detail.

First, the pulse type synchronization signal is input from the integrator 80 to detect a normal broadcast signal application state, and then a control signal is applied to the TV image processing IC 40 to allow the VCR Y / C IC 45 to operate. The playback composite video signal output from the CRT 35 is reproduced normally through the CRT 35. In addition, by comparing the button that the user has switched the remote controller 60 with a predetermined code to perform a function corresponding to the button, it is possible to set and change the time using the clock (CLOCK) function, By using the clock function, the system transmits data with the sheath 75 during the scheduled recording and sets the recording start time and the recording end time to automatically record the current deck state or the sheath ( It detects the operation state of 75) to be displayed on the display unit mounted on the TVCR system using the LED.

In addition, the head amplifier IC 50 connected to the VCR Y / C IC 45 mixes the FM-modulated luminance signal and the low-pass converted color signal output from the VCR Y / C IC 45 and amplifies about 60 dB. While recording to the video head 55, the signal extracted from the tape by the video head 55 is further amplified by 60 dB to demodulate the original luminance signal and the color signal.

In addition to the general operation of the present invention described above with reference to the accompanying drawings, the present invention user-selected quality recording method as follows.

2 is a flowchart for explaining a user-selected quality recording method of a TVCR.

Referring to FIG. 2, the user turns on the VCR using the remote controller 60 for recording (S100).

When the VCR is turned on in step S100, the user selects a screen adjustment mode using the remote controller 60 (S200).

When the screen adjustment mode is selected in step S200, the user inputs a desired picture quality to the remote controller 60 to implement a desired picture quality (S300).

When the desired image quality is input in step S300, the timer 65 receives the input image quality information and controls the TV image processing IC 40 to change the image quality according to the image quality information (S400).

When the image quality is adjusted in step S400, the user applies a recording button using the remote controller 60, and the VCR proceeds with recording (S500).

Through all the above processes, the user-selected quality recording method of the TVCR is implemented as the present invention intends.

As can be seen from the above description, the present invention adjusts the screen to the desired quality at the time of recording so that the user can display the desired quality when the recording tape is viewed so that the recorded video can be recorded by the user himself. There is an effect that you can appreciate.

Claims (2)

In the user-selected image quality recording method of a TVCR in which a television and a video reproducing apparatus (VCR) are integrally formed, A VCR on process (S100) in which the user turns on the VCR using the remote controller 60 for recording; When the VCR is turned on in the VCR-on process, a screen adjustment mode selection process (S200) in which the user selects the screen adjustment mode using the remote controller 60; When the screen adjustment mode is selected in the screen adjustment mode selection process, the image quality adjustment process (S300, S400) for adjusting the screen to the desired image quality with the remote controller 60 to implement the desired image quality, and When the image quality is adjusted in the image quality adjusting process, the user applies a recording button using the remote controller (60), and the VCR includes a VCR recording process (S400) for performing the recording. The method of claim 1, wherein the image quality adjustment process, When the screen adjustment mode is selected in the screen adjustment mode selection process, the user inputs the desired image quality to the remote controller 60 to implement a desired image quality (S300), When the desired image quality is input in the image quality input process (S300), the timer 65 receives the input image quality information and controls the TV image processing IC 40 to adjust the image quality according to the image quality information. User-selected image quality recording method of a TVCR, characterized in that the process (S400).