KR19990069884A - Recording tape of TVCR with PIP function - Google Patents

Abstract

According to the present invention, in a TVCR having a PIP function, a recording tape recording table of a TVCR having a PIP function outputs a table of contents of a recording tape input and stored by a user during playback of the TVCR to a PIP sub-screen using an OSD screen. It relates to a screen output device. In order to output the table of contents on the screen when playing the recorded tape in which the table of contents entered by the user is reproduced, a blanking signal in which the table of contents is stored is detected from the composite video signal output during the playback, and the detected blanking signal is After decoding and storing the text signal corresponding to the table of contents, when the user switches a button that outputs the table of contents using the remote controller, the OSD displays the text signal corresponding to the stored table of contents and outputs the sub-screen of the PIP. There is provided a sub-screen output device of a recording tape recording table of a TVCR having a PIP function in which a recording table input by a user is displayed as an image.

Description

TV Tape with PiP Function Recording Table of Contents Secondary Screen Output Device

According to the present invention, in a TVCR having a PIP function, a recording tape recording table of a TVCR having a PIP function outputs a table of contents of a recording tape input and stored by a user during playback of the TVCR to a PIP sub-screen using an OSD screen. It relates to a screen output device.

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.

On the contrary, during reproduction, the recorded magnetic tape is driven while being connected to the gap of the magnetic head, and the signal read by the magnetic head is amplified and processed and reproduced through the water pipe and the speaker.

A PIP function may be provided in the TVCR as described above. The PIP function of the TVCR having the PIP function will be described with reference to FIG. 1 as follows.

1 is a schematic block diagram of a typical PIP television.

Referring to FIG. 1, a television having a general PIP function is used for separating and tuning a main picture and a sub picture from an antenna 1 for receiving a plurality of broadcast signals and a broadcast signal input from the antenna 1. Tuning of the main tuner unit 2 and the sub tuner unit 5, the main video signal processing unit 3 for image processing the broadcast signals selected from the main tuner unit 2, and the sub tuner unit 5 described above. A PIP signal processor 6 for sub-processing the broadcast signal, a switching unit 7 for adding the output signal of the PIP signal processor 6 to the main video signal processor 3, and the main A microcomputer 8 for supplying control signals required for the tuner unit 2, the sub-tuner unit 5, the main video signal processing unit 3, the switching unit 7 and the PIP signal processing unit 6, and the main It consists of a CRT (4) for displaying a video signal output from the video signal processing section (3).

Referring to the operation of implementing a multi-screen by the PIP television as described above are as follows. That is, when the user selects a multi-screen using a remote controller or the like, the microcomputer 8 recognizes the multi-screen signal and applies the multi-screen signal to the PIP signal processor 6, and the main video signal processor 3 ) Outputs an OSD signal corresponding to the number of multiple screens superimposed with the main video signal. On the other hand, the video signal of the sub-screen output from the PIP signal processing section 6 is displayed in the OSD area superimposed on the main video signal. Through the above process, the main screen and the sub screen selected by the user are displayed on one television.

In the TVCR having the PIP function as described above, there is a problem in that there is no device capable of outputting the stored table of contents in the case of a general TVCR when playing a recording tape in which the table of contents input by the user is stored.

The present invention has been made to solve the above problems, and an object of the present invention is to detect a blanking signal containing a table of contents entered by a user when recording a program, to decode the table of contents and to add a portion of the PIP through an OSD function. The present invention provides a sub-screen output device of a recording tape recording table of a TVCR having a PIP function for outputting to a screen.

1 is a schematic block diagram of a typical PIP television

Figure 2 is a video recording apparatus sub-screen output device of the recording tape of a TVCR having a PIP function

3 is a flowchart for explaining the operation of the apparatus for outputting the sub-screen of the recording table of contents of a recording tape of a TVCR having a PIP function;

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

10: antenna 15: main tuner circuit

20: sub-tuner circuit portion 25: switching unit

30: PIP signal processor 35: main video signal processor

40: TV image processing IC 45: CRT

50: VCR Y / C IC 55: Head Amplifier IC

60: video head 65: remote controller

70: timer 75: synchronization detection unit

80: sheath cone 85: blanking signal detection unit

90: blanking signal decoder 95: memory unit

100: OSD unit

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment for achieving the above object will be described.

2 is a block diagram illustrating an apparatus for outputting a recording table of contents of a recording tape of a TVCR having a PIP function.

Referring to Figure 2, the present invention is a high frequency signal received through the antenna 10 to tune the channel for display on the main screen, the high frequency amplification process of the composite video signal of the tuned channel and the channel is oscillated by tuning A main tuner circuit unit 15 for converting and amplifying to an intermediate frequency by mixing with the oscillation frequency, and a subtuner for selecting and converting a channel to be displayed on a sub-screen among the high frequency signals received through the antenna 10, and converting and amplifying to an intermediate frequency. A switching function connected to the circuit unit 20 and the main tuner circuit unit 15 so that the composite video signal applied from the main tuner circuit unit 15 is applied to the PIP signal processing unit 30 or the main image signal processing unit 35. Connected to the switching section 25, the sub-tuner circuit section 20 and the switching section 25, from the sub-tuner circuit section 20 and the switching section 25. PIP signal processing unit 30 for mixing the composite video signal to be applied to the main video signal processing unit 35 through the switching unit 25, and the composite video signal corresponding to the channel selected by the main tuner circuit unit 15 And a main video signal processing unit 35 for receiving a PIP composite video signal from the switching unit 25 and demodulating and applying it to the TV image processing IC 40 to be displayed on the CRT 45, and the main video signal processing unit. Outputs the composite video signal applied from the 35 to the CRT 45, outputs the composite video signal to the VCR Y / C IC 50 described later, and plays back from the VCR Y / C IC 50. A TV image processing IC 40 for receiving a composite video signal and outputting the composite video signal to the CRT 45, a CRT 45 for outputting a composite video signal output from the TV image processing IC 40, and the TV image. The composite image signal is received from the processing IC 40 and the luminance signal is modulated by the FM low carrier. The color signal is subjected to low frequency conversion, and a playback composite video signal generated by demodulating the modulated luminance signal and the color signal output from the head amplifier IC 55 connected to the VCR Y / C IC 50 into the original signal is outputted. The VCR Y / C IC 50 applied to the TV image processing IC 40 and the luminance signal and the color signal modulated from the VCR Y / C IC 50 are amplified and recorded on the video head 60. On the other hand, the head amplifier IC 55 for reading, amplifying and demodulating the signal recorded in the video head 60 and the head amplifier IC 55 are connected to the head amplifier IC 55, A video head 60 that reads and writes in contact with a cassette cassette tape according to a signal of 55), and a remote that wirelessly applies various user control commands to the timer 70. Controller 65, the main tuner circuit portion 15, sub-tuner circuit portion 20, switching Control unit 25, PIP signal processing unit 30, main video signal processing unit 35, TV image processing IC (40), the TV image processing in accordance with the signal applied through the user's remote controller 65 operation Applying a control signal to the IC 40 and controlling the sheath 80, driving the OSD unit 95 to output the table of contents stored by the user when playing the recording tape output from the OSD unit 95 The video signal to the PIP signal processor 30 to be output as a sub-picture, and connected to the VCR Y / C IC 50 to detect the synchronization signal C-SYNC to detect a sync signal. A synchronization detector 75 for outputting to the 80, a sheath cone 80 for controlling the VCR Y / C IC 50 by receiving a synchronization signal from the synchronization detector 75, and the VCR Y / C IC 50; And a blank for detecting a blanking signal containing the table of contents in the video signal of the recording tape output to the VCR Y / C IC 50 during playback of the recording tape. A blanking signal decoder 90 for decoding the blanking signal detected by the signal detecting unit 85 and the blanking signal detecting unit 85 and applying the table of contents of the recording tape to the timer 70 as a text signal; and the blanking signal decoder. A memory unit 95 consisting of an EEPROM for storing and outputting the recorded table of contents text signal outputted from 90 under the control of the timer 90, and the PIP unit displaying the recorded table of contents under the control of the timer 90 as an OSD screen. It is composed of an OSD unit 100 for applying the stored table of contents to the PIP signal processing unit 30 as an OSD image signal to be output to the screen.

Referring to Figure 2 the operation of the present invention configured as described above is as follows.

Referring to FIG. 2, the high frequency signal received through the antenna 10 is selected as a constant channel by the main tuner circuit 15 and the sub tuner circuit 20, and is converted into an intermediate frequency and amplified. The main composite video signal applied from the main tuner circuit unit 15 is applied to the switching unit 25 under the control of the timer 70, and the sub composite video signal applied from the sub tuner circuit unit 20 is the timer 70. ) Is applied to the PIP signal processor 30 under the control of. The switching unit 30 applies the main composite video signal to the PIP signal processing unit 30 and is combined with the sub-composite video signal applied to the PIP signal processing unit 30 when the multi-screen output is performed. Is processed as a PIP video signal. The PIP signal processing unit 30 is applied to the main video signal processing unit 35 through the switching unit 25 to output the PIP video signal combined with the sub screen and the main screen to the screen under the control of the timer 70. do. The main video signal processing unit 35 applies the PIP video signal to the TV video processing IC 40. The TV image processing IC 40 processes the composite video signal applied from the main video signal processing unit 35 to be output to the CRT 45 and to the VCR Y / C IC 50 controlling the operation of the VCR. And a playback composite video signal from the VCR Y / C IC 50 to be output to the CRT 45.

The VCR Y / C IC 50 receives a composite video signal from the TV image processing IC 40 according to a control signal of the scissor 80 to be described later in the recording mode so that the luminance signal is converted into an FM low carrier. In addition, the color signal is low-pass converted, and then output to the video head 60 through the head amplifier IC 55 to be recorded on the video tape, while in the playback mode, the signal read by the video head 60 in the head amplifier IC A luminance signal converted through the FM signal and a low-converted color signal that are received through the digital signal 55 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 (45).

After the synchronization detection unit 75 is connected to the VCR Y / C IC 50 to detect a VCR synchronization signal C-SYNC mixed in the video signal output from the VCR Y / C IC 50, a pulse is detected. It converts into a signal form and outputs it to the ciscon 80 to be described later, wherein the ciscon 80 receives the synchronizing signal from the synchronizing detector 75 to control the VCR Y / C IC 50. In connection with the timer 70 to be described later.

Hereinafter, the operation of the ciscon 80 will be described in detail.

The ciscon 80 serves as a relay between the user and the VCR set, and receives the synchronization signal from the synchronization detection unit 75 and modulates and demodulates the luminance signal and the color signal in the VCR Y / C IC 50. The control signal, and senses an electrical signal corresponding to the button of the remote controller 65 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 80 controls the AC power supplied through the power cord by a power control signal, drives the loading motor when the cassette is taken out and inserted, 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 end of the recording tape to adjust the progress of the tape, and detects the rotation of the reel (not shown; reel) to check the progress of the recording tape is generated from the reel sensor (not shown; RREE 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 for the protection of the recording tape, and when the drum (not shown; DRUM) rotates at a constant speed, it detects a signal of 30 MHz and the system automatically stops. To perform a sensing function such as switching to the stop mode. In order to perform a function such as reservation recording, the timer 70 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 70 for controlling the overall operation of the TV image processing IC 40 and the system by receiving the synchronization signal through the synchronization detector 75 will be described in detail.

First, after receiving a sync signal in the form of a pulse from the sync detector 75 and detecting a normal broadcast signal application state, a control signal is applied to the TV image processing IC 40 to provide the VCR Y / C IC 50. The playback composite video signal outputted from the &lt; RTI ID = 0.0 &gt; In addition, by comparing the button that the user has switched the remote controller 65 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 80 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 ( 80) and detects the operating state of the display to be displayed on the display unit mounted on the TVCR system using the LED.

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

In addition to the general operation of the present invention as described above, the operation of the TVCR having a PIP function with respect to the recording tape recording contents sub-screen output device is as follows.

The video head 60 reads the video signal recorded on the recording tape, and the video head 60 applies the read video signal to the head amplifier IC 55. The head amplifier IC 55 amplifies the video signal and applies it to the VCR Y / C IC 50. The video signal applied to the VCR Y / C IC 50 is demodulated into an original color signal and a luminance signal, and then generates a playback composite video signal and is applied to the TV image processing IC 40. The blanking signal mixed in the video signal applied to the IC 50 is detected by the blanking signal detection unit 85. The blanking signal detection unit 85 applies the blanking signal detected from the video signal to the blanking signal decoder 90 so as to be converted into a text signal. The blanking signal decoder 90 applies a text signal indicating the recording contents of the recording tape to the timer 70, and the timer 70 stores the text signal in the memory unit 95, which is an EEPROM. When the user uses the remote controller 65 to switch the recording tape recording table of contents output button, the timer 70 drives the OSD unit 100 to output the stored text signal, and the OSD unit 100 The text signal is OSD image processed and applied to the PIP signal processor 30. The text signal representing the recorded contents processed by the OSD applied to the PIP signal processing unit 30 is processed into a PIP subscreen (subscreen) under the control of the timer 70 and output from the VCR to the TV image processing IC 40. Are mixed with the original video signal and displayed on the CRT 45.

Referring to the detailed flowchart of the operation of the sub-screen output device of the recording tape recording table of the TVCR with the PIP function in the above process as follows.

3 is a flowchart for explaining an operation of an apparatus for outputting a sub-screen of a recording tape of a recording tape of a TVCR having a PIP function.

Referring to FIG. 3, the user plays the recording tape in which the recording contents input by the user are stored using the remote controller 65 (S100).

When the recording tape is reproduced in step S100, the blanking signal detection unit 85 detects the blanking signal containing the table of contents from the composite video signal applied to the VCR Y / C IC 40 (S200).

When the blanking signal is detected in step S200, the blanking signal decoder 90 decodes the blanking signal and outputs the table of contents as a text signal to the timer 70 (S300).

The text signal output in step S300 is stored in the memory unit 95 under the control of the timer 70 (S400).

After the text signal is stored in step S400, the user determines whether to output the table of contents (S500).

According to the result determined in step S500, if the user does not output the recorded table of contents (S600) and only if the user outputs the recorded table of contents, the timer 70 is stored in the memory unit 95 The table of contents stored as a text signal is output to the OSD unit 100 (S700).

The table of contents output from the S700 is image-processed by the OSD unit 100 by the OSD (S800).

The table of contents image processed by the OSD in step S800 is applied to the PIP signal processor 30 under the control of the timer 70 to process the image on the PIP sub-screen (S900).

In the process S900, the video signal including the recording contents processed by the OSD on the PIP sub-screen is mixed with the original video signal output from the VCR by the TV image processing IC 40 and displayed on the CRT 45 (S1000).

Through all the above processes, as the present invention intends, the apparatus for outputting a sub-screen display of a recording tape of a recording tape of a TVCR having a PIP function is implemented.

As can be seen from the above description, in the TVCR having a PIP function, the present invention outputs the playback table to display the table of contents on the screen when the user records the recorded table of contents. Detects the blanking signal in which the recorded table of contents is stored in the composite video signal, decodes the detected blanking signal, stores the text signal corresponding to the recorded table of contents, and then switches the button for the user to output the recorded table of contents using the remote controller. When the text signal corresponding to the stored table of contents is OSD image processed, it is output to the sub-screen of the PIP, so that the table of contents input by the user is displayed as an image.

Claims (2)

In a TVCR equipped with a PIP function, when a recording tape is stored in which a user-entered recording table is stored, the table of contents is detected by detecting the table of contents contained in a video signal that is reproduced and outputted as a text signal. Sudan, Memory means for storing and outputting the text signal outputted from the recording contents detecting means; A control means for controlling OSD image processing of the table of contents stored in the memory means to output the PIP sub-screen; OSD processing means for processing the table of contents stored in the memory means as an OSD image signal under the control of the control means; A recording tape of a TVCR having a PIP function comprising a PIP sub picture output means for processing an OSD video signal including a table of contents output from the OSD processing means into a PIP sub picture according to the control of the control means and outputting the PIP sub picture. Recording Contents Sub-screen output device. The method of claim 1, wherein the green table of contents detection means, A blanking signal detection unit 85 for detecting a blanking signal containing the table of contents from the video signal of the recording tape output to the VCR Y / C IC 50 during the playback of the recording tape; A blanking signal decoder (90) for decoding a blanking signal detected by the blanking signal detector (85) and applying a table of contents of a recording tape to a timer (70) as a text signal. Recording Tape Recording Contents Sub-screen output device.