KR19990069881A - Playback position shifter through TVCR recording tape contents display - Google Patents

Abstract

According to the present invention, in a TVCR, a table of contents of a recording tape is displayed by using an OSD function when playing a recording tape having recorded table of contents data and time data for each table of contents, and when the user inputs a desired number in the table of contents, the TVCR moves to the position. It is related to a device for moving a playback position through a recording tape table of contents. In order to display the recording contents of the currently played recording tape on the screen and to move to the position corresponding to the number selected in the recording contents when the recording tape is played, the contents of the recording in the composite video signal output during playback are displayed. And detecting and decoding a blanking signal in which time data for each table of contents is stored, storing the output data, and when the user switches a button for outputting a table of contents of a recording tape, the stored table of contents data is displayed on an OSD screen. When the user selects a number to move in the table of contents, a playback position moving device is shown through the display of the table of contents of the recording tape of the TVCR which recognizes the position according to the stored time data for the table of contents and moves to the play position for the desired number. .

Description

Playback position shifter through TV's recording tape table of contents

According to the present invention, in a TVCR, a table of contents of a recording tape is displayed by using an OSD function when playing a recording tape having recorded table of contents data and time data for each table of contents, and when the user inputs a desired number in the table of contents, the TVCR moves to the position. It is related to a device for moving a playback position through a recording tape table of contents.

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.

When the recording tape is reproduced in the TVCR as described above, there is a problem in that there is no means for displaying a plurality of program contents stored in the recording tape, and it is impossible to move to a position corresponding to the desired contents at the time of displaying the contents.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to detect and decode a blanking signal in which the data is stored when the table of contents data and the time data for each table are stored in a recording tape in which a plurality of recorded programs are stored. It is possible to provide a playback position moving apparatus through a recorded tape table of contents display of a TVCR which displays a stored table of contents by OSD and moves the user to a position corresponding to the number when the user selects a desired number from the displayed table of contents.

1 is a device for reproducing a playback position through the contents of a recording tape table of a TVCR.

2 is a flow chart for explaining the operation of the playback position moving apparatus through the display of the table of contents of the recording tape of the TVCR;

3 is a picture of the recording table of the recording tape displayed on the OSD

<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: loading motor 65: VCR deck

70: remote controller 75: timer

80: synchronization detector 85: sheath cone

90: blanking signal detector 95: blanking signal decoder

100: memory section 105: OSD section

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

FIG. 1 is a block diagram for explaining a playback position moving apparatus through a display of a recorded tape table of contents of a TVCR.

Referring to FIG. 1, the present invention provides a high frequency amplifier 15 for amplifying a high frequency signal, which is a composite video signal received from an antenna 10, a local oscillator 25 for supplying a signal for frequency conversion, An input signal amplified by the high frequency amplifier 15 and a local oscillation frequency received from the local oscillator 25 and a mixing unit 20 for converting into an intermediate frequency, the high frequency amplifier 15 and the local oscillator 25 And a tuner unit 30 configured to select a high frequency signal of a channel desired by a user and convert it into an intermediate frequency, and amplify an intermediate frequency signal that is a composite video signal applied from the tuner unit 30. Process and output to the CRT 35, output a composite video signal to the VCR Y / C IC 45 to be described later, and receive a playback composite video signal from the VCR Y / C IC 45; TV image processing IC 40 for outputting to 35; The CRT 35 outputs the composite video signal output from the processing IC 40 and the composite video signal from the TV image processing IC 40. The luminance signal is modulated by the FM low carrier and the low frequency conversion is performed by the color signal. On the other hand, the TV image processing IC 40 outputs a 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 into the original signal. Amplified by the VCR Y / C IC 45, the luminance signal and the color signal applied by the VCR Y / C IC 45, and then recorded on the video head 55. A head amplifier IC 50 which reads, amplifies and demodulates a signal recorded at 55, and is connected to the head amplifier IC 50, according to the signal of the head amplifier IC 50. The video head 55 which reads and writes WRITE in contact with the recording tape, and the sheath cone 8. 5) a loading motor 60 for advancing or reversing the recording tape according to the control of 5), a VCR deck 65 integrally formed with the video head 55 and the loading motor 60, and timers for various user control commands. A remote controller 70 that is wirelessly applied to a 75 and the tuner unit 30 and the TV image processing IC 40, and the TV according to a signal applied through a user's remote controller 70 operation. Applying a control signal to the image processing IC 40, driving the OSD unit 105 to output the table of contents to the screen when playing the recording tape, select the desired number on the display screen to move to the position A timer 75 for controlling the cone 85, a synchronous detection unit 80 connected to the VCR Y / C IC 45, for detecting the synchronous signal C-SYNC and outputting it to the ciscon 85; Receiving a synchronization signal from the synchronization detector 80 to control the VCR Y / C IC 45; Recording contents data and contents in the video signal of the sheath cone 85 which controls the loading motor 60 for the forward and backward of the recording tape, and the recording tape output to the VCR Y / C IC 45 during the playback of the recording tape. The blanking signal detector 90 detects a blanking signal containing time data, and the blanking signal detected by the blanking signal detector 90 decodes the table of contents data and the time data for each table of contents. Memory unit 100 comprising a blanking signal decoder 95 to be applied to the EEPROM for storing and outputting the table of contents data and the time data for each table of contents output from the blanking signal decoder 95 under the control of the timer 75. And an OSD unit 105 for outputting an OSD screen to display a table of contents under the control of the timer 75.

Referring to Figure 1 the operation of the present invention configured as described above is as follows.

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 85 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 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).

After the synchronization detection unit 80 is connected to the VCR Y / C IC 45 to detect the VCR synchronization signal C-SYNC mixed in the video signal output from the VCR Y / C IC 45, a pulse is detected. Converted to a signal form to be output to the ciscone 85 to be described later, wherein the ciscone 85 receives the synchronization signal from the synchronization detector 80 to control the VCR Y / C IC 45 In connection with the timer 75 to be described later.

Hereinafter, the operation of the sheath cone 85 will be described in detail.

The ciscon 85 is a part that plays a role of relaying between the user and the VCR set, and receives the synchronization signal from the synchronization detection unit 80 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 the button of the remote controller 70 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 85 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 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 a reservation recording, the timer 75 to be described later and data corresponding to the reservation recording are received and processed by serial data processing.

Here, the operation of the timer 75 for controlling the overall operation of the TV image processing IC 40 and the system by receiving the synchronization signal through the synchronization detector 80 will be described in detail.

First, after receiving a sync signal in the form of a pulse from the sync detector 80 to detect a normal broadcast signal application state, a control signal is applied to the TV image processing IC 40 to the VCR Y / C IC 45. 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 70 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 (85) during the scheduled recording, and sets a recording start time and a recording finish time to automatically record the current deck state or the system ( 85) and detects the operation state so that it is displayed on the display unit mounted on the TVCR system by 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 above-described general operation, the operation of the playback position moving device through the display of the contents of the recording tape of the TVCR is as follows.

The video head 55 reads the video signal recorded on the recording tape, and the video head 55 reads the read video signal to the head amplifier IC 50 when the recorded tape is stored. The head amplifier IC 50 amplifies the video signal and applies it to the VCR Y / C IC 45. The video signal applied to the VCR Y / C IC 45 is demodulated into an original luminance signal and a color signal, and then generates a playback composite video signal and is applied to the TV image processing IC 40. The blanking signal included in the video signal applied to the IC 45 is detected by the blanking signal detection unit 90. The blanking signal detector 90 applies a blanking signal detected from the video signal to the blanking signal decoder 95 to decode the table of contents data and the time data for each table of contents included in the blanking signal. The blanking signal decoder 95 applies decoded recorded table of contents data and table of contents time data to the timer 75, and the timer 75 stores the data in the memory unit 100 which is an EEPROM. When the user switches the recording tape recording table of contents output button, the timer 75 outputs the recording table data stored in the memory unit 100 to the OSD unit 105, and the OSD unit 105 outputs the recorded table of contents data. The image is processed on the OSD screen and displayed on the CRT 35. The display form is as shown in FIG. Referring to Figure 3, 1, 2, 3, 4, 5 is the table of contents of the program currently stored in the recording tape. If the user wants to change the playback position to the program corresponding to 'Program 3' among the currently displayed recording contents, when the button 3 is switched using the remote controller 70, the timer 75 returns the contents 3. The loading motor of the VCR deck 65 is controlled by controlling the sheath 85 so as to read the time data for the position corresponding to the table from the time data for each table of contents stored in the memory unit 100 and move to the position corresponding to the time. 60) to change the playback position.

Referring to the detailed flowchart of the operation of the playback position shifting device through the display of the recording tape table of the TVCR in the above process as follows.

2 is a flowchart for explaining the operation of the playback position moving apparatus via the display of the recorded tape table of contents of the TVCR.

Referring to FIG. 2, the user reproduces the recording tape in which the table of contents data and the time data for each table of contents are stored using the remote controller 70 (S100).

When the recording tape is reproduced in step S100, the blanking signal detection unit 90 detects a blanking signal containing recorded table of contents data and time data for each 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 95 decodes the blanking signal and outputs the table of contents data and the time data for each table to the timer 75 (S300).

The data output in step S300 is stored in the memory unit 100 under the control of the timer 75 (S400).

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

According to the result determined in step S500, if the user does not output the recording contents of the recording tape, only the existing image of the recording tape is reproduced (S600), and if the user outputs the recording contents of the recording tape, the timer 75 stores the memory. The table of contents data stored in the unit 100 is output to the OSD unit 105 (S700).

The recorded table of contents data output in step S700 is image-processed by the OSD in the OSD unit 105 and displayed on the CRT 35 (S800).

When the recorded table of contents is displayed on the screen in step S800, the user determines whether there is a table of contents number to be moved in the table of contents (S900).

According to the result determined in step S900, if there is no table number to be moved, go to step S600 to play only the existing image, and if there is a table number to be moved, use the remote controller 70 to switch the desired table number (S1000). ).

When the desired table number is switched in step S1000, the timer 75 reads the time data of the table corresponding to the table of contents from the table of time data stored in the memory unit 100 and moves to the location corresponding to the time. By controlling the sheath cone 85 so as to drive the loading motor 60 to change the playback position (S1100).

Through all the above processes, the apparatus for shifting the playback position through the display of the recorded tape table of contents of the TVCR is implemented.

As can be seen from the above description, in the TVCR, when the recorded tape is stored, the table of contents of the currently recorded recording tape is displayed on the screen, and the recording is performed on the screen. In order to move to the position corresponding to the number selected in the table of contents, the blanking signal in which the table of contents data and the time data for each table of contents are stored and decoded is stored in the composite video signal output during playback, and the output data is stored and the user records When the button for outputting the recorded contents of the tape is switched, the stored recorded contents data is displayed on the OSD screen, and when the user selects a number to be moved from the displayed recorded contents, the position is recognized according to the time data for each stored contents. Move to the playback position for the desired number. And there is an effect that the user can easily move to a position corresponding to the desired contents.

Claims (3)

In a TVCR that combines the functionality of a television with the functionality of a VCR, Recording data detection means for detecting and outputting data contained in a video signal to which the recording tape is reproduced and output when the recording tape is stored, the recorded table of contents data and time data for each table of contents; Memory means for storing and outputting data output from the recording data detecting means; A control means for controlling the OSD output means to display the recorded contents in the OSD, and controlling the playback position moving means to move to the position when the number is switched in the displayed recorded contents; OSD output means for image processing the table of contents output from the memory means to the OSD screen in accordance with the control of the control means; And a playback position shifting means for changing the playback position of the recording tape to a position corresponding to the number selected by the user according to the control of the control means. The recording data detection means according to claim 1, A blanking signal detection unit 90 for detecting a blanking signal containing recorded table of contents data and time data for each table of contents from the video signal of the recording tape output to the VCR Y / C IC 45 during playback of the recording tape; The recording tape of the TVCR, comprising a blanking signal decoder 95 which decodes the blanking signal detected by the blanking signal detection unit 90 and applies the table of contents data and the time data for each table of contents to the timer 75. Playback position shifter via contents display. The system of claim 1, wherein the playback position shifting means comprises: a sheath cone 85 for controlling the loading motor 60 for advancing and reversing the recording tape under the control of the timer 75; Playback position shifting device through the display of the recording table of contents of the TVCR, characterized in that consisting of a loading motor 60 for performing the forward and reverse of the recording tape in accordance with the control of.