KR920010038B1 - Method of selecting tv broad casting of vtr mode switched - Google Patents

Abstract

The method for dissolving the disadvantage of double operations comprises the following steps: detecting whether the data relevant to the TV broadcasting receiving mode at the VTR micom is inputted or not; switching the data detected from the micom to the TV broadcasting receiving mode by synchronizing the specific frequency; switching the receiving mode to the reproducing mode if the reproducing button were selected for receiving the TV broadcasting; otherwise, detecting inputted data; receiving the TV broadcasting in continuance if the data (P-SCAM) were not inputted.

Description

Mode switching method between VTR and TV

1 is a schematic diagram of a general apparatus to which the present invention is applied.

2 is a flow chart for explaining the operation of the embodiment according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: data input unit 20: micom

30: phase synchronization loop control unit 40: tuner

The present invention relates to a method of changing a mode between a TV and a VTR, which is a video recorder, and more particularly, to a method of easily switching between a TV and a VTR while watching a TV or performing a VTR in a playback mode. will be.

In general, when the magnetic tape is placed on the deck portion of the VTR to play a program recorded on the magnetic tape, and the play button is pressed, the program recorded on the magnetic tape is displayed on the screen.

In order to receive a TV broadcast while playing a program as described above, a user presses a stop button protruding outside the VTR or a stop key provided on a remote controller, and then inputs TV tuning data (ie, a broadcast channel) to be tuned in. On the contrary, in order to play the program recorded on the magnetic tape while watching TV broadcast, the viewer had to perform the two-step operation contrary to the above.

Accordingly, an object of the present invention is to automatically switch to the TV broadcasting channel mode when the TV broadcasting channel data is input while the VTR is performed in the play mode, to receive the TV broadcast, and to automatically receive the VTR when the play button is selected while receiving the TV direction. It is to provide a method for switching to the playback mode.

In order to achieve the above object, the present invention provides a first process for detecting whether data (P-SCAN) for switching a mode between a TV broadcast reception mode and a playback mode is input to a microcomputer in a VTR performing a playback mode; A second process of displaying mode switching data (P-SCAN) externally and switching to the TV direction reception mode when the mode switching data is detected in the first process; A third step of detecting whether a play button is selected while receiving a TV broadcast by performing the second process and switching to a play mode if selected, and detecting whether mode switching data (P-SCAN) is input if not selected; And when the mode switching data (P-SCAN) is input in the third process, the external display is switched off, and the mode is switched to the playback mode. When the data P-SCAN indicating the playback mode is not input, the TV broadcast continues. Characterized in that the fourth process of receiving.

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

The apparatus for implementing the mode switching method according to the present invention has a key attached to a remote controller or a main body for inputting data (P-SCAN) for switching the playback mode or TV broadcast reception mode of the VTR as shown in FIG. Is the data input unit 10 receiving input data from the matrix, the microcomputer 20 receiving data from the data input unit 10 and controlling the mode switching, and whether the data P-SCAN is input to the microcomputer 20? A light emitting element (LED) for displaying the outside, a data signal (data for band selection and tuning frequency control) and a clock signal and an enable signal output from the microcomputer 20, and a local oscillation frequency and band of the tuner 40. When the tuner 40 is composed of a phase synchronization loop control unit 30 that controls selection and tuning voltage, and a tuner 40 that combines inductance and capacitance to tune to a specific frequency, the tuner 40 has many frequencies. This allows to list some can be switched to can be tuned or may be different, such as the element values of the inductance and capacitance to one can be variable. In addition, among the above components, the microcomputer 20 serves as a control unit for controlling a peripheral device according to input data, and a general control device refers to a compact control device composed of hardware and software whose main processing functions are made of semiconductor integrated circuits. Device.

Such components are already well known in its configuration or the overall method of operation, and thus the detailed description thereof will be omitted.

Referring to the operation of the present invention having an embodiment as described above with reference to the flow chart shown in Figure 2 as follows.

The data input unit 10 shown in FIG. 1 receives data input by a mode switching key attached to a remote controller or a VTR, and receives data corresponding to a playback mode through the data input unit 10. When the data corresponding to the playback mode is input through the input unit 10, the microcomputer 20 controls the servo terminal and audio and video processing devices of the peripheral system VTR to play a program recorded on the magnetic tape seated on the deck unit. To start.

The flowchart shown in FIG. 2 will be described with reference to step 100 as a starting point.

If data is inputted through the data input unit 10 to the microcomputer 20 in the current state of operating in the VTR playback mode, it is checked whether the corresponding data is input of the data (P-SCAN) key corresponding to the TV broadcast reception mode. (Step 100). If the input data is not data corresponding to the TV broadcast reception mode (P-SCAN), the current playback mode is maintained or the corresponding function key is performed (step 101). Return to step).

However, if the input data is data indicating the TV broadcast reception mode, the LED is turned on and displayed externally to indicate to the outside that the TV broadcast reception is ready (step 102). At the same time, the light emitting diode is turned on and the mode is changed from the VTR mode to the tuning mode (step 103).

After the channel is switched to the tuning mode, the channel selection data output from the microcomputer 20 has a total of 18 bits, of which the upper four bits are for band selection and the lower 14 bits are for tuning the tuner's local oscillation frequency (fosc). As such, the phase synchronization loop control unit 30 that receives the channel channel data signal, the clock signal, and the enable signal output from the microcomputer 20 controls the tuner 40 according to the input channel channel data. Tune in.

In the tuning mode, a user can watch a desired broadcast program by tuning an external frequency according to channel data input by a user and tuning a frequency of a corresponding broadcast channel. However, if there is a key input from the data input unit 10 in the tuning mode, it is determined whether or not the key input is a Play key indicating the playback mode of the VTR mode (step 104).

In the case where the input key is a play key, it is switched from the current tuning mode directly to the playback screen of the VTR mode (step 106). However, if the input key is not a play key, it is determined whether the key input is data (P-SCAM) corresponding to the TV broadcast reception mode (step 105). If the input data is not related to the above data, since the key input is data irrelevant to the VTR mode, the control returns to the tuning mode and continues to receive TV broadcast (step 103).

However, if the data is data (P-SCAN), which means the TV broadcast reception mode, the light emitting diode which has turned on after step 102 is turned off (step 107), and the process proceeds to step 106 showing the play screen of the VTR. do.

According to the present invention described above, when the TV broadcast reception mode data is input while the VTR performs the play mode, the user automatically switches the TV broadcast to the play mode of the VTR and performs the reverse operation. It will provide the effect of eliminating the inconvenience.

Claims (1)

A first step of detecting whether data corresponding to a TV broadcast reception mode (P-SCAN) is input from the data input unit to the microcomputer of the VTR during the playback mode; A second step of switching to a TV broadcast reception mode by tuning to a specific broadcast station by tuning a specific frequency by displaying the external signal and controlling a tuner when data (P-SCAN) is detected in the mode switching in the first step; Performing a second process to detect whether a play button is selected from a data input unit while receiving a TV broadcast, switching to a play mode if selected, and detecting whether data P-SCAN is input if not selected; And a fourth process of interrupting an external display when the data P-SCAN is input in the third process, switching to a playback mode, and continuously receiving TV broadcasts when the data P-SCAN is not input. Mode switching method between VTR and TV.

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