KR0185316B1 - Device and method for the recording channel selection of a vcr - Google Patents

Abstract

The present invention relates to a recording channel selection device and method of a VTR that enables a user to record a desired channel on a tape by channel locking. The present invention relates to a television broadcast signal or a composite video signal output from a signal processor, through a detector. Configured to determine the presence of a signal,

When the user inserts the tape to record the tape through the VTR, it detects the signal from the outside and checks whether there is a signal from the outside connected to the external device.

Check if there is an external signal and request to change the channel, and if there is no request to change the channel, it is fed back for the first time, while locking the channel with the change request as the recording channel,

If there is no external signal and there is a change request of the channel, the channel is changed by outputting the tuning data of the corresponding channel.

Description

Recording channel selection device and method of the VTR

1 is a block diagram showing a schematic configuration of the present invention.

2 is a flow chart showing the operation of the present invention.

* Explanation of symbols for main parts of the drawings

3: microprocessor 9: signal processor

10 filter circuit 11 detector

The present invention relates to an apparatus and method for selecting a recording channel of a VTR. In particular, when a composite video signal reproduced from a videotape is output from a VTR to an external monitor, there is a composite video signal output to an external monitor and a channel through a microprocessor. The present invention relates to a recording channel selection device and method for a VTR that locks a corresponding channel to a recording channel when a change is required.

In modern times, due to the development of the home appliance industry, each home has a TV for receiving and watching at least one TV broadcast signal. It is a well-known fact that there are so many homes watching videotapes that have recorded children's cartoons.

And everyday life is getting very busy, and office workers, who are living in complicated ways, often don't see the TV signal in front of the TV on time at home. After recording through a video tape recorder or a cassette tape recorder, it is often played back, and a lot of sports relays were recorded.

However, sports are played outdoors, especially outdoors, and programs such as baseball games, which are very sensitive to weather conditions, often do not open the game at the scheduled time. Frequently it was not.

Conventionally, in a video tape recorder or a cassette tape recorder that performs recording, recording is performed through a recording head on a video tape regardless of whether an external signal input from the outside through an antenna is present. Only the previously recorded content will be erased on the video tape passing through.

That is, the recording was performed simply without properly checking whether the composite video signal or the television broadcast signal input from the outside is a normal signal.

Therefore, when the composite video signal reproduced while driving the video tape in the video tape recorder or the cassette tape recorder is output through the output terminal to the outside, there is a composite video signal output to the external monitor, and the channel change is required through the microprocessor. If you do, you can lock the channel to perform recording while preventing any signal from being recorded on the videotape.

According to the present invention for solving the above-described problems, when the user records on the video tape through the VTR, selection of a channel having a normal signal input from the outside through an antenna or through a signal input terminal is performed in the key input unit or the like. It is an object of the present invention to provide a recording channel selection device of a VTR that allows a corresponding channel to be locked to a recording channel when there is an input.

In addition, another object of the present invention is that if the user to record to the video tape via the VTR, if the selection of the channel with a normal signal input from the outside through the antenna or through the signal input terminal is input to the microprocessor by the key input unit, etc. It is to provide a recording channel selection method of the VTR that locks the channel to the recording channel.

A specific method of the present invention for achieving the above object is a television broadcast signal or a composite video signal that is input through an antenna or reproduced from a separate playback device is passed through a signal processor, through a detector to input through a detector Configure the received microprocessor to determine the presence of a normal signal,

The user wants to record the tape through the VTR so that the video tape is inserted and seated by the deck by pushing the video tape inside the device, and is input through an antenna and selected by the tuner from among many TV broadcast signals. A first process of detecting a television broadcast signal from

A second process of causing the microprocessor to check whether there is a television broadcast signal or a composite video signal input from the outside through an antenna or connected to an external device such as a separate playback device;

When the microprocessor determines that there is an external signal in the state of the signal input through the detector, a third process of confirming whether the user requests a channel change by using the channel up / down key of the remote control or the key input unit again; ,

If there is no request to change the user's channel through the remote control or key input unit, the controller returns to the initial state to check whether an external signal is input, and if there is a request to change the user's channel through the remote control or key input unit, A fourth step of locking the channel with the change request as a channel for recording a television broadcast signal or a composite video signal;

If there is no signal from the outside after checking whether there is an external signal in the state of the signal input through the detector, and if there is a request to change the user's channel through the remote controller or the key input unit, the phase lock is performed on the microprocessor. A fifth process of outputting tuning data of a channel for changing a channel in a loop so that a tuner receiving a phase control signal tunes the signal of the channel;

The sixth processes of changing the channel from the tuner that receives the phase control signal through the phase lock loop to the channel for which the channel is changed by the user by the tuning data are performed.

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

1 is a view showing an embodiment of a circuit configuration applied to the present invention.

The VTR to which the present invention is applied includes the power key of the remote controller 1 or the key input unit 2, the channel up / down key, the volume up / down key, the recording key, the play key, the stop / jet key, the fast forward key, and the rewind. A microprocessor 3 which performs a corresponding operation by inputting a user's option through a key, a slow play key, a mute key, a TV / VTR switch key, a function adjustment key,

Phase lock loop for receiving a control signal for selecting a channel of a broadcasting station broadcasting a television broadcasting signal from the microprocessor 3 and outputting a phase control signal according to channel selection to change the tuning voltage (4). )Wow,

A signal according to a station for selecting a television broadcast signal of a selected channel from among several television broadcast signals input through the antenna 6 by a phase control signal from the microprocessor 3 through the phase lock loop 4; And the tutor (5) to be input to the microprocessor (3),

A deck 7 for inserting and seating the video tape inserted by the user to be inserted into the supply and retrieval reel disks, as well as an ejection for extracting the video tape to the outside, and an operation according to the running of the video tape;

The servo which receives the composite video signal detected by the playback head from the video tape being reproduced by the deck 7 while being controlled by the microprocessor 3, processes the signal, and outputs the signal to the microprocessor 3. 8) with,

A signal processor for receiving a television broadcast signal or a composite video signal output through the microprocessor 3 and processing the signal to output a video signal V and stereo audio signals R and L; 9) with,

Resistors (R1), (R2), (R3), and capacitors (R1), (R2), (R3), and the like, which remove noise from a television broadcast signal or a composite video signal output from the signal processor 9 and output them to a monitor (not shown) through the output terminal. A filter circuit 10 composed of C1), (C2) and (C3),

Detection that the TV broadcast signal or the composite video signal inputted from the filter circuit 10 contains a normal synchronization signal or the like, and transmits the result to the microprocessor 3 to determine the presence or absence of a signal. It is composed of (11).

2 is a flow chart for explaining the control process of the present invention.

The first process involves inserting and seating the video tape by the deck 7 by pushing the video tape into the inside of the device in order to record the tape through the VTR (S1), input through the antenna 6 and tuner. (5), the TV broadcast signal from the outside selected from the TV broadcast signals of the channel is detected (S2).

In the second process, the microprocessor 3 detects whether there is a TV broadcast signal or a composite video signal input from the outside through the antenna 6 or connected to an external device such as a separate playback device. Check in (S3).

In the third process, when it is confirmed that there is an external signal in the microprocessor 3 as a state of a signal input through the detector 11, the user again changes the channel up / down key of the remote controller 1 or the key input unit 2. It is checked whether or not the channel change request is made by using S4.

In the fourth process, when there is no request for changing the channel of the user through the remote controller 1 or the key input unit 2, the controller returns to the initial state to check whether an external signal is input, while the remote controller 1 or key is pressed. If there is a change request of the user's channel through the input unit 2, the channel with the change request is locked as a channel for recording a television broadcast signal or a composite video signal (S5).

The fifth process is a state of a signal input through the detector 11, and after confirming whether there is an external signal in the microprocessor 3, there is no signal input from the outside, and the remote controller 1 or the key input unit 2 If the user requests to change the channel through (S6), the tuner (5) outputs the tuning data of the channel for changing the channel from the microprocessor (3) to the phase lock loop (4) and receives the phase control signal. The channel signal is tuned (S7).

The sixth step is to change the channel from the tuner 5 that receives the phase control signal through the phase lock loop 4 to the channel to which the channel is requested by the user through the tuning data (S8).

Referring to the effects of the present invention made as described above with reference to FIGS. 1 and 2,

The first process involves inserting and seating the video tape by the deck 7 by pushing the video tape into the inside of the device in order to record the tape through the VTR (S1), input through the antenna 6 and tuner. By (5), the TV broadcast signal from the outside selected from the TV broadcast signals of many channels is detected (S2).

In the second process, the microprocessor (or the microprocessor) detects whether there is a TV broadcast signal or a composite video signal input from the outside through an antenna 6 or connected to an external device such as a separate playback device. Check in 3) (S3).

In the third process, when it is confirmed that there is an external signal in the microprocessor 3 as a state of a signal input through the detector 11, the user again changes the channel up / down key of the remote controller 1 or the key input unit 2. It is checked whether or not the channel change request is made by using S4.

In the fourth process, when there is no request for changing the channel of the user through the remote controller 1 or the key input unit 2, the controller returns to the initial state to check whether an external signal is input, while the remote controller 1 or key is pressed. If there is a change request of the user's channel through the input unit 2, the channel with the change request is locked as a channel for recording a television broadcast signal or a composite video signal (S5).

The fifth process is a state of a signal input through the detector 11, and after confirming whether there is an external signal in the microprocessor 3, there is no signal input from the outside, and the remote controller 1 or the key input unit 2 If the user requests to change the channel through (S6), the tuner (5) outputs the tuning data of the channel for changing the channel from the microprocessor (3) to the phase lock loop (4) and receives the phase control signal. The channel signal is tuned (S7).

The sixth step is to change the channel from the tuner 5 that receives the phase control signal through the phase lock loop 4 to the channel to which the channel is requested by the user through the tuning data (S8).

When the user inserts the tape into the deck 7 in order to record the tape through the VTR (S1), the user receives from the antenna 6 and is tuned in the tuner 5 and signal processed by the signal processor 9 from the outside. The signal is detected by the detector 11 (S2).

According to the detection result input from the detector 11, the microprocessor 3 checks whether there is a normal input from the outside (S3).

If a normal signal is input from the outside, the microprocessor 3 checks whether the user requests to change the channel as the channel up / down key of the remote controller 1 or the key input unit 2 (S4).

If there is no channel change request, the microprocessor 3 receives the external signal for the first time and receives an external signal. If there is a channel change request by the user, the microprocessor 3 outputs the phase control signal to the phase lock loop ( 4), the tuner 5 locks the channel with the change request as the recording channel (S5).

If there is no input of a normal signal from the outside and a user requests a change of a channel, the microprocessor 3 outputs and tunes a phase control signal, which is tuning data of the corresponding channel, through the phase lock loop 4 (S6). ).

The tuner 5 changes to the corresponding channel according to the phase control signal (S7).

As described above, according to the recording channel selection apparatus and method of the VTR of the present invention,

The user wants to record the tape through the VTR so that the video tape is inserted and seated by the deck by pushing the video tape inside the device, and is input through an antenna and selected by the tuner from among many TV broadcast signals. Detects TV broadcast signals from

The microprocessor checks whether there is a television broadcast signal or a composite video signal input from the outside while connected to an external device through a detector.

When the microprocessor confirms that there is an external signal in the state of the signal input through the detector, the user again checks whether the user requests a channel change by using a channel up / down key on the remote control or key input unit.

If there is no request to change the user's channel through the remote control or key input unit, the controller returns to the initial state to check whether an external signal is input. Or lock to a channel for recording a composite video signal,

After checking whether there is a signal input from the outside through the detector, if there is no input signal, and the user requests to change the channel through the remote controller or the key input unit, a phase lock loop is used to change the channel. Outputs the tuning data of a channel so that the tuner receiving the phase control signal tunes the signal of the channel,

The tuning data is performed by the process of changing the channel from the tuner to the channel where the channel needs to be changed by the user by recording the desired channel through the locking of the channel when the user wants to record with an external signal. It is to be done.

Claims (2)

The recording of the VTR characterized in that it is configured to determine whether there is a normal signal input by allowing the television broadcast signal or the composite video signal inputted through the antenna and processed and output from the signal processor to pass through the detector through a filter circuit. Channel selector. When the user inserts the tape to record the tape through the VTR, there is a first process of detecting a signal from the outside, a second process of checking whether there is a signal input from the outside connected to an external device, and an external signal. A third step of checking whether there is a change request of the channel, a fourth step of returning the channel with the change request to the recording channel while returning for the first time if there is no change request of the channel, and changing the channel without an external signal. And a fifth process of outputting the tuning data of the corresponding channel if required, and a sixth process of changing the channel by the above tuning data.