JPH01174994A - Video tape recorder - Google Patents

Abstract

PURPOSE:To prevent the release of a mode otherwise caused by tampering of a child positively, by a method wherein a protect timer recording mode is selected with the operation of multiple kinds of operating keys in a combination and the release of a recording mode is released in a combination of multiple kinds of keys. CONSTITUTION:A timer key 1 and a stop key 2 are arranged at separate positions of a front panel. A timer recording control section which receives signals inputted from the timer key 1 and the stop key 2 performs a control so that an ordinary timer recording mode is selected when the time key 1 alone is operated and a protect timer recording mode when the timer key 1 and the stop key 2 are operated simultaneously. The selection of the protect timer recording mode enables positive prevention of a recording mode otherwise caused by tampering by a child.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a video tape recorder having a timer recording function.

(Prior Art) In a video tape recorder having this type of timer recording function, after pressing a timer key on an operation surface, a recording program and its start time are set.

Here, the conventional timer recording operation will be explained with reference to the flowchart of FIG. 5. First, in the power-on state, the timer key is pressed, and then the recording program is set, and the device enters the timer standby state. Note that in order to cancel this standby state, the timer key or the power key may be operated.

When the recording start time comes, the recording operation is started and timer recording is in progress. After this recording is finished, if other programs are set, timer recording is executed for all programs, and then the power is turned off. Further, even during timer recording, timer recording can be stopped by operating any of the timer key, stop key, or power key.

(Problems to be Solved by the Invention) According to the conventional video tape recorder described above, anyone can easily cancel the timer recording mode.

In other words, the timer recording mode is activated by pressing the timer key,
This mode can be easily canceled by pressing either the step key or the power key.

In the conventional configuration as described above, there is a problem in that someone who does not recognize the timer recording mode, such as an infant or a child, may play with the operation surface of the video tape recorder and cancel the mode. Ta.

In particular, this type of timer recording is used when the person who desires the recording is unable to be present, so it is not possible to monitor children's mischief. If there were a video tape recorder in which the timer recording mode cannot be easily canceled even by a child's mischievous operation, the above-mentioned situation could be solved, but such a video tape recorder has not been provided in the past.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned conventional problems and provide a video tape recorder having a protection function that prevents the timer recording mode from being easily canceled even by children playing with it. 9 [Structure of the Invention] (Means for Solving the Problems) The present invention provides a video tape recorder that performs a timer recording operation based on the operation of a timer operation key, which comprises: a timer operation key; , a timer that sets the protect timer recording mode when operated in combination with other operation keys, and accepts release of the protect timer recording mode only when the above plurality of operation keys are operated in combination. The configuration does not include a recording control means.

(Function) In the present invention, in addition to the normal timer recording mode, a protect timer recording mode can be selectively set.

In other words, it is possible to set the normal timer recording mode by operating the timer key only, but if you do not want to protect the timer recording mode from being easily canceled by children or other mischief, you can set the timer recording mode by operating the timer key only. By operating this key in combination with other keys, you can select the protect timer recording mode.

This protect timer recording can only be canceled by operating a combination of keys used for setting this mode. That is, the timer key must be operated in combination with other keys.

The condition for the combination operation of multiple types of keys may be, for example, if two types of keys are operated at the same time, or if multiple types of keys are operated consecutively within a predetermined time.

With the above configuration, the possibility that a child etc. will operate the above-mentioned multiple types of keys in combination is significantly reduced compared to the conventional single key operation, and it is possible to prevent this mode from being canceled due to mischief by a child etc. This can be reliably prevented.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the main parts of a video tape recorder which is an embodiment of the present invention, and FIG. 2 is a schematic illustration of the front panel of the embodiment.

Hereinafter, the configuration related to timer recording, which is a characteristic configuration of the present invention, will be explained. Timer key 1 is used to set the normal timer recording mode, and timer key 1 is operated simultaneously to set the protect timer recording mode. Other keys such as stop key 2,
It is placed as far away from the front panel as possible.

Note that 3 is a power key, and in addition to this, various keys, a display, indicators, etc. for executing the functions of the video tape recorder are arranged on the front panel.

The timer recording control unit 1o inputting the signals of the timer key 1 and the stop key 2 enters the normal timer recording mode when only the timer key 1 is operated, and the timer key 1 and the stop key 2 are operated at the same time. The timer recording control section 10 includes a timer counter 20. Program registration memory 30. A ROM 40 storing information necessary for control and a recording drive section 50 are connected.

Next, the operation of the apparatus of the above embodiment will be explained with reference to the flowchart of FIG.

Turn on the power of the video tape recorder by operating the power key 3 (step 1), and then turn on the power of the video tape recorder by operating the power key 3 (step 1). After this, if the timer key 1 and stop key 2 are operated at the same time, turn on the power of the video tape recorder (step 2). mode.

On the other hand, if the judgment in step 2 is No and only timer key 1 is operated (step 3), from then on,
This will shift to the normal timer recording mode (also referred to as normal timer recording mode).

First, the protect timer recording mode will be explained. When the time and program to be recorded by the timer are programmed in step 4, this information is stored in the program memory 40 and the protect timer is in a standby state (
Step 5). From then on, the timer recording control section 10
It is determined whether the time reserved by the timer (timer start time) has been reached (step 6), and if the time has been reached, the recording drive section 50 is driven and controlled to execute the recording operation (step 8). .:5 Here, if the timer start time has not been reached, it is checked in step 7 whether or not timer key 1 and stop key 2 are operated at the same time. If no operations are performed at the same time, the protect timer remains in standby state,
This protect timer recording mode is canceled only when two types of keys are operated at the same time, and the camera returns to the power-on state in step 1.

Therefore, the only way to cancel this mode while the protect timer is in standby mode is when you operate the same two keys at the same time as when the protect timer recording mode is set. Since it is highly unlikely that the video deck will be operated, this mode can be prevented from being released even if the person doing the recording is absent from the room where the video deck is located.

On the other hand, it is checked whether this mode has been canceled during the timer recording in step 8 (step 13).
). That is, only when the timer key 1 and stop key 2 are operated simultaneously during recording, the timer recording control section 10 accepts the cancellation of this mode and sets the power off state (step 11). In other cases, the mode will not be canceled and recording will continue.

Therefore, even during recording, it is possible to reliably prevent this mode from being erroneously canceled due to mischief by a child or the like, similar to when the protect timer recording mode is on standby.

When the recording operation is finished, determine whether the next program is registered or not (Step 9); if not, set the power off state (Step 11); if there is a program, then proceed to the next program. It is determined whether the program is protected or not, that is, whether or not timer key 1 and stop key 2 were used together when making the timer reservation (step 10). If the program is protected, the step 5 is performed to protect timer standby state. If there is no protection, it will return to the normal timer standby state.

Note that after setting the power off state in step 11, it is necessary to judge whether or not the power key 3 is operated next.
2) If operated, the process returns to step 1; if not operated, the power-off state is maintained.

Next, to briefly explain the normal timer recording mode, after operating only the timer key 1 in step 3,
When the program is registered (step 14), the normal timer waits (step 15). Then, in step 16, it is determined whether or not the timer start time has been reached, and if the timer start time has been reached, the process moves to step 8 for recording, and if it has not been reached, it is determined whether or not the mode has been canceled (step 17). . To cancel this, use the timer key 1. This can be executed by operating any of the stop keys 2.

Therefore, compared to canceling the protect timer recording mode, there is a greater possibility that it will be operated accidentally by a mischievous person such as a child.9 After transitioning to the recording operation, it is determined in step 19.20 whether or not this recording has been canceled. ing.

That is, this recording can be canceled by operating either the timer key 1, the stop key 2, or the power key 3.

Next, the combination operation of the two types of operation keys for setting the protect timer recording mode will be explained.The two types of keys may be operated simultaneously as in the above embodiment, or within a predetermined period of time. Two types of operation keys may be operated in succession.

Also, as for the two types of operation keys, it is preferable to use timer key 1 for setting the normal timer recording mode to avoid confusion, but for the other one, it is not necessary to use stop key 2. However, the present invention is not limited to this, and various other keys that can be used in combination with the timer key 1 to indicate the protect timer recording mode can be used. And the other key is
You can use only a specific key like stop key 2, or any key other than timer key 1.
It can also be used for mode setting and mode cancellation. In this case, it is preferable to use a key located as far away from the timer key 1 as possible from the standpoint of reliably eliminating the possibility of accidental operation. Furthermore, the keys for setting the above-mentioned protect timer recording mode do not necessarily have to be two types of keys, but may be three or more types, and the key is to prevent the mode from being accidentally canceled by children etc. It suffices if it is a combination of multiple types of keys.

Here, a method for detecting multiple types of key combination operations will be described with reference to FIG. 4.

In the figure, assuming that each intersection in the matrix is a key contact point (16 keys in the figure), the OUT command from the timer recording control unit 10 is transmitted as a pulse with a different timing for each row, as shown in the figure. Output. On the other hand, it is assumed that the IN signal to the timer recording control section 10 is a signal for each column.

In the above configuration, for example, whether two types of keys are operated simultaneously or consecutively is determined by outputting four types of OUT commands at different timings, and at least at the time T when these four types of OUT commands are output. , it can be detected by the presence of the N signal twice. 5. In the case of this embodiment, since the operation of the timer key 1 is essential, 1, for example, the contact at point a in the figure is the contact of the timer key 1 If there is an IN signal other than the IN signal generated by this contact,
It can be detected that the protect timer recording mode is set or canceled. Note that with this configuration, the mode can be set or canceled when the timer key 1 and any other key are operated. Furthermore, as described above, when using any key located further away than timer key 1 as another key, the configuration must be configured to determine whether or not there is another key-in signal among the IN signals. Good.

Also, as shown in FIG. 4, the OUT command is set to 0.0 for each line.
4, 8.12, and on the other hand, the IN signal is assigned a meaning for each column as 1, 2, 3.4, and the OUT+I
Depending on the value of N, select 1, 2, etc. from the leftmost key on the first row.・・・
・, 5, 6. Since the keys can be numbered as . . . , 12, 13, . . . 16, it is also possible to determine which key has been operated.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the gist of the present invention.

[Effects of the Invention] As explained above, according to the present invention, when the operation keys of multiple companies are operated in combination, the protect timer recording mode is set, and this can be canceled only by the operation using the combination of the multiple types of keys. Therefore, the timer recording mode will not be canceled due to mischief by children or the like, and the desired program can be reliably recorded, making it possible to provide a highly reliable video tape recorder.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the main parts of the device according to the embodiment of the present invention, FIG. 2 is a front view of the front panel of the device according to the embodiment shown in FIG. 1, and FIG. 3 is a timer recording of the device according to the embodiment shown in FIG. 1. FIG. 4 is a schematic explanatory diagram showing an example of a configuration for detecting combination operations of multiple types of operation keys, and FIG. 5 is a flowchart for explaining the timer recording operation of a conventional video tape recorder. This is a flowchart. DESCRIPTION OF SYMBOLS 1... Timer key, 2... Stop key, 3... Power key, 10... Timer recording control section, 20... Timer counter. Agent Patent attorney Inoue - (1 other person) Figure 1

Claims (2)

[Claims] (1) In a video tape recorder that performs timer recording operation based on the operation of a timer operation key, when the timer operation key and other operation keys are operated in combination, the protect timer recording mode is set. A video tape recorder further comprising a timer recording control means that accepts cancellation of the protect timer recording mode only when a combination of the plurality of operation keys is operated. (2) The video tape recorder according to claim 1, wherein the plurality of types of operation keys are arranged at spaced apart positions on the operation surface.