JPS63291243A - Key operating device - Google Patents

Abstract

PURPOSE:To prevent the unexpected mis-operation of a key or disturbance by the operation of another person from being generated, by prohibiting the change of an operating mode by a key operation by setting a personal identification number from ten keys, and enabling the change of the operating mode to be performed by an operating key only when the same personal identification number is inputted. CONSTITUTION:The operating keys 19a-19f to set the operating mode and the ten keys 19g are provided. A means to store an arbitrary personal identification number set by the ten keys 19g, and an operating means 19i to fix the operating mode and to prohibit the change of the operating mode by the operating keys 19a-19f are provided. Also, the means to decide coincidence between a number numeral inputted from the ten keys 19g in the fixed state of the operating mode and the personal identification number, and the means to cancel the fixture of the operating mode and to enable the change of the operating mode to be performed by the operating keys 19a-19f based on the decision of the coincidence are provided. Therefore, it follows that the change of the operating mode is prohibited until a correct personal identification number is inputted next when the operating mode is fixed once. In such a way, it is possible to prevent the mis-operation from being generated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a key operation device for a tape recorder or the like, and is particularly suitable for use in a device equipped with a human keypad.

(Summary of the invention) This is a key operation device that sets a password using a numeric keypad, makes it impossible to change the operation mode using the operation keys, and then allows the operation mode to be changed using the operation keys only when the same password is input. .

[Conventional technology]

Many audio tape recorders and video tape recorders use electronic touch buttons or short-stroke electric contact keys to switch modes, and remote controllers for these devices also generally use touch buttons or short-stroke keys. There is.

[Problem that the invention seeks to solve]

Recording may be interrupted if you accidentally touch the stop button or cassette eject button during recording. Especially if you accidentally place something on the remote controller, it may go into stop or eject mode.

Another problem is that another person may press the stop button or eject button without knowing that recording is in progress.

In view of this problem, it is an object of the present invention to prevent interference caused by unexpected erroneous key operations or operations by others.

[Means for solving problems]

The key operation device according to the present invention includes operation keys 19a to 19f for setting the operating mode of a device such as a tape recorder, and a numeric keypad 19g. A means (system controller 10) for storing an arbitrary password set using the numeric keypad 19g, and an operation means (pass number mode key 19i) for fixing the operation mode and making it impossible to change the mode using the operation keys 19a to 19f. It is a provision. Further, there is a means for determining whether the number inputted from the numeric keypad 19g matches the above-mentioned password while the operation mode is fixed; Means for enabling mode changes are provided.

[Operation] -H Once the operating mode is fixed, the operating mode cannot be changed until the next correct password is entered, so erroneous operations can be prevented.

〔Example〕

FIG. 1 shows a block diagram of the main parts of a digital audio tape recorder to which the present invention is applied.

The audio signal supplied from the audio input terminal 2 of the tape recorder main body 1 is converted into a digital signal and modulated by the recording system circuit 3, and is then transferred from the R side of the recording/playback switch 4 to the two channels of rotation. and recorded on the magnetic tape 6. During reproduction, the outputs of the rotary disks 5a and 5b are supplied from the P side of the changeover switch 4 to the reproduction circuit 7, where they are demodulated and converted into analog signals, and then output to the power amplifier via the audio output terminal 8.

The rotating heads 5a and 5b are rotationally driven by a drum motor 12 controlled by a drum servo circuit 11. Tape reels 16,17 are also driven by reel motors 14,15 controlled by reel drive circuit 13. These drum servo circuit 11 and reel drive circuit 13 are controlled by operating keys 19 provided on the panel of main body 1.
A system controller 10 (microcomputer) that senses key operations is controlled so that modes (recording, playback, stop, fast forward, rewind, etc.) corresponding to key operations occur.

A remote controller 20 is attached outside the main body 1,
By operating that key, the key encoder 20A
A command signal is transmitted from the light emitting element 21 to the light receiving element 22 of the main body 1 via the transmitting circuit 20B. The light reception signal from the light receiving element 22 is decoded by the receiving circuit 23 and supplied to the system controller 10, where the head drum and tape reel are controlled in a corresponding mode. Note that the tape amount count value and the like are displayed on the display 18.

FIG. 2 shows the panel surface of the tape recorder main body 1. On the main body panel surface, there are an eject key 19a and a stop key 1.
9b, a play key 19c, a fast forward key 19d, a rewind key 19e, and a recording key 19f. Also provided are a numeric keypad 19g and an enter key 19h for random music selection and tape editing. Like a general tape recorder, there are 30 cassette pockets, 31 recording volumes, and 3 earphone jacks.
2, etc., and the display 18 has a numerical display section 18a.
and mode display sections 18b and 18c.

FIG. 3 shows the panel surface of the remote controller 20,
Operation keys 203 to 20f1 corresponding to the main body side and numeric keypad 2
0g and an enter key 20h.

The bus number mode key 191 provided on the main body panel is
Enter your password (pass number) to operate the operation keys 19a to 19f.
Used to set the pass number mode to enable input. In the pass number mode, registration of pass numbers, verification, key locking, unlocking, etc. are executed according to the program of the system controller 10. Note that a key 20i corresponding to the pass number mode key 19i is also provided on the remote controller 20, and the same operation can be performed using the remote controller 20.

The operation and usage of the pass number mode will be explained with reference to the flowchart of FIG.

First, in the key lock routine (A), it is determined whether or not the pass number mode key 191 (on the main body side) or 20i (on the remote control side) is pressed in normal operation (stop mode or recording/playback mode) (step S1 ), when pressed, the display 18 is turned on in step S2, the pass number mode display section 18b lights up, and the input pass number can be displayed on the numeric display section 18a.

Here, when a 4-digit pass number is input using the numeric keypad 19g and then the enter key 19h is pressed (steps s3, s4), the input pass number is registered in the memory of the system controller 1o (step 55). )0 Next, the current operating mode of the recorder is determined in step S6, and if the mode is other than stop mode (for example, recording or playback), key lock is executed in step S9. Also step S
At step 10, the pass number display is turned off and the pass number mode display section 18b is in a blinking state. As a result, reception of all operation keys 19 including the eject key 19a and stop key 19b is prohibited, and a key lock state is established.

Further, when the current operation mode is the stop mode, the next step S7 waits for input of an operation mode such as recording or playback, and if an operation other than the stop key 19b is performed, the process branches from step s8 to s9. Key lock processing is performed in the same manner as described above.

As a result of the above, mode changes due to erroneous operations of the operation keys 19a to 19f or operations by others do not occur, and the once set recording mode etc. can be maintained.

Next, in the key lock release routine of FIG. 4(B), if it is determined in step S11 that the current pass number mode is set, the input of a four-digit pass number is detected in step S12, and the input pass number is detected in step S12. The number is displayed on the display 18 (step 513), and when the enter key 19i is pressed at the end of inputting the pass number, this is detected in step S14, and step S15 of comparing the input pass number with the registered pass number is executed. . If it is determined that they match (step 516), key lock release processing (step 51)
7) is performed, and it becomes possible to input operation keys such as the stop key 19b (step 818).

As described above, the operating mode cannot be changed unless the correct pass number is input. If the input pass number and the registered pass number do not match, the process returns to the main routine from step 316 and the current operating mode is maintained.

Note that the embodiment is not limited to the above-mentioned embodiment, and various modifications are possible. In this case as well, the key lock will be released based on the pass number verification results as in Figure 4B. Also, if you forget the pass number, the key lock will be released by turning off the power. The pass number may be programmed, and the pass number may be less than 4 digits or more than 4 digits.

〔Effect of the invention〕

As described above, the present invention is designed such that after the operating mode of the device is fixed (locked), the operating mode cannot be changed unless the password is entered. In equipment using a tape recorder, the operating mode cannot be changed by accidentally touching a key, and the operating mode cannot be changed by another person. Unexpected accidents such as interruptions can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a schematic block diagram of an audio tape recorder to which the present invention is applied, Fig. 2 is a front view showing the operation panel of the tape recorder main body, Fig. 3 is a plan view of the remote controller, and Fig. 4 is a path number. It is an operation flowchart of the mode. In addition, in the symbols used in the drawings, 1--・------------------Tape recorder main body 2--- 3-・-・−・−・−・・Recording circuit 5a, 5
b---------・One rotation head 6---------・・
−・−・・・−・Magnetic tape 7−・−−−−−1−−
−−−・−・−Reproduction circuit 8−−−−−・−・・−
...-----Audio output terminal 10.20...--
...-System controller 11 -・-・−・・−
・-Drum servo circuit 12, 14, 15------
−Drum motor 13 −・−・−・−−−−−−−Reel drive circuit 16.17 −−−−−−・−・−・
Reel 18 ------------- Display 19----------------- Operation key 19g ---
-------------Numeric keypad 19i ------
-----------Pass number mode key.

Claims (1)

[Claims] Operation keys for setting the device's operating mode, a numeric keypad,
A means for storing an arbitrary password set using the numeric keypad, an operating means for fixing the operating mode and making it impossible to change the mode using the operating keys, and a means for storing the PIN number entered using the numeric keypad while the operating mode is fixed. A key operating device comprising: means for determining a match with the above-mentioned password; and means for releasing the fixation of the operation mode based on the match determination, and enabling a mode change using the operation key.