JP2535832B2 - Electronics - Google Patents

Description

The present invention relates to an electronic device mode processing circuit.

[Outline of Invention]

According to the present invention, in an electronic device that causes a mode transition in response to an input command from the outside, the input command is input in the form of a mode, optimized and stacked, and the mode transition is executed according to the stack information. The command processing time is greatly reduced.

[Conventional technology]

The VTR has various operation modes such as a play mode and a rewind mode, but when changing these operation modes, it is necessary to switch the mechanism such as turning on / off of a brake or a pinch roller.

When this mechanism is switched, it can be switched almost instantly by using a plunger.However, when a plunger is used, a considerably large current flows at the time of startup, and moreover, it is necessary to keep the current flowing during steady state. Therefore, the power supply circuit becomes large and the power consumption becomes large.

Therefore, it is considered to use a motor instead of the plunger. That is, if a motor is used, by using a gear together, it is possible to obtain a driving force required for switching the mechanism even with a small motor, reduce power consumption, and reduce the size of the power supply circuit. Can be converted.

However, when switching the mechanism using the motor in this way, it takes time to switch (switch) the mode. For example, from the stop mode to the playback mode, it takes about 2 seconds from the playback mode to the stop mode. 1.5 seconds It takes about 1.8 seconds from stop mode to recording mode.

Therefore, when pressing the first operation key and then the second operation key, the operation of the second operation key must be waited until the mode transition by the first operation key is completed.

However, this is very inconvenient to use, so a method of stacking the input of operation keys has been considered.

That is, as shown in FIG. 10, the time t ₁ earlier VTR is in stop mode, and pressing the recording key at time t _1. Then, the VTR (mechanism) mode is set at the time t.
Transition from ₁ to recording mode.

If, for example, the stop key is pressed at time t ₂ during this transition, this stop key is valid for the recording mode that is the mode after the transition, so it is necessary to enter the stop mode after the transition. It is stored in the stack.

When the transition to the time t ₃ is completed, the VTR enters the recording mode, this time, instruction of the stop mode stored from the mode stack time t ₂ is taken out, which is put into action.

Therefore, the VTR transits to the stop mode from the time point t ₃ and enters the stop mode from the time point t ₄ . It should be noted that even if the pause key is pressed at the time point t ₅ in the stop mode, this is not executed because the pause mode has no meaning in the stop mode.

Therefore, according to this stack method, it is possible to eliminate the operational trouble that the next operation key must not be pressed (it is ignored even if it is pressed) until the mode transition of the VTR is completed.

[Problems to be solved by the invention]

However, in the stack method described above, for example, as shown in FIG. 11, after pressing the stop key at time t ₂ ,
If you press the pause key to t _a , this pause key is effective for the recording mode that is the mode after transition (if you press the pause key in recording mode, it becomes the recording pause mode), so the modes stored in the mode stack are , The stop mode is updated to the recording pause mode.

Therefore, from the point in time t ₃ VTR we continue to transition to the recording pause mode, and from the time t ₄ and the recording pause mode.

However, this is a different operation mode from the case of FIG. 10 even if the operation sequence of the stop key and the pause key is the same.

That is, if you press more than one valid operation key during a mode transition, the mode stored in the mode stack will be updated with the last operation key you pressed, and all previously pressed keys will be ignored. I will end up. Therefore, the operation mode is changed to a different operation mode depending on the timing of pressing the operation key (whether during the mode change or after the change).

The present invention is intended to solve such a problem.

[Means for solving problems]

Therefore, in the present invention, the stack method is adopted and the mode stack has a plurality of levels. Then, when a mode is input, the modes are sequentially stored in the mode stack, and at this time, the stored modes are optimized, and meaningless modes are removed from the mode stack. Then, the modes remaining in the mode stack are executed in order from the oldest one.

[Action]

The input mode at that time transitions to the target mode in the shortest time.

〔Example〕

Fig. 1 shows the hardware related to the mode transition of the VTR. (1) is the mechanism control part, which is the loading motor (11) for loading and unloading the tape, and the VTR (mechanism) mode. And a servo circuit (13) for the drum and capstan.

Further, (2) is a mode controller composed of a microcomputer, the output of which is supplied to the control unit (1) to set each operation mode, and the control unit (1) indicates its state (mode). The signal is supplied to the controller (2).

Further, (3) is a key input means having respective operation keys, and (4) is a receiving circuit for receiving an operation key signal from the remote controller when operating the VTR by remote control. These circuits (3) ，
The key input signal from (4) is supplied to the controller (2). Further, (5) is a mode display means, which displays the VTR mode by the output of the controller (2).

The mode stack is formed in the RAM of the microcomputer that constitutes the controller (2).

Then, when the operation key of the input means (3) or the operation key of the controller of the remote controller is pressed, this is processed by the controller (2), and the processing result is supplied to the control unit (1) so that a predetermined operation mode is set. Control unit (1)
Is controlled and the mode is displayed by the display means (5).

FIG. 2 shows an example of a mode transition and a change of stack contents in response to a key input of the operation key.

In the following description, the current mode is the VTR (mechanism) mode at that time, and the transition destination mode during the transition.

Final mode: This is the last mode stored in the controller (2) at that time, and when no mode is stacked in the mode stack, it becomes the same as the current mode. Whether the pressed operation key is valid depends on whether it is valid for this final mode. Further, the final mode is displayed on the display means (5).

Is.

That is, in this example, since the VTR is in the stop mode before the time t ₁ , the current mode is, of course, the stop mode, the mode stack is empty, and the final mode and the display are in the stop mode. is there.

Then, when the record key is pressed at the time point t ₁ , this is valid for the final mode (stop mode), so that the “record mode” is stored in the first stage of the mode stack. But the VTR
Is not in transition, the transition from the stop mode to the recording mode is immediately started, and the display is in the recording mode. In addition, the "recording mode" of the mode stack is removed.

Then, when the stop key is pressed at the time point t ₂ during the transition, since this is effective for the final mode (recording mode), the “stop mode” is stacked on the first stage of the mode stack, and the final mode and the display are displayed. Is in stop mode. However, the VTR itself is in transition to the recording mode (current mode) by key input at time t ₁ .

Then, when the pause key is pressed at time t ₃ during this transition,
This is invalid for the final mode (stop mode),
This key input is ignored and the mode stack, final mode and display remain.

Then, when the rewind key is pressed at the time point t ₄ during the transition, since this is valid for the final mode (stop mode), the “rewind mode” is stacked on the second stage of the mode stack and the final The mode and display are set to the rewind mode. However, the VTR itself is in transition to the recording mode (current mode) by key input at time t ₁ .

Furthermore, if the stop key is pressed at time t ₅ during this transition, since this is valid for the final mode (rewind mode), the “stop mode” is stacked in the third stage of the mode stack. Since the same "stop mode" is stacked in the first stage of the mode stack, the "stop mode" and "rewind mode" of the first and second stages of the mode stack are removed, and the third "stop mode" of the mode stack is removed. The "stop mode" of a stage is transferred to its first stage. Note that this processing is an example of “optimization”.

 The final mode and the display are set to the stop mode.

Then, when the play key is pressed at the time point t ₆ during the transition, since this is valid for the final mode (stop mode), the “play mode” is stacked on the second stage of the mode stack and the final mode and The display is in playback mode.

Furthermore, if you keep pressing the fast forward key from time t ₇ during the transition, this is valid for the final mode (playback mode), and the operation of the fast forward key in the playback mode is the cue mode. The "cue mode" is stacked in three stages, and the final mode and display are the cue mode.

Then, at time t ₈ , when the transition to the recording mode keyed at time t ₁ is completed, the mode stack is checked, and in this case, the “stop mode” is stacked on the first stage of the mode stack. Since it is set to the current mode, the operation mode of the VTR transits from the time point t ₉ (t ₈ ) to the stop mode. When the transition to the stop mode is confirmed, the second stage "reproduction mode" of the mode stack is transferred to the first stage, and the third stage "queue mode" is transferred to the second stage. The third stage is colored.

Then, at the time t ₁₀ , when the transition to the stop mode ends, the mode stack is checked, and in this case, since the “playback mode” is tucked at the first stage of the mode stack, this is set to the current mode. Then, the operation mode of the VTR transits from the time point t ₁₁ (t ₁₀ ) to the reproduction mode. Then, when the transition to the stop mode is confirmed, the "queue mode" of the second stage of the mode stack is transferred to the first stage, and the second stage is made empty.

Then, at the time t ₁₂ , when the transition to the playback mode is completed, the mode stack is checked, and in this case, since the “queue mode” is stacked in the first stage of the mode stack, this is set to the current mode. Then, the operation mode of the VTR transits from the time point t ₁₃ (t ₁₂ ) to the queue mode. When the transition to the cue mode is confirmed, the mode stack is made empty. Thus, the queue mode is set after the time point t ₁₃ .

The above is an example of the mode transition and the change of the stack contents, and this is shown in FIG. 3 by a general algorithm.

That is, this algorithm is also a flow chart of a program executed by the microcomputer that constitutes the mode controller (2). Then, in step (21), it is checked whether or not there is an input by the operation key, and if there is a key input, the processing of the microcomputer (controller (2)) proceeds from step (21) to step (22). ), It is checked whether the key input checked in step (21) is valid or invalid for the final mode. This check is performed, for example, according to a mode transition table as shown in FIG. 4, and this table determines that the recording key is invalid when the recording key is pressed when the final mode is the reproduction mode. However, when the pause key is pressed, it is determined that the pause key is valid and the final mode should be updated to the reproduction pause mode.

When it is determined in step (22) that the key input is valid, the process proceeds from step (22) to step (23) and, for example, at time t _{4 in} FIG. 2 according to the mode transition table.
And as shown in FIG. 5 (in FIGS. 5 to 9, A
The final mode and the display are updated, and the updated mode is stored in the mode stack.

Subsequently, the process proceeds to step (31), and in this step (31), it is checked whether or not there is the same mode as the updated final mode in the mode stack, and if not, the process proceeds from step (31) to step (33). ), But at some point the process proceeds from step (31) to step (32), in which the update in the mode stack is performed, for example, at time t _{5 in} FIG. 2 and in FIG. From the same mode as the final mode (B mode of the second stage) to the mode of the stage immediately before the final stage of the mode stack (D mode) are removed as unnecessary modes, and the updated final mode is It is packed to the previous stage of the mode stack (the stack is made shallow). Note that this is part of "optimization".

Next, the process proceeds to step (32) (or step (3
1)) to step (33), and this step (33)
In, in the mode stack, it is checked whether or not there is a mode that can transit to the final mode. If not, the process proceeds from the process step (33) to the step (41), and if there is, the process step (33) proceeds to the step (34). In this step (34), for example, as shown in FIG. 7, the mode between the mode (B mode) capable of transiting to the final mode in the mode stack and the final mode (E mode) is removed, and the final mode is removed. The mode is packed to the previous stage of the mode stack. Note that this is also a part of “optimization”.

Then, the process proceeds from step (34) (or step (33)) to step (41). In addition, when there is no key input in step (21), and in step (2
When it is determined that the key input is invalid in 2), the process proceeds from step (21) or (22) to step (41).

Then, in step (41), it is checked whether the mechanism is in the transition or the transition end, and when the mechanism is in the transition, the process proceeds from step (41) to step (42), in which the mode is set. It is checked whether or not there is the same mode in the stack as the mode in transition of the mechanism (current mode), and if not, the process proceeds from the processing step (42) to the step (44), and if there is, the processing step (42) to the step (44). 43), in this step (43), for example, as shown in FIG. 8, from the mode of the first stage of the mode stack to the same mode (C mode) as the mode in transition is removed, and The mode is packed to the front. Note that this is also a part of “optimization”.

Then, the process proceeds to step (43) (or step (4
2)) to step (44) and proceed to this step (44)
In the mode stack, it is checked whether or not there is a mode that can transit from the mode in transition of the mechanism (current mode). If there is no mode, the process proceeds to step (4
After returning from step 4) to step (21), the process proceeds from step (44) to step (45) in some cases. In this step (45), for example, as shown in FIG. From the mode that can be transitioned from
The first stage mode (C mode) is removed, the second stage mode is packed to the first stage to perform "optimization", and then the process returns to step (21).

When it is determined in step (41) that the mechanism transition has ended, the process proceeds to step (4
From step 1) to step (51), in this step (51) it is checked whether or not the mode is still stacked in the mode stack. If the mode is not stacked, the process proceeds from step (51) to step (2).
Returning to 1), when the modes are stacked, the process proceeds from step (51) to step (52) in which the transition from the current mode of the mechanism to the first mode of the mode stack is performed. When this is started, the mode of the first stage of the mode stack is removed when this is confirmed, the mode of the latter stage is packed to the former stage, and then the process returns to step (21).

Therefore, according to the above processing routine, the mode transitions, for example, as shown in FIG.

The key input check in step (21) can be executed by a condition judgment command without using the mode transition table. Furthermore, in the above, although it is the case of VTR, it is a tape deck, a video disc player, a CD.
The present invention can be applied to any electronic device such as a player that requires time to change modes.

〔The invention's effect〕

According to the present invention, the modes to be transited are stacked and optimized, and as the first optimizing means, various types stored in order of the level in the storage means composed of the plurality of levels during the transition of the current operation mode. It is determined whether or not an input command of the same operation mode as the operation mode is input, and the storage position of the final operation mode in the storage means by the input command is moved to the previous level or thinned,
During the transition of the present operating mode, the optimizing means judges whether or not there is a mode capable of moving to the final operating mode input by the input command, among the various operating modes stored in the storage means composed of the plurality of levels of levels. , The storage position of the final operation mode input by the input command in the storage means is moved to the previous level or decimated, and the third optimizing means consists of the plurality of levels during the transition of the current operation mode. It is determined whether there is a current operation mode in transition among various operation modes stored in the storage means in order of level,
The storage position of the current operation mode during transition stored in the storage means is removed up to the previous stage, and the subsequent stage is moved to the previous stage. It is judged whether or not there is an operation mode that can transit from the current operation mode in transition among the various operation modes stored in the storage means consisting of levels, and the previous stage of the storage position of the transitionable operation mode is removed, and the latter stage is replaced by the former stage. Since the mode is moved to, the mode at the time of pressing the operation key can transit to the target mode in the shortest time.

In addition, operation key reception and mode display are executed immediately if the key input is valid, and mode transition is also performed in the shortest time, so the user does not feel the delay of transition, Apparently, the transition time can be eliminated.

Furthermore, the final mode is the same no matter what timing the operation key is pressed.

[Brief description of drawings]

FIG. 1 is a system diagram of an example of the present invention, and FIGS. 2 to 11 are diagrams for explanation thereof. (1) is a mechanism controller, (2) is a mode controller, (3) is a key input means, and (5) is a mode display means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keiichiro Shimada 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Within Sony Corporation (56) Bibliographic references Sho 61-115207 (JP, U)

Claims (4)

(57) [Claims] 1. A storage means having a plurality of levels for sequentially storing an input command as various operation modes, and various storage means sequentially stored in the storage means having the plurality of levels during transition of a current operation mode. And an optimizing means for judging whether or not an input command of the same operation mode as the operation mode has been input, and moving or thinning out the storage position of the final operation mode in the storage means to the preceding level by the input command. An electronic device characterized in that the final operation modes stored in a plurality of levels of the storage means are sequentially taken out and executed after the transition of the current operation mode. 2. A storage means having a plurality of levels for sequentially storing input commands as various operation modes, and various operation modes stored in the storage means having a plurality of levels during the transition of the current operation mode. It is determined whether or not there is a mode capable of moving to the final operation mode input by the input command, and the storage position of the final operation mode input by the input command in the storage means is moved to the previous level or thinned out. An electronic device comprising: an optimizing means, wherein the final operation modes stored in a plurality of levels of the storage means are sequentially taken out and executed after the transition of the current operation mode. 3. A storage means having a plurality of levels for sequentially storing an input command as various operation modes, and various storage means sequentially stored in the storage means having the plurality of levels during the transition of the current operation mode. An optimizing means for judging whether or not there is a transitioning current operation mode among the operation modes, removing up to the previous stage of the storage position of the current operating mode under transition stored in the storage means, and moving the subsequent stage to the previous stage; An electronic device comprising: a final operation mode sequentially stored in a plurality of levels of the storage means and executed after the transition of the current operation mode. 4. A storage means having a plurality of levels for sequentially storing input commands as various operation modes, and various operation modes stored in the storage means having a plurality of levels during the transition of the current operation mode. An optimization means for determining whether there is an operation mode capable of transition from the current operation mode during transition, removing up to the previous stage of the storage position of the transitionable operation mode, and moving the subsequent stage to the previous stage, An electronic device characterized in that the final operation levels stored in the plurality of levels of the storage means are sequentially taken out and executed after the transition of the current operation mode.