JP3075215B2 - Cursor control device and machine-readable recording medium recording program - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a technique for moving a cursor on a display, and more particularly to a technique for moving a cursor according to a control signal output from a remote controller.

[0002]

2. Description of the Related Art Moving a cursor using a remote controller has been conventionally performed, for example, when making a recording reservation on a video deck.

FIG. 4 is a block diagram showing a configuration example of a conventional cursor control device for moving a cursor on a screen of a display device in accordance with a control signal output from a remote controller.

Referring to FIG. 4, a conventional cursor control device 41 for controlling the movement of a cursor displayed on the screen of a display device 47 in accordance with a control signal output from a remote controller 46 includes a remote controller interrupt generation section 42 , A computer 4 including a CPU, etc.
3 is provided. The computer 43 includes a remote controller interrupt processing unit 44 and a cursor movement processing unit 4
Functions as 5.

[0005] The remote controller 46 has a plurality of keys such as a cursor key for instructing movement of a cursor and a power key for instructing power on / off. When a key is pressed by the user, a control signal corresponding to the pressed key is output at a predetermined cycle until the key is released.

For example, if the user presses a cursor key for instructing cursor movement, the remote controller 46 sends a control signal for instructing cursor movement at a predetermined cycle until the cursor key is released. Output.

The remote controller interrupt generator 42
When receiving the control signal instructed to move the cursor output from the remote controller 46, the controller outputs an interrupt signal corresponding to the received control signal.

The remote controller interrupt processing unit 44
Determines that cursor movement has been instructed based on the interrupt signal output from the remote controller interrupt generation unit 42, and outputs a cursor movement instruction to the cursor movement processing unit 45. Accordingly, the cursor movement processing unit 45 moves the cursor displayed on the screen of the display device 47 by a predetermined amount. The above processing is
This is performed every time a control signal instructing the movement of the cursor is output from the remote controller 46, and the cursor moves by a predetermined amount.

[0009]

In the above-mentioned prior art, the cursor is moved by a predetermined amount every time a control signal instructing the movement of the cursor is output from the remote controller. There was a problem that the speed was reduced. That is, the remote controller serially outputs a control signal consisting of a plurality of bits, and the number of bits of the control signal is a bit indicating which key of the plurality of keys is pressed. Or, since it must include a synchronization bit, the number becomes considerably large. For this reason, it is difficult to increase the cycle of the control signal output from the remote controller. As described above, since it is difficult to shorten the cycle of the control signal output from the remote controller, a conventional cursor control device that moves the cursor by a predetermined amount every time the control signal is output from the remote controller has a problem. The moving speed becomes slow.

In order to solve such a problem, it is conceivable to increase the amount of movement of the cursor when a control signal is received once. However, in this case, the movement of the cursor is unnatural. Problem arises.

It is an object of the present invention to enable a cursor to be moved quickly and smoothly in accordance with a control signal output from a remote controller.

[0012]

In order to achieve the above object, a cursor control device according to the present invention outputs a control signal for instructing movement of a cursor at a first cycle while a user presses a cursor key. A cursor control device that controls the movement of the cursor according to a control signal output from a remote controller that performs a cursor movement processing unit that moves the cursor by a predetermined amount each time a cursor movement instruction is input; An interrupt processing unit that outputs a cursor movement instruction to the cursor movement processing unit a plurality of times in a second cycle shorter than the first cycle every time a control signal instructing the cursor movement is output. ing.

In this configuration, every time a control signal instructing the movement of the cursor is output from the remote controller in the first cycle, the interrupt processing unit operates in the second cycle shorter than the first cycle. A cursor movement instruction is output to the cursor processing unit a plurality of times, and the cursor movement processing unit moves the cursor by a predetermined amount each time the cursor movement instruction is output from the interrupt processing unit.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a cursor control device according to the present invention. Referring to FIG. 1, a cursor control device 1 that controls movement of a cursor displayed on a screen of a display device 11 according to a control signal output from a remote controller 10 that instructs movement of a cursor includes a remote controller interrupt generation unit 2 And CP
A computer 3 including a U and the like, a timer interrupt generation unit 4, and a recording medium 5 are provided.

The computer 3 has a recording medium 5 on which a cursor control program is recorded. Recording medium 5
Is a magnetic disk, a semiconductor memory, and other recording media. The cursor control program recorded on the recording medium 5 is read by the computer 3, and by controlling the operation of the computer 3, an interrupt process comprising the remote controller interrupt processing unit 7 and the timer interrupt processing unit 8 is provided on the computer 3. The section 6 and the cursor movement processing section 9 are realized.

The remote controller 10 is provided with a plurality of keys such as a cursor key for instructing movement of a cursor displayed on the screen of the display device 11 and a power key for instructing power on / off. ing. When the key is pressed by the user, a control signal corresponding to the pressed key is output in the first cycle T1 until the key is released.

Upon receiving a control signal output from the remote controller 10, the remote controller interrupt generator 2 in the cursor control device 1 outputs a remote controller interrupt signal a corresponding to the received control signal.

The timer interrupt generation section 4 has a first cycle T
The timer interrupt signal b is output in the second cycle T2 (T2≪T1) shorter than 1.

Remote controller interrupt processing unit 7
Has a function of setting a control signal reception flag when a remote controller interrupt signal a output from the remote controller interrupt generation unit 2 is received, or when the received remote controller interrupt signal a is an instruction to move a cursor. It has a function of setting a cursor movement instruction flag.

The timer interrupt processing section 8 receives the timer interrupt signal b from the timer interrupt generation section 4 in the second cycle T2.
Each time is output, a function for checking whether or not a control signal has been received for a predetermined time t or more using a control signal reception flag, and a cursor movement instruction when a control signal has not been received for a predetermined time t or more. It has a function of releasing the flag, and otherwise outputting a cursor movement instruction to the cursor movement processing unit 9 on condition that the cursor movement instruction flag is set.

The cursor movement processing section 9 has a function of moving the cursor displayed on the screen of the display device 11 by a predetermined amount each time a cursor movement instruction is output from the timer interruption processing section 8.

FIG. 2 is a flowchart showing a processing example of the remote controller interrupt processing section 7, and FIG. 3 is a flowchart showing a processing example of the timer interrupt processing section 8. The operation of this embodiment will be described below with reference to the drawings. I do.

When a key is pressed by the user, the remote controller 10 outputs a control signal corresponding to the pressed key in the first cycle T1 until the key is released.

When the remote controller interrupt generation section 2 in the cursor control device 1 receives the control signal for instructing the movement of the cursor output from the remote controller 10, it outputs a remote controller interrupt signal a corresponding to the control signal.

As a result, the remote controller interrupt processing section 7 in the interrupt processing section 6 sets a control signal reception flag as shown in the flowchart of FIG. 2 (S1). Thereafter, the remote controller interrupt processing section 7 determines whether or not the control signal output from the remote controller 10 is for instructing the movement of the cursor based on the remote controller interrupt signal a (S2). Then, when it is determined that the control signal output from the remote controller 10 is for instructing the movement of the cursor (YES in S2), the process is terminated after setting the cursor movement instruction flag (S3). On the other hand, S
If the determination result of step 2 is NO, the remote controller interrupt processing unit 7 performs a process according to the type of the control signal output from the remote controller 10 (S4), and ends the process.

Each time a control signal is output from the remote controller 10 in the first cycle T1, the remote controller interrupt processing unit 7 performs the above-described operation, while the timer interrupt processing unit 8 Each time the timer interrupt signal b is output in the second period T2 from the time t1, the processing shown in the flowchart of FIG.

Referring to FIG. 3, when timer interrupt signal b is output from timer interrupt generating section 4, timer interrupt processing section 8 determines whether or not a predetermined time t has elapsed since the control signal could not be received. It is determined using the control signal reception flag (S11).

Here, the processing in S11 will be described in detail. First, the timer interrupt processing section 8 checks whether or not the control signal reception flag is set. When the control signal reception flag is set, it is determined that the predetermined time t has not elapsed since the control signal cannot be received. When it is determined that the control signal reception flag is set, the count value of the counter described later is set to “0”.
Is also performed.

On the other hand, when the control signal reception flag is not set, the counter for checking whether or not the predetermined time t has elapsed is incremented, and the count value after the increment exceeds the threshold Th. Check if there is. Here, the value of the threshold Th is set to Th = t / T2. If it is determined that the threshold value Th has not been exceeded, it is determined that the predetermined time t has not elapsed since the control signal could not be received. On the other hand, if it is determined that the threshold value Th is exceeded, it is determined that the predetermined time t has elapsed since the control signal cannot be received.

If it is determined in S11 that the predetermined time t has not elapsed (S11: NO), it is determined whether the cursor movement instruction flag is set (S11).
13) If it is set (YES in S13), a cursor movement instruction is output to the cursor movement processing unit 9, and after the control signal reception flag is cleared (S14, S15), the processing is performed. To end. When the cursor movement instruction is output from the timer interrupt processing unit 8, the cursor movement processing unit 9 moves the cursor displayed on the screen of the display device 11 by a predetermined amount. On the other hand, when the cursor movement instruction flag is not set (S13: NO), the control signal reception flag is canceled (S15), and the process is terminated.

If it is determined in step S11 that the predetermined time t has elapsed (YES in step S11), the cursor movement instruction flag is released, and the control signal reception flag is released. After that (S12, S15), the process ends.

Next, the user operates the remote controller 10.
The operation performed when the cursor key provided in is pressed will be described.

When the user presses the cursor key, the remote controller 10 outputs a control signal for instructing the cursor to move in the first cycle T1. The remote controller interrupt generator 2 outputs a remote controller interrupt signal a corresponding to the control signal instructing the movement of the cursor in the first cycle T1. Further, each time the remote controller interrupt signal a is added in the first cycle T1, the remote controller interrupt processing unit 7 sets a control signal reception flag and further sets a cursor movement instruction flag (YES in S1 and S2, YES in S2). S
3).

On the other hand, in the timer interrupt processing section 8, the second cycle T2 (T2≪T1)
Each time the timer interrupt signal b is output, the processing shown in FIG. 3 is performed.

Remote controller interrupt processing unit 7
However, when the timer interrupt signal b is first added after the control signal reception flag is set, the control signal reception flag and the cursor movement instruction flag are set, so that S
The determination results in S11 and S13 are NO and YES, respectively. As a result, the remote controller interrupt processing unit 7
Outputs a cursor movement instruction to the cursor movement processing unit 9 and then performs control signal reception flag release processing (S
14, S15). Thereafter, during a period in which the predetermined time t has not elapsed since the control signal is no longer received (S11 is N
O), every time the timer interrupt signal b is added from the timer interrupt generation unit 4 in the second cycle T2, the timer interrupt processing unit 8 performs a cursor movement process and a control signal release process (S14, S15). Then, when the predetermined time t has elapsed (YES in S11), the timer interrupt processing unit 8 releases the cursor movement instruction flag (S12), and then proceeds to S15.
Is performed.

As described above, every time the control signal for instructing the movement of the cursor is output from the remote controller 10 in the first cycle T1, the timer interrupt processing section 8 in the interrupt processing section 6 sets the first cycle T1. A second period T shorter than
2, the cursor movement instruction is output to the cursor movement processing unit 9 a plurality of times (t / T2 times).
Even if the amount of cursor movement per one cursor movement instruction is reduced and the movement of the cursor is made smooth, the movement speed of the cursor can be made sufficient. Here, there is a relationship between the first and second periods T1 and T2 and the above-mentioned predetermined time t. Even if there is a slight overrun when the finger is released from the cursor key, it is desired to increase the moving speed of the cursor. In this case, it suffices to set T2≪t ≒ T1. In addition, even if the moving speed of the cursor is slightly slower than the above case, and it is desired to reduce the overrun,
What is necessary is to satisfy the relationship of T2 <t <T1.

[0038]

An advantage of the present invention is that the cursor can be moved quickly and smoothly according to a control signal output from the remote controller.

The reason is that every time a control signal for instructing the cursor movement is output from the remote controller in the first cycle, the cursor movement processing unit is controlled in the second cycle shorter than the first cycle. This is because an interrupt processing unit that outputs a cursor movement instruction a plurality of times is provided. That is, even if the cursor movement amount in the cursor movement processing unit is reduced so that the cursor movement becomes smooth, the cursor movement processing unit outputs the cursor multiple times in a short cycle every time the control signal is output once. Since the movement instruction is output, the cursor can be moved quickly and smoothly.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a processing example of a remote controller interrupt processing unit 7;

FIG. 3 is a flowchart illustrating a processing example of a timer interrupt processing unit 8;

FIG. 4 is a block diagram of a conventional example.

[Explanation of symbols]

 1, 41 cursor control device 2, 42 remote controller interrupt generator 3, 43 computer 4 timer interrupt generator 5 recording medium 6 interrupt processing unit 7, 44 remote controller interrupt processing unit 8 timer interrupt processing Unit 9, 45: Cursor movement processing unit 10, 46: Remote controller 11, 47: Display device

Claims (4)

(57) [Claims] 1. A cursor for controlling the movement of a cursor in accordance with a control signal output from a remote controller for outputting a control signal for instructing the movement of the cursor in a first cycle while the user is pressing a cursor key. In the control device, each time a cursor movement instruction is input, a cursor movement processing unit that moves the cursor by a predetermined amount, and each time a control signal instructing movement of the cursor is output from the remote controller, A cursor control device comprising: an interrupt processing unit that outputs a cursor movement instruction to the cursor movement processing unit a plurality of times in a second period shorter than the period of the cursor control unit. 2. A cursor movement in accordance with a control signal instructing the movement of a cursor output from a remote controller having a plurality of keys and outputting a control signal corresponding to a key pressed by a user in a first cycle. In a cursor control device that controls a, every time a control signal output from the remote controller is received, a control signal reception flag is set, and when the received control signal is for instructing movement of a cursor,
A remote controller interrupt processing unit for setting a cursor movement instruction flag; a cursor movement processing unit for moving a cursor by a predetermined amount each time a cursor movement instruction is input; and a second cycle shorter than the first cycle. A timer interrupt generating unit that outputs a timer interrupt signal, and, whenever a timer interrupt signal is output from the timer interrupt generating unit, whether a control signal has been received for a predetermined time or more using the control signal reception flag is determined. Inspect, if not received for a predetermined time or more, the cursor movement instruction flag
And release of the control signal reception flag.
Performs the processing, otherwise, the line processing for by that cursor movement instruction flag is set to the condition, and outputs the cursor movement instruction to the cursor movement processing unit
Irrespective of the state of the cursor movement instruction flag.
And a timer interrupt processing unit for canceling the control signal reception flag . 3. A process for moving a cursor in accordance with a control signal output from a remote controller which outputs a control signal for instructing movement of a cursor in a first cycle while the user is pressing a cursor key. A recording medium on which a program for causing a computer to execute the program is recorded, the computer comprising: a cursor movement processing unit configured to move a cursor by a predetermined amount each time a cursor movement instruction is input; A machine that records a program for functioning as an interrupt processing unit that outputs a cursor movement instruction to the cursor movement processing unit a plurality of times in a second cycle shorter than the first cycle every time a signal is output. A readable recording medium. 4. A cursor is moved in accordance with a control signal for instructing cursor movement, output from a remote controller having a plurality of keys and outputting a control signal corresponding to a key pressed by a user in a first cycle. A recording medium that records a program for causing a computer to perform a process for causing the computer to execute the processing, wherein each time a control signal output from the remote controller is received, a control signal reception flag is set and received. If the control signal directs the cursor to move,
A remote controller interrupt processing unit for setting a cursor movement instruction flag; a cursor movement processing unit for moving a cursor by a predetermined amount each time a cursor movement instruction is input; a timer interrupt at a second cycle shorter than the first cycle. Each time a timer interrupt signal is output from a timer interrupt generating unit that outputs a signal, it is checked whether a control signal has been received for a predetermined time or more by using the control signal reception flag. Performs the cancel processing of the cursor movement instruction flag and receives the control signal.
Perform the release processing of the communication flag , otherwise, on the condition that the cursor movement instruction flag is set,
Performing a process of outputting a cursor movement instruction to the cursor movement processing unit;
Release processing of the control signal reception flag regardless of the state of
Recorded machine-readable recording medium a program for functioning as a timer interrupt processing unit for performing.