KR100604603B1 - Key recognition system and method - Google Patents

Abstract

The present invention relates to a key recognition system and method, wherein a long key is used for keys whose previous keystroke state is 'key pressed' and the current keystroke state is 'key pressed'. ) Checking the count value, processing long key events for keys equal to the value obtained by dividing the pooling period from the reference value where the long key count value is recognized as a long key. By requesting execution as a UI task, it enables efficient longkey recognition using minimum timer resources.

Key Recognition, Long Key, Handset Task, UI Task

Description

Key recognition system and method

1 is a block diagram according to an embodiment of a key recognition system according to the present invention.

2A and 2B are flowcharts of a key recognition method according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: key recognition system 110: first keystroke information

120: second key stroke information 130: long key count information

140: key scan signal processing unit 150: previous key stroke state inspection unit

160: current keystroke state inspection unit 170: long key count value inspection unit

180: long key event processing unit 190: key release event processing unit

200: key input event processing unit

The present invention relates to a key recognition system and method, and more particularly to a technique for recognizing long key input.

Currently, the key scan logic of a mobile communication terminal is a polling structure that is performed every predetermined time. In other words, the current key scan process is performed so that the key scan logic is periodically cycled by a timer (hereinafter referred to as a polling cycle), for example, to be activated at 35 ms intervals to recognize whether the key has been pressed by the user for all keys. It is a multi-processing scheme designed.

However, among the key recognition processes currently used in mobile communication terminals, a long key (Logn Key) recognition process is a single processing scheme designed to recognize only one long key input at a time by using one timer.

Therefore, since the synchronization between the user's key stroke and the long key stroke is not correct, a method such as assigning a timer to all keys is used to solve this problem. However, there is a problem that a shortage of timers and system overload which are limited resources are caused.

In addition, the general key recognition process of the mobile communication terminal is currently handled by the Handset task, but the long key recognition process stores the previous key input event in the UI task to check the time and generate the long key. Therefore, there is a problem in that the process for key recognition is distributed, and therefore, a consistent key recognition process is impossible.

Accordingly, the present inventors have implemented a technique to implement all the processes related to key recognition in a handset task, and to perform a technique for efficient long key recognition using minimal timer resources.

The present invention has been invented under the above-described object, and an object thereof is to provide a key recognition system and method capable of efficient long key recognition using a minimum timer resource.

According to an aspect of the present invention for achieving the above object, the long key recognition possible key recognition system according to the present invention is the previous key stroke state 'key pressed state', the current key stroke state ' The Long Key Count value is examined for keys that are in the "key pressed state", and the pooling is performed at a reference value at which the Long Key count value is recognized as a Long key. It is characterized by requesting the UI task to perform long key event processing on keys such as a period divided value.

Accordingly, the present invention provides a shortage of timers and systems that are limited resources by assigning timers to all keys in order to synchronize a user's key stroke with a long key stroke. Solving the conventional problem of overloading has the advantage that efficient long key recognition using minimum timer resources.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

The key recognition system according to the present invention exists in the form of software that can be executed in a handset task among executable codes executed on a portable electronic device having a key input means such as a mobile communication terminal or a PDA. Long key count value is checked for keys whose key stroke state is 'key pressed state' and the current key stroke state is 'key pressed state'. Key Minimum timer by requesting UI task to perform long key event processing on keys equal to the value obtained by dividing the pooling period from the reference value where the count value is recognized as a long key. Efficient long key recognition is possible with resources.

1 is a block diagram according to an embodiment of a key recognition system according to the present invention.

Specifically, the key recognition system 100 according to the present invention includes a first keystroke information 110, a second keystroke information 120, a long key count information 130, a key scan signal processor 140, And a previous keystroke state checker 150, a current keystroke state checker 160, a longkey count value checker 170, and a longkey event processor 180.

The first keystroke information 110 stores the current keystroke state for each key.

The second keystroke information 120 stores the previous keystroke state for each key.

The long key count information 130 stores a long key count value for each key.

The key scan signal processor 140 receives a scan value of each key scanned from a key scan logic at a pulling cycle interval, and stores the scan value of each of the received keys. 1 Keystroke information 110 is reflected and recorded.

Key scan logic installed in portable electronic devices having keys arranged in an M × N matrix form of a mobile communication terminal, PDA, etc. is a preset pulling cycle, usually at 35 ms intervals. It is activated by a timer and recognizes whether a key is pressed by a user for all keys, and outputs a scan value of each key. For example, the scan value may be defined to mean that the key is 'key pressed' in case of 0 (True), and the key is 'non pressed' in case of 1 (False). .

Then, the key recognition system 100 according to the present invention receives the scan value of each key output from the key scan logic through the key scan signal processing unit 140 to receive the first key stroke information 110. ) To record. For example, the first keystroke information 110 may be defined in the form of a first array [X _M , Y _N ] that stores a current keystroke state of keys arranged in an M × N matrix. The first keystroke information 110 records a value indicating whether each key is currently in a 'key pressed state' or a 'non pressed state'.

The previous keystroke state checker 150 checks the previous keystroke state of each of the keys with reference to the second keystroke information 120.

For example, the second keystroke information 120 that stores the previous keystroke state for the keys arranged in the M × N matrix form may be defined in the form of a second array [X _M , Y _N ]. The key recognition system 100 according to the present invention may refer to the second keystroke information 120 defined in the form of a second array [X _M , Y _N ] through the previous keystroke state checker 150. Check the previous keystroke state of the keys. That is, the second keystroke information 120 records a value indicating whether a previous keystroke state of each key is a 'key pressed state' or a 'non-pressed state'. By examining this recorded value, the previous keystroke status of each of the keys can be known.

The current keystroke state checker 160 checks the first keystroke information with respect to keys whose previous keystroke state is 'key pressed' as a result of the test by the previous keystroke state checker 150. Check 110 for current keystroke status.

Long Key is a key that has been pressed while the previous key stroke state has been 'key pressed' and has been pressed for a certain time, that is, until a reference time that is recognized as a long key has been reached. Since the key recognition system 100 according to the present invention is a preliminary procedure for recognizing a long key, as a result of the inspection by the previous keystroke state checker 150, the previous keystroke state is For the keys that are in the 'key pressed state', the current keystroke state is checked through the current keystroke state checking unit 160 with reference to the first keystroke information 110.

The long key count value checking unit 170 refers to the long key count information 130 for keys whose current key stroke state is a 'key pressed state' as a result of the test by the current key stroke state checking unit 160. Long Key Count is checked.

The key recognition system 100 according to the present invention defines and manages a long key count value, and pools at a reference value in which the long key count value is recognized as a long key. (Polling) If it is equal to the divided value, it is recognized as a long key. Accordingly, the key recognition system 100 according to the present invention can determine the keys for which the current keystroke state is 'key pressed' as a result of the inspection by the current keystroke state inspection unit 160. The long key count value is examined with reference to the long key count information 130 through 170.

The long key event processing unit 180 is a value obtained by dividing a pulling period from a reference value in which a long key count value inspected by the long key count value inspector 170 is recognized as a long key. Long key event processing is requested to the UI task for the same keys, and a long key count value is increased by one and reflected in the long key count information 130.

That is, the key recognition system 100 according to the present invention pulls a long key count value and a reference value recognized as a long key by the long key count value checker 170. The value obtained by comparing the period is compared, and it is determined whether or not a long key is input according to the value. At this time, the key recognition system 100 according to the present invention uses the long key event processor 180 to perform a long key ( Long Key Request long key event processing to the UI task for the same keys as the value obtained by dividing the pooling period from the reference value where the count value is recognized as a long key. Long Key) A count value is increased by one and reflected in the long key count information 130.

By doing so, the present invention enables efficient long key recognition using minimal timer resources.

On the other hand, according to an additional aspect of the present invention, the long key count value counted by the long key count value checker 170 is recognized by the long key event processor 180 as a long key. For keys smaller than the pooling period divided by the reference value, it is preferable to increase the long key count value by one to reflect the long key count information.

That is, in this case, the previous keystroke state is kept in the 'key pressed state' and the keystroke state is kept in the 'key pressed state' for a predetermined time, but the criterion recognized as a long key. In an embodiment in which a process of increasing a long key count value for long key recognition when the time has not been reached, the key recognition system 100 according to the present invention performs the long key count value check unit 170. Keys with small long key counts are compared by comparing the value of the long key count with the value obtained by dividing the pooling period from the reference value recognized as a long key. For example, the long key event processor 180 increases one long key count value of the corresponding keys to reflect the long key count information to continue.

Meanwhile, according to an additional aspect of the present invention, it is preferable that the key recognition system 100 according to the present invention further includes a key release event processor 190.

The key release event processor 190 checks the key release event for the keys whose current keystroke state is 'None pressed' as a result of the inspection by the current keystroke state checker 160. Request processing to the UI task, change the state value in the second keystroke information 120 corresponding to the corresponding keys to a 'None pressed state' value, and correspond to the corresponding keys The long key count value in the long key count information 130 is initialized.

That is, if the current keystroke state becomes the 'None pressed state' from the previous keystroke state in the 'key pressed state', the key is released, and thus, the key according to the present invention. As a result of the inspection by the current keystroke state inspecting unit 160, the recognition system 100 performs the key release event processing unit 190 for the keys whose current keystroke state is 'None pressed'. Request processing of a key release event to a UI task, and change a state value in the second keystroke information 120 corresponding to the corresponding keys to a 'None pressed state' value. . In addition, when a key is released, it is not necessary to perform a time count for recognizing a long key, and thus, the key recognition system 100 according to the present invention uses the key release event processing unit 190 to perform the long key count information corresponding to the corresponding keys. The key release process is performed by initializing the Long Key Count value in 130.

Meanwhile, according to an additional aspect of the present invention, it is preferable that the key recognition system 100 according to the present invention further includes a key input event processing unit 200.

The key input event processing unit 200 checks the first keystroke information on keys whose previous keystroke state is 'None pressed' as a result of the test by the previous keystroke state checking unit 150. Referring to (110), examines the keys whose current keystroke state is 'key pressed state', and requests the UI task to process key input events for the checked keys. The state value in the second keystroke information 120 corresponding to the keys is changed to a 'key pressed state' value.

That is, if the current keystroke state becomes the 'key pressed state' from the previous keystroke state 'None pressed state', since the key is input, the key recognition system according to the present invention. As a result of the inspection by the previous keystroke state inspecting unit 150, the key input event processing unit 200 performs the control on the keys for which the previous keystroke state is in the 'None pressed state'. By referring to the first keystroke information 110, the keys whose current keystroke state is 'key pressed state' are examined, and key input event processing for the checked keys is performed as a UI task. Request a key input process by changing a state value in the second keystroke information 120 corresponding to the corresponding keys to a 'key pressed state' value.

Therefore, the present invention enables all key processing related to key recognition processing to be performed by the Handset Task, which enables consistent key recognition processing, and enables the user's Key Stroke and Long Key. By assigning timers to all keys in order to synchronize strokes, it solves the conventional problem of insufficient resources such as lack of timer and system overload. You can do it.

Long key recognition operation of the key recognition system 100 according to the present invention having the above-described configuration will be described with reference to FIGS. 2A and 2B.

2A and 2B are flowcharts of a key recognition method according to the present invention.

As shown in the figure, in the first step S110, the key recognition system 100 through the key scan signal processing unit 140, the stroke state (Stroke State) of the keys (Key) arranged in the form of M × N matrix Scan at intervals of pooling cycles to store the scan values of each key in a first array [X _M , Y _N ] representing the current keystroke state.

Next, in a second step (S120), the key recognition system 100 refers to the second array [X _M , Y _N ] storing the previous keystroke state through the previous keystroke state checker 150. Examine the state of the previous keystroke of each of the keys arranged in an xN matrix.

If, as a result of the inspection by the second step (S120), the key recognition system 100 inputs the key in the third step (S130) for the keys whose previous keystroke state is 'None pressed' state. The key input event for the keys whose current keystroke state is 'key pressed' is examined by checking the corresponding key scan value stored in the first array [X _M , Y _N ] through the event processor 200. Event) requests processing to the UI task and 'key pressed' the second array [X _M , Y _N ] values corresponding to the keys whose current keystroke state is the 'key pressed state'. Status' value.

If the result of the check by the second step (S120), the key recognition system 100 in the fourth step (S140) for the keys whose previous keystroke state is the "key pressed state" in the current keystroke The state checker 160 examines the corresponding key scan value stored in the first array [X _M , Y _N ].

If, as a result of the inspection by the fourth step S140, the keys having the current keystroke state of 'None pressed' state, the key recognition system 100 performs the key release event in the fifth step S150. A second array [X _M] requesting the UI task to the UI task through the processing unit 190 and corresponding to the keys whose current keystroke state is 'None pressed'. , Y _N ] values are changed to the 'None pressed state' value, and the corresponding long key stored in the third array [X _M , Y _N ] storing the Long Key Count value. Key) Initialize the count value.

If, as a result of the check by the fourth step S140, the key recognition system 100 checks the long key count value checker in the sixth step S160 for the keys whose current keystroke state is the “key pressed state”. In operation 170, the corresponding long key count value stored in the third array [X _M , Y _N ] storing the long key count value is examined.

If the long key count value checked by the sixth step S160 is less than the value obtained by dividing the pulling period from the reference value recognized as the long key, the seventh step is performed. In operation S170, the key recognition system 100 increases the long key count value by one through the long key event processor 180.

If the long key count value checked by the sixth step S160 is equal to a value obtained by dividing a pulling period from a reference value recognized as a long key, the eighth key is equal to eighth. In operation S180, the key recognition system 100 requests a UI task to process a long key event through the long key event processor 180, and increases a long key count by one. .

Accordingly, the present invention enables a consistent key recognition process by processing all the processes related to the key recognition process in the Handset Task, and enables efficient long key recognition using minimum timer resources. The object of the present invention presented can be achieved.

As described above, the key recognition system and method according to the present invention allow all the processing related to the key recognition processing to be performed by the Handset Task, thereby enabling consistent key recognition processing, and the previous key stroke state. The Long Key Count value is checked by checking the Long Key Count value for the keys that are in the "key pressed state" and the current keystroke state is the "key pressed state." Efficient long key using minimum timer resources by requesting UI task to perform long key event processing for keys equal to the value obtained by dividing the pooling period from the reference value where the value is recognized as a long key. It is possible to recognize and have a useful effect of giving a long key recognition function to all keys of an electronic device having a key input means.

While the invention has been described with reference to the preferred embodiments, which are referred to by the accompanying drawings, it is apparent that various modifications are possible without departing from the scope of the invention within the scope covered by the following claims from this description. .

Claims (7)

The Long Key Count value is checked for keys whose previous keystroke state is the "key pressed state" and the current keystroke state is the "key pressed state". Long Key A handset that requests a UI task to perform long key event processing on keys equal to a value obtained by dividing a pooling period from a reference value where a count value is recognized as a long key. Handset) A key recognition system that can be performed in a task. The method of claim 1, The key recognition system is: First keystroke information that stores a current keystroke state for each key; Second keystroke information that stores a previous keystroke state for each key; Long key count information for storing long key count values for each key; Receiving a scan value of each key scanned from a key scan logic at a pulling cycle interval and reflecting the scan value of each of the received keys to the first key stroke information A key scan signal processor; A previous keystroke state checker for checking a previous keystroke state of each of the keys with reference to the second keystroke information; A current key that checks the current keystroke state with reference to the first keystroke information for the keys whose previous keystroke state is the 'key pressed state' as a result of the inspection by the previous keystroke state checking unit A stroke state inspection unit; A long key for checking a long key count value with reference to the long key count information for keys whose current key stroke state is 'key pressed' as a result of the inspection by the current key stroke state inspecting unit A count value checker; Long key event processing is performed on keys equal to a value obtained by dividing a pooling period from a reference value in which a long key count value checked by the long key count value inspection unit is recognized as a long key. A long key event processor for requesting a UI task and increasing one long key count value to reflect the long key count information; Key recognition system comprising a. The method of claim 2, The long key event processing unit: The long key count (Long Key count) for keys that are smaller than a value obtained by dividing a pulling period from a reference value recognized by the long key count value inspecting unit as a long key is recognized as a long key. A key recognition system, characterized by increasing the value of Count) to reflect the long key count information. The method of claim 3, wherein The key recognition system is: As a result of the inspection by the current keystroke state checker, for the keys whose current keystroke state is 'None pressed', a key release event is requested to the UI task, and the corresponding keys Change the state value in the second keystroke information corresponding to the 'None pressed state' value, and initialize the Long Key Count value in the long key count information corresponding to the corresponding keys. A key release event processor; Key recognition system further comprises. The method of claim 4, wherein The key recognition system is: As a result of the inspection by the previous keystroke state inspection unit, the current keystroke state is 'pressed' with reference to the first keystroke information with respect to the keys whose previous keystroke state is 'None pressed'. Key pressed), request a UI task to process key input events for the checked keys, and press a state value in the second keystroke information corresponding to the corresponding keys. A key input event processor configured to change a value of the “key pressed state”; Key recognition system further comprises. A mobile communication terminal equipped with the key recognition system according to any one of claims 1 to 6. Scanning the stroke states of keys arranged in an M × N matrix form at intervals of pooling periods to scan the scan values of each key in a first array representing the current key stroke state [X]. _M , Y _N ]; Checking a previous keystroke state of each of the keys arranged in an M × N matrix form by referring to a second array [X _M , Y _N ] storing the previous keystroke state; As a result of the inspection by the second step, for the keys whose previous keystroke state is 'None pressed state', the corresponding key scan value stored in the first array [X _M , Y _N ] is inspected. Requests the UI task to process key input events for keys whose current keystroke state is 'key pressed state', and the current keystroke state is 'key pressed state'. Changing a second array [X _M , Y _N ] values corresponding to the keys to a 'key pressed state'value; A fourth step of inspecting a corresponding key scan value stored in the first array [X _M , Y _N ] for the keys whose previous keystroke state is the 'key pressed state' as a result of the checking according to the second step Wow; As a result of the inspection by the fourth step, for the keys whose current keystroke state is 'None pressed', request processing of a key release event to the UI task, and the current keystroke state. Changes the second array [X _M , Y _N ] values corresponding to the keys that are in the 'None pressed state' to the 'None pressed state' value, and the Long Key count ( A fifth step of initializing a corresponding Long Key Count value stored in a third array [X _M , Y _N ] storing the Count value; In the third array [X _M , Y _N ] storing long key count values for keys whose current keystroke state is 'key pressed' as a result of the inspection according to the fourth step. A sixth step of inspecting the stored long key count value; The Long Key count is counted for keys that are smaller than the value obtained by dividing the pooling period from the reference value recognized by the sixth step as the long key. A seventh step of increasing the value by one; Long key event processing is performed for the same keys as the value obtained by dividing the pooling period from the reference value for which the long key count value checked in the sixth step is recognized as a long key. An eighth step of requesting a task and incrementing a long key count value by one; Key recognition method comprising a.

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