KR20150057520A - method and apparatus for transmitting information by Interrupt way - Google Patents
method and apparatus for transmitting information by Interrupt way Download PDFInfo
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- KR20150057520A KR20150057520A KR1020130140973A KR20130140973A KR20150057520A KR 20150057520 A KR20150057520 A KR 20150057520A KR 1020130140973 A KR1020130140973 A KR 1020130140973A KR 20130140973 A KR20130140973 A KR 20130140973A KR 20150057520 A KR20150057520 A KR 20150057520A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
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- Theoretical Computer Science (AREA)
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Abstract
The present invention relates to a method and an apparatus for transmitting touch information by an interruption method. One embodiment of the present invention includes a step of performing touch sensing, a step of performing a touch algorithm, and a step of transmitting touch data, A method of transmitting touch information by an interrupt method in which the step of transmitting the touch data is started by an interrupt signal generated during the execution of the touch algorithm may be provided. A method and apparatus for transmitting touch information in an interruption method according to an embodiment of the present invention can transmit effective data without delay time, generate an interrupt signal before the touch algorithm is terminated, The data processing time can be reduced.
Description
The present invention relates to a method and apparatus for transmitting touch information in an interruption manner.
I2C (I-square-C) is a bi-directional serial bus standard that operates by connecting peripheral devices to only two signal lines, unlike a parallel bus called a local bus. I2C has become the de facto standard solution for handling embedded devices.
However, there is a problem that a delay time occurs when touch information is transmitted by the I2C method. Such a delay time has a disadvantage of increasing power consumption.
And to provide a method and an apparatus for transmitting touch information by an interrupt method capable of transmitting effective data without delay time.
Also, a method and an apparatus for transmitting touch information by an interrupt method capable of generating an interrupt signal before a touch algorithm is terminated are provided.
Another object of the present invention is to provide a method and an apparatus for transmitting touch information by an interrupt method capable of reducing data processing time by transmitting only the changed effective data.
Another object of the present invention is to provide a method and an apparatus for transmitting touch information by an interrupt method capable of reducing power consumption by transmitting only a changed effective date.
According to an aspect of the present invention, there is provided a method of transmitting touch information including performing touch sensing, performing a touch algorithm, and transmitting touch data, the method comprising: The method of transmitting touch information by an interrupt method in which the step of transmitting the touch data is started.
The step of transmitting the touch data may include a delay step before the effective data is transmitted after the interrupt signal is transmitted and an effective data transmission step in which the effective data is transmitted, And the delaying step may be terminated after termination.
Meanwhile, the step of performing the touch algorithm and the delaying step may be terminated at the same time, and the delaying step may be started before the step of performing the touch algorithm is ended, Can be started after the step to be performed has ended.
The interrupt signal is generated while the touch algorithm is being executed. The step of performing the touch algorithm and the delay step before the transmission of the effective data after the interrupt signal in the step of transmitting the touch data are concurrently ended And the interrupt signal is generated while the touch algorithm is being performed. The interrupt signal is generated at the time when the step of performing the touch algorithm is ended and at the start of the effective data transmission step in which the effective data of the step of transmitting the touch data is transmitted It may be a signal to make the viewpoint coincide.
In addition, the effective data includes information on multi-touch information, touch state information, X coordinate values, Y coordinate values, and touch sizes, and information on the X coordinate values, the Y coordinate values, And the touch state information may include information on the press, release, move, and stop of the touch, and the effective data may include information indicating whether the X coordinate value and the Y coordinate value are 15 or less, the X Coordinate value and the Y coordinate value may be combined to further include an XY value obtained by binarization.
The method of transmitting the touch information by the interruption method may be implemented by a recording medium on which a computer-readable program is recorded.
According to another aspect of the present invention, there is provided an apparatus for transmitting touch data to a master device, the slave device comprising: an interrupt generating unit generating an interrupt signal while the slave device performs a touch algorithm, It is possible to provide an apparatus for transmitting touch information by a method.
Here, the touch data includes effective data, the effective data can be transmitted after the slave device finishes performing the touch algorithm, the touch data includes effective data, and the slave device performs the touch algorithm May coincide with a time point at which transmission of the effective data starts.
A method and apparatus for transmitting touch information by an interrupt method can transmit effective data without delay time.
A method and apparatus for transmitting touch information in an interrupt manner may generate an interrupt signal before the touch algorithm is terminated.
The method and apparatus for transmitting touch information by the interrupt method can reduce data processing time by transmitting only the changed effective data.
The method and apparatus for transmitting touch information by the interrupt method can reduce power consumption by transmitting only the changed effective data.
1 is a conceptual diagram illustrating a method of transmitting touch information by a conventional interrupt method.
FIGS. 2A and 2B are graphs showing simulation of a method of transmitting touch information by a conventional interrupt method.
3 is a conceptual diagram illustrating a method for transmitting touch information in an interruption method according to an embodiment of the present invention.
FIG. 4 is a table showing one embodiment according to the present invention.
Fig. 5 is a flowchart showing each embodiment of Fig.
FIG. 6 is a conceptual diagram illustrating a reduction in the effective data transfer step according to an embodiment of the present invention.
FIG. 7 illustrates an apparatus for transmitting touch information in an interruption method according to an embodiment of the present invention.
While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. As used herein, terms used in the present invention are selected from general terms that are widely used in the present invention while taking into account the functions of the present invention, but these may vary depending on the intention or custom of a person skilled in the art or the emergence of new technologies. In addition, in certain cases, there may be a term arbitrarily selected by the applicant, in which case the meaning thereof will be described in the description of the corresponding invention. Therefore, it is intended that the terminology used herein should be interpreted based on the meaning of the term rather than on the name of the term, and on the entire contents of the specification.
The I2C bus has three data transfer modes depending on the speed, such as standard, high speed, and super high speed. Supports speeds of 100 Kbps in standard mode, 400 Kbps in high speed, and up to 3.4 Mbps in high speed mode. All three are backward compatible. The I2C bus has independent access to multiple devices by assigning 7-bit and 10-bit addresses to each device. The bus receives and receives data between the MCU, which is the master that is the subject of communication, with the SDA (Serial DAT) signal line and the SCL (Serial Clock Line) signal line, and the slave which is the peripheral device to be communicated. The address used to specify the slave device is represented by 7 bits or 10 bits. Most devices use addresses in the 7-bit format.
The address may be set by the device manufacturer depending on the device or by using the external pin of the device. If the device is a package type with a small number of pins, the upper bits of the address are fixed and the lower bits are generally specified. Therefore, to write a program that communicates with a device connected to the I2C bus, be sure to refer to the manual and know the device address.
Using the I2C bus, the MCU must control the SCL and SDA signal lines to write or read data to the device. SCL is a signal line for transmitting a synchronous clock for transmitting data, and SDA is a signal line for expressing bit information of data to be transmitted. SCL is a clock synchronous signal line for transferring data. This clock signal is supplied from the master. Thus, SCL is a unidirectional signal line that is transmitted from the master to the slave. However, SDA is a bi-directional signal line because it transfers data from the master to the slave or from the slave to the master.
Since I2C uses a serial transmission method, data transmission basically carries bit information. In order to write or read bit data on the I2C bus to the device, it is necessary that the master start transmission to the slave, the address table of the transmission destination, the transmission purpose representation (read / write enable) (R / W) A basic expression element such as a transmission data representation (Data), a response expression (Ack) that the slave has normally received data, and a transmission end expression (Stop) are required.
The basic data for transferring data on the I2C bus including this expression is specified in units of 8 bits. Start, end, and response expressions are specified in 1 bit. Start is the beginning of the signal that the master will use the I2C bus to signal the slave to start the transfer. This signal is implemented as a 1-bit signal and is interpreted as a START signal when SDA changes from HIGH to LOW when SCL remains HIGH. The START signal may come several times before STOP. Unlike the first START signal, the second START signal is called the REPEAT START signal. Usually, this signal is used to specify the address and read the data.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 is a conceptual diagram illustrating a method of transmitting touch information by a conventional interrupt method.
Referring to FIG. 1, a method of transmitting touch information by a conventional interrupt method may include a touch sensing step (T1), a touch algorithm step (T2), and a touch data transmission step (T3). In addition, the touch data transmission step T3 may include a delay step D and an effective data transmission step (V). After the touch algorithm step T2 ends, an interrupt signal is transmitted. Further, a certain delay step (D) occurs after the interrupt signal is transmitted, and the effective data transmission step (V) is performed after the constant delay step (D) is finished. Here, the delay step (D) may vary depending on the inherent characteristics of the master device and the slave device.
FIGS. 2A and 2B are graphs showing simulation of a method of transmitting touch information by a conventional interrupt method.
Referring to FIG. 2A, it can be seen that a constant delay step (D) is required after the interrupt signal is transmitted. Here, the delay step (D) is 122.5 占 퐏.
Referring to FIG. 2B, it can be seen that a certain delay step (D) is required after the interrupt signal is transmitted. Here, the delay step (D) is 35.5 mu s.
3 is a conceptual diagram illustrating a method for transmitting touch information in an interruption method according to an embodiment of the present invention.
Referring to FIG. 3, a method for transmitting touch information in an interruption method according to an embodiment of the present invention includes performing a touch sensing (T1), performing a touch algorithm (T2), and transmitting touch data (T3), the step of transmitting touch data by an interrupt signal generated while the touch algorithm is performed may be started.
The step of transmitting the touch data T3 may include a delay step (D) before the effective data is transmitted after the interrupt signal is transmitted, and an effective data transmission step (V) in which the effective data is transmitted. In particular, in one embodiment of the present invention, the delay step D may be terminated after the step T2 in which the touch algorithm is performed is terminated. Since the effective data transmission step (V) is performed after the delay step (D) is completed and the delay step (D) is performed while the touch algorithm is performed, the effective data transmission step T2 may be performed.
The step (T3) of transmitting the touch data may concurrently terminate the step (T2) and the delay step (D) in which the touch algorithm is performed. If the effective data transfer step is performed immediately after the step T2 in which the touch algorithm is performed, the delay step D can be omitted, thereby saving time for transmitting the touch information. T4 is a time that can be ensured by causing the delay step (D) to proceed during the time (T2) in which the touch algorithm is performed. Referring again to FIGS. 2A and 2B, T4 in FIG. 2A can be 122.5 μs, and T4 in FIG. 2B can be 35.5 μs. In another embodiment, the delay step D may be started before the step T2 in which the touch algorithm is performed is finished. Here, the starting point is controlled by the interrupt signal, and the interrupt signal can be transmitted before the end of the step T2 in which the touch algorithm is performed.
The interrupt signal according to the embodiment of the present invention is transmitted while the touch algorithm is being performed and the effective data is transmitted after the interrupt signal of the step (T2) in which the touch algorithm is performed and the step (V) May be a signal that causes the delay stage D to end simultaneously. It may also be a signal that the time point at which the step T2 in which the touch algorithm is performed ends and the time point at which the effective data transmission step V in which the effective data in the touch data transmission step T3 is transmitted coincides.
The method of transmitting the touch information in the interruption method according to the embodiment of the present invention may be started after the step of transmitting the effective data is completed after the step of performing the touch algorithm. This is to prevent loss of effective data.
FIG. 4 is a table showing one embodiment according to the present invention.
Referring to FIG. 4, in the method of transmitting touch information by the interrupt method according to an embodiment of the present invention, the effective data includes multi-touch information ID, touch status information, X coordinate value, Y coordinate value, And may include information about the size. In addition, the information about the X coordinate value, the Y coordinate value, and the touch size can be transmitted only when they are changed.
In FIG. 4, the multi-touch information (ID) may include a configuration of 0000 XXXX. Here, the size of the multi-touch information (ID) may be composed of one byte (byte), that is, 8 bits (8 bits). The lower 4 bits (4-bit) of the multi-touch information (ID) may include a number for distinguishing multi-touch types. In one embodiment, multi-touch information (ID) can be expressed from 0 (0X0) to 15 (0XF), so that 16 multi-touch information can be expressed.
More specifically, in FIG. 4, XXXX may include the meaning that 0 or 1 may be assigned to each bit position. Meaning that it contains a number from 0 to 16. Also, the upper 4 bits (4-bit) can be used to distinguish the kind of touch information. In order to distinguish the type of touch information based on the table of FIG. 4, 3-bit (3-bit) is sufficient.
The size of the XY coordinate value can be composed of one byte (byte), that is, 8 bits (8-bit). Here, the upper 4 bits (4-bit) means the X coordinate and the lower 4 bits (4-bit) means the Y coordinate. In FIG. 4, 15 means that the X coordinate value and the Y coordinate value are (0, 0). Here, 15 does not have a specific unit, but may have a different physical unit according to a user's request. In one embodiment according to the present invention, 15 may be the number of gratings and may be located 15 cm from the origin.
When the X coordinate value, the Y coordinate value, and the touch size are changed in the first embodiment, it is possible to transmit information including the multi-touch information (ID), the touch state information (Status), the X coordinate value, the Y coordinate value, have. Here, the multi-touch information (ID) may include the number of simultaneously recognized touches. The touch status information (Status) may include information on the press, release, move, and stop of the touch.
In the case where the X coordinate value and the Y coordinate value are changed in the second embodiment, information on the multi-touch information (ID), the touch state information (Status), the X coordinate value, and the Y coordinate value can be transmitted .
When the X coordinate value and the touch size are changed in the third embodiment, information including the multi-touch information (ID), the touch state information (Status), the X coordinate value, and the touch size can be transmitted.
In the fourth embodiment, when the Y coordinate value and the touch size are changed, information including the multi-touch information (ID), the touch state information (Status), the Y coordinate value, and the touch size can be transmitted.
When the X coordinate value, the Y coordinate value, and the touch size are changed in the fifth embodiment, information including multi-touch information (ID), touch state information (Status), XY coordinate values, and touch size can be transmitted. Here, the XY coordinate value can be applied to a case where the X coordinate value and the Y coordinate value are less than 15, respectively. In other words, the upper four bits can be used as the X coordinate value, and the lower four bits can be used as the Y coordinate value. For example, if the X coordinate is 10 and the Y coordinate is 13, you can use the XY coordinate format. Further, the condition that the multi-touch information (ID) is used from 0 to 15 is required. The maximum number of touches that can be processed at the same time is 16. If the multi-touch information (ID) value is used only up to 15, the upper three bits can be used to distinguish the touch information types. The electronic device 100 can analyze the three bits of the ID value to grasp the contents of the touch information.
In the sixth embodiment, when only the touch size is changed, information including multi-touch information (ID), touch status information (Status), and touch size can be transmitted.
Information about the multi-touch information (ID), the touch state information (Status), and the XY coordinate values when the X coordinate value and the Y coordinate value are changed in the seventh embodiment and the X coordinate value and the Y coordinate value are respectively less than 15 . ≪ / RTI >
In the eighth embodiment, when the X coordinate value, the Y coordinate value, and the touch size are not changed, only the multi-touch information (ID) and the touch state information (Status) can be transmitted.
The method of transmitting the touch information by the interruption method according to an embodiment of the present invention can reduce the data processing time by transmitting only the changed effective data and reduce the power consumption by transmitting only the changed effective data.
Figure 5 is a flow chart of each of the embodiments of Figure 4;
Referring to FIG. 5, in step S500, multiple touch information (ID), touch state information (Status), X coordinate value, Y coordinate value, and touch size information can be generated by a touch algorithm.
In step S501, it can be determined whether the previous X coordinate value and the current X coordinate value are the same, and whether the previous Y coordinate value and the current Y coordinate value are the same.
If the previous X coordinate value is the same as the current X coordinate value and the previous Y coordinate value is the same as the current Y coordinate value, the previous touch size information and the current touch size information are compared in step S502. Lt; / RTI >
In step S502, the previous touch size information and the current touch size information may be compared, and in other cases, the information of the sixth embodiment may be transmitted.
If the previous X coordinate value and the current X coordinate value are different in step S501 and the previous Y coordinate value is different from the current Y coordinate value, it is determined whether the X coordinate value and the Y coordinate value are smaller than 16 in step S503. If the X coordinate value and the Y coordinate value are smaller than 16, the previous touch size information is compared with the current touch size information in step S504, and information of the seventh embodiment can be transmitted if they are the same.
In step S504, the previous touch size information and the current touch size information may be compared, and in other cases, the information of the fifth embodiment may be transmitted.
If the X coordinate value and the Y coordinate value are equal to or larger than 16 in step S503, the information of the fourth embodiment can be transmitted if the previous X coordinate value and the current X coordinate value are equal in step S505.
If the previous X coordinate value and the current X coordinate value are different in step S505, it is determined in step S506 whether the previous Y coordinate value is the same as the current Y coordinate value. If the previous Y coordinate value is the same as the current Y coordinate value, Can be transmitted.
If it is determined in step S506 that the previous Y coordinate value is different from the current Y coordinate value, the previous touch size information and the current touch size information are compared in step S507, and the information of the second embodiment may be transmitted in the same case.
In step S507, the previous touch size information is compared with the current touch size information, and in other cases, the information of the first embodiment can be transmitted.
FIG. 6 is a conceptual diagram illustrating a reduction in the effective data transfer step according to an embodiment of the present invention.
Referring to FIG. 6, the delay step (D) is performed during the touch algorithm step (T2), and when transmitting only the changed data among the effective data, the touch information transmission time can be saved by T5. It can be seen that T4 in Fig. 3 is smaller than T5 in Fig. Accordingly, the method and apparatus for transmitting touch information by the interrupt method according to an embodiment of the present invention can reduce the data processing time by transmitting only the changed effective data, and confirm that the power consumption can be reduced by transmitting only the changed effective data .
The method according to various embodiments of the present invention may be implemented in the form of program instructions that may be executed on various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, and the like, alone or in combination.
Program instructions to be recorded on a computer-readable medium may be those specially designed and constructed for the present invention or may be available to those skilled in the computer software arts. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Includes hardware devices specifically configured to store and execute program instructions such as magneto-optical media and ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like.
The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.
FIG. 7 illustrates an apparatus for transmitting touch information in an interruption method according to an embodiment of the present invention.
Referring to FIG. 7, an apparatus for transmitting touch information according to an interruption method according to an embodiment of the present invention may include a device for transmitting
The embodiments of the present invention have been described above. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.
T1: Touch sensing step
T2: touch algorithm step
T3: touch data transfer step
D: Delay step
V; Effective data transfer phase
T4: Saving time
T5: Saving time
Claims (14)
Wherein the step of transmitting the touch data is started by an interrupt signal generated while the touch algorithm is being performed.
The step of transmitting the touch data
A delay step before the effective data is transmitted after the interrupt signal is transmitted; And
An effective data transfer step of transferring the effective data;
, ≪ / RTI &
Wherein the delaying step is terminated after the step of performing the touch algorithm is terminated.
The step of transmitting the touch data
A delay step before the effective data is transmitted after the interrupt signal is transmitted; And
An effective data transfer step of transferring the effective data;
, ≪ / RTI &
Wherein the step of performing the touch algorithm and the step of deleting are concurrently terminated.
The step of transmitting the touch data
A delay step before the effective data is transmitted after the interrupt signal is transmitted; And
An effective data transfer step of transferring the effective data;
, ≪ / RTI &
Wherein the delaying step starts before the step of performing the touch algorithm is completed.
The step of transmitting the touch data
A delay step before the effective data is transmitted after the interrupt signal is transmitted; And
An effective data transfer step of transferring the effective data;
, ≪ / RTI &
Wherein the step of transmitting the effective data starts after the step of performing the touch algorithm is terminated.
The interrupt signal
Wherein the touch algorithm is performed while performing the touch algorithm,
Wherein the touch information is transmitted in a step of performing the touch algorithm and a step of simultaneously terminating the delay step before the effective data is transmitted after the interrupt signal is transmitted in the step of transmitting the touch data. Way.
The interrupt signal
Wherein the touch algorithm is performed while performing the touch algorithm,
Wherein the touch information is a signal that causes the end of the step of performing the touch algorithm to coincide with the start of the effective data transmission step in which the effective data of the step of transmitting the touch data is transmitted. How to.
The above-
Touch information, touch state information, X coordinate value, Y coordinate value, and touch size,
Wherein the information about the X coordinate value, the Y coordinate value, and the touch size is transmitted only when the information is changed.
The touch state information
And information on press, release, move, and stop of the touch.
The above-
When the X coordinate value and the Y coordinate value are 15 or less,
And an XY value obtained by binarizing a combination of the X coordinate value and the Y coordinate value.
Wherein the slave device generates an interrupt signal while performing the touch algorithm, and transmits the touch information by an interruption method of transmitting the touch data to the master device.
Wherein the touch data includes effective data,
And the effective data is transmitted after the slave device completes the touch algorithm execution.
Wherein the touch data includes effective data,
Wherein a time at which the slave device finishes performing the touch algorithm coincides with a start time of transmission of the effective data.
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| KR1020130140973A KR20150057520A (en) | 2013-11-19 | 2013-11-19 | method and apparatus for transmitting information by Interrupt way |
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| KR1020130140973A KR20150057520A (en) | 2013-11-19 | 2013-11-19 | method and apparatus for transmitting information by Interrupt way |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170051689A (en) * | 2015-10-30 | 2017-05-12 | 현대엠엔소프트 주식회사 | Apparatus for driving touch of monitor on vehicle and method thereof |
| KR20180062582A (en) * | 2016-11-30 | 2018-06-11 | 엘지디스플레이 주식회사 | Touch sensing circuit, touch display device, and touch sensing method |
-
2013
- 2013-11-19 KR KR1020130140973A patent/KR20150057520A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170051689A (en) * | 2015-10-30 | 2017-05-12 | 현대엠엔소프트 주식회사 | Apparatus for driving touch of monitor on vehicle and method thereof |
| KR20180062582A (en) * | 2016-11-30 | 2018-06-11 | 엘지디스플레이 주식회사 | Touch sensing circuit, touch display device, and touch sensing method |
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