Laser page turning pen and page turning detection method thereof

Abstract

A laser wireless presenter comprises a pen case, a main control module, and a scroll key module rotatably mounted on the pen case. The scroll key module comprises a roller, a grating, a connecting rod, two light emitters and two light receivers. The two light emitters and the two light receivers are electrically connected to the main control module. The grating is coaxially fixed in the roller. The connecting rod passes through the roller and is fixed to the pen case at both ends. The two light emitters and the two light receivers are fixed on the connecting rod and are respectively located on both sides of the grating. The positions of the two light emitters correspond to the positions of the two light receivers. The grating always ensures that the two light receivers asynchronously receive the signal of the light emitter during the rotation of the roller. When the grating rotates in different directions, the order in which the two light receivers receive the signal of the light emitter is different. The laser wireless presenter is more convenient to turn pages and has a better user experience. A page turning detection method for a laser wireless presenter is also provided.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless presenters, and in particular to a laser wireless presenter and a page turning detection method thereof. Background Art

[0002] Laser presenters, also known as electronic pointers, are usually used in public places such as teaching and conferences, and are used with large screens, projectors, computers, etc. In addition to the mapping function of traditional laser pointers, it can also remotely control computers or multimedia projection devices wirelessly by pressing the forward and backward page-turning buttons on the laser presenter to achieve free page turning and random presentation of slides, which is more convenient to use.

[0003] However, the existing laser wireless presenter still has the following technical problems: two buttons are required to turn pages forward and backward, and especially when continuous page turning is required, the buttons need to be pressed multiple times. After long-term use, users are prone to fatigue, and the touch of the buttons will deteriorate as the usage time increases, resulting in poor user experience. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a laser wireless presenter with more convenient page turning and better user experience.

[0005] The technical solution of the present invention is: a laser wireless presenter, which includes a pen shell and a main control module arranged in the pen shell, characterized in that it also includes a rolling key module rotatably mounted on the pen shell, the rolling key module includes a roller, a grating, a connecting rod, two light emitters and two light receivers, the two light emitters and the two light receivers are electrically connected to the main control module, the grating is coaxially fixed in the roller, the connecting rod passes through the roller and is fixed to the pen shell at both ends, the two light emitters and the two light receivers are fixed on the connecting rod and are respectively located on both sides of the grating, the positions of the two light emitters correspond to the positions of the two light receivers, the grating is always ensured to asynchronously receive the signal of the light emitter during the rotation of the roller, and the front and back order of the two light receivers receiving the light emitter signal is different when the grating rotates in different directions.

[0006] The working principle of the laser page turning pen of the present invention is as follows:

[0007] The laser wireless presenter of the present invention drives the grating to rotate by rolling the roller. During the rotation of the grating, when one of the light receivers receives the light transmitter signal, the other light receiver will not receive the light transmitter signal. Moreover, when the roller rolling directions are different, that is, the grating rotation directions are different, the front and back orders of the light transmitter signals received by the two light receivers are different. In this way, the main control module can distinguish whether the page is turned forward or backward according to the different front and back orders of the light transmitter signals received by the two light receivers.

[0008] After adopting the above structure, the present invention has the following advantages:

[0009] The laser wireless presenter of the present invention uses a roller rolling method to turn pages forward and backward. Compared with the existing method of continuously pressing two buttons, turning pages is more convenient and quick. After long-term use, the user is not easily fatigued, and the touch of the roller will not deteriorate with the increase of usage time, and the user experience is better.

[0010] Preferably, the surface of the roller is provided with a plurality of grooves, which can prevent slipping during rolling and provide a better hand feel.

[0011] Preferably, both ends of the connecting rod are connected to the roller via a damper, respectively. This arrangement can provide a sense of frustration during rotation, providing a better user experience.

[0012] Preferably, a limiting device is provided on the connecting rod and on both sides of the roller, respectively, so as to limit the position of the roller so that it will not move axially.

[0013] Preferably, the two light emitters are fixed on the connecting rod via a first mounting bracket. This arrangement can facilitate the installation of the light emitters.

[0014] Preferably, the two optical receivers are fixed on the connecting rod via a second mounting bracket. This arrangement can facilitate the installation of the optical receivers.

[0015] Preferably, the light transmitter is an infrared transmitter, and the light receiver is an infrared receiver. The infrared transmitter and the infrared receiver are small in size, easy to install, inexpensive, and low in cost.

[0016] Another technical problem to be solved by the present invention is to provide a page turning detection method for a laser wireless presenter that is more convenient to turn pages and provides a better user experience.

[0017] Another technical solution of the present invention is: a page turning detection method of a laser wireless presenter, characterized in that it comprises the following steps:

[0018] (1) The main control module obtains the initial signals of the two optical receivers;

[0019] (2) The main control module detects in real time whether the signals of the two optical receivers change. If so, it is determined that there is a page turning action and proceeds to the next step. If not, it is determined that there is no page turning action and returns to step (2) to continue detection;

[0020] (3) The main control module determines whether to turn the page forward or backward based on the initial signals of the two optical receivers and the order in which the two optical receivers receive the signals of the optical transmitter.

[0021] After adopting the above method, the present invention has the following advantages:

[0022] The laser wireless presenter of the present invention adopts a roller rolling method, cleverly utilizes a light receiver, a light transmitter and a grating, and judges the previous page and the next page according to the front and back order of the signals from the two light receivers to the light transmitter. Compared with the existing method of continuously pressing two buttons, page turning is more convenient and quick. After long-term use, the user is not easily fatigued, and the touch of the roller will not deteriorate with the increase of use time, and the user experience is better.

[0023] Preferably, in step (3), the main control module further determines whether the signals received by the two optical receivers are periodically repeated. If so, it is determined to be continuous page turning, and the number of repetitions is the number of pages of continuous page turning. This setting can determine continuous page turning, which is more user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the laser page turning pen of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the scroll button module of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the rolling button module of the present invention after the roller is hidden;

[0027] In the figure: 1-pen housing, 2-rolling key module, 3-drum, 4-grating, 5-connecting rod, 6-light transmitter, 7-light receiver, 8-groove, 9-damper, 10-first mounting bracket, 11-second mounting bracket, 12-limiting device. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Embodiment 1:

[0030] like Figure 1-3As shown, a laser wireless presenter comprises a pen shell 1 and a main control module arranged in the pen shell 1. The core component of the main control module can be a single chip microcomputer or a DSP. The main control module can adopt the existing technology and is not shown in the figure. It also comprises a rolling key module 2 rotatably mounted on the pen shell 1. The rolling key module 2 comprises a roller 3, a grating 4, a connecting rod 5, two light emitters 6 and two light receivers 7. The two light emitters 6 and the two light receivers 7 are electrically connected to the main control module. The grating 4 is coaxially fixed in the roller 3. The connecting rod 5 passes through the roller 3 and is fixed to the pen shell 1 at both ends. The two light emitters 6 and the two light receivers 7 are fixed on the connecting rod 5 and are respectively located on both sides of the grating 4. The positions of the two light emitters 6 correspond to the positions of the two light receivers 7. The grating 4 always ensures that the two light receivers 7 asynchronously receive the signal of the light emitter 6 during the rotation of the roller 3. When the rotation direction of the grating 4 is different, the front and back order of the two light receivers 7 receiving the signal of the light emitter 6 is different.

[0031] The surface of the drum 3 is provided with a plurality of grooves 8; the two ends of the connecting rod 5 are connected to the drum 3 via a damper 9 respectively, and may also be connected by a mechanical elastic ring, or other devices that can provide a sense of frustration during rotation; a limit device 12 is provided on the connecting rod 5 and on both sides of the drum 3, and in this embodiment, the limit device 12 adopts a limit block; the two light emitters 6 are fixed to the connecting rod 5 by a first mounting bracket 10; the two light receivers 7 are fixed to the connecting rod 5 by a second mounting bracket 11; the light emitter 6 is an infrared transmitter, and the light receiver 7 is an infrared receiver. The light emitter 6 can also be a light emitting diode or an LED lamp, and the light receiver 7 can also be a light sensor.

[0032] Embodiment 2:

[0033] A page turning detection method for a laser wireless presenter, the method is based on the laser wireless presenter in embodiment 1, and comprises the following steps:

[0034] (1) The main control module obtains the initial signals of the two optical receivers 7;

[0035] (2) The main control module detects in real time whether the signals of the two optical receivers 7 change. If so, it is determined that there is a page turning action and proceeds to the next step. If not, it is determined that there is no page turning action and returns to step 2 to continue detection;

[0036] (3) The main control module determines whether to turn the page forward or backward based on the initial signals of the two optical receivers 7 and the order in which the two optical receivers 7 receive the signals of the optical transmitter 6 .

[0037] Preferably, in step (3), the main control module further determines whether the signals received by the two optical receivers 7 are periodically repeated. If so, it is determined to be continuous page turning, and the number of repetitions is the number of pages turned continuously.

[0038] Assume that the signal received by the optical receiver 7 is 1, and the signal not received is 0; for example, when turning the page forward, the signals received by the two optical receivers 7 are: 00, 10, 01, 00; when turning the page backward, the signals received by the two optical receivers 7 are: 00, 01, 10, 00; when turning the page forward continuously, the signals received by the two optical receivers 7 are: 00, 10, 01, 00, 10, 01, 00, 10, 01, 00. The signals received by the optical receiver 7 are periodically repeated, and the number of repetitions is 3. Therefore, it is judged that 3 pages are turned forward continuously; when turning the page backward continuously, the signals received by the two optical receivers 7 are: 00, 01, 10, 00, 01, 10, 00, 01, 10, 00, 01, 10, 00. The signals received by the optical receiver 7 are periodically repeated, and the number of repetitions is 5. Therefore, it is judged that 5 pages are turned backward continuously.

Claims

1. A laser presenter, comprising a pen housing (1) and a main control module arranged in the pen housing (1), characterized in that: The invention also comprises a rolling key module (2) rotatably mounted on the pen housing (1), the rolling key module (2) comprising a roller (3), a grating (4), a connecting rod (5), two light emitters (6) and two light receivers (7), the two light emitters (6) and the two light receivers (7) being electrically connected to the main control module, the grating (4) being coaxially fixed in the roller (3), the connecting rod (5) passing through the roller (3) and having two ends fixed to the pen housing (1), the two light emitters (6) and the two light receivers (7) being fixed on the connecting rod (5) and being respectively located on both sides of the grating (4), the positions of the two light emitters (6) corresponding to the positions of the two light receivers (7), the grating (4) always ensuring that the two light receivers (7) asynchronously receive signals from the light emitter (6) during the process of rotating with the roller (3), and the order in which the two light receivers (7) receive signals from the light emitter (6) is different when the grating (4) rotates in different directions.

2. The laser wireless presenter according to claim 1, characterized in that: The surface of the roller (3) is provided with a plurality of grooves (8).

3. The laser presenter according to claim 1, characterized in that: Both ends of the connecting rod (5) are connected to the roller (3) via a damper (9) respectively.

4. The laser presenter according to claim 1, characterized in that: A limiting device (12) is provided on the connecting rod (5) and on both sides of the roller (3).

5. The laser wireless presenter according to claim 1, characterized in that: The two light emitters (6) are fixed on the connecting rod (5) via a first mounting bracket (10).

6. The laser wireless presenter according to claim 1, characterized in that: The two optical receivers (7) are fixed on the connecting rod (5) via a second mounting bracket (11).

7. The laser wireless presenter according to claim 1, characterized in that: The light transmitter (6) is an infrared transmitter, and the light receiver (7) is an infrared receiver.

8. A page turning detection method for a laser wireless presenter, the method being based on any one of the laser wireless presenters described in claims 1-7, characterized in that: It includes the following steps: (1) The main control module obtains initial signals from two optical receivers (7); (2) The main control module detects in real time whether the signals of the two optical receivers (7) have changed. If so, it is determined that there is a page turning action and the next step is entered. If not, it is determined that there is no page turning action and the process returns to step (2) to continue detection. (3) The main control module determines whether to turn the page forward or backward based on the initial signals of the two optical receivers (7) and the order in which the two optical receivers (7) receive the signals of the optical transmitter (6).

9. The page turning detection method of a laser wireless presenter according to claim 8, characterized in that: In the step (3), the main control module also determines whether the signals received by the two optical receivers (7) are periodically repeated. If so, it is determined to be continuous page turning, and the number of repetitions is the number of pages turned continuously.

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