TW510115B - Image sensor keystroke mechanism - Google Patents

Abstract

In the invented image sensor keystroke mechanism, a keystroke is used in an image sensor of the sensing device to trigger a preset specified function. The image sensor can generate a specified response with respect to the variation of light intensity. Thus, the invention uses a keystroke device incorporating the design of light source to generate a specific image sensor position corresponding to a light intensity variation such that a specific signal is generated to trigger the operation function, which is well designed in advance, for elaborating the specified function of the specific keystroke.

Description

510115 A7 B7 V. Description of the invention (/) Image sensor button mechanism 1 · Summary The image sensor button mechanism uses "image sensor" [image sensor] as the sensing element of the button and triggers the specific setting in advance Functional person. The image sensor can generate a specific response to the change in light intensity. Therefore, the present invention uses a key element and a light source design to generate a change in light intensity before and after the key is touched. Device "specific position, and then generate a specific signal to trigger the operation function designed in advance, to play the specific function of a specific key. 2. Applicable field The present invention takes the design of the key mechanism of the image scanning device as an example of explanation. In practical use, as long as any mechanism that requires key movement can use the present invention as the key mechanism. Especially when the function of "multiple keys" is required, such as the design of the "key pad", the present invention can best exert the simplified function of the "key mechanism". ------ ----! (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 3.Background Description The present invention uses the design of the key mechanism of the image scanning device as Explain the example. The design of the key mechanism of the traditional image scanning device is a mechanical touch design, which generates a subsequent "mechanical motion" as a "trigger" mechanism before and after the "button" is touched, thereby generating a specific The signal is used to trigger the pre-designed operation function, and to play the specific function of the specific key. In order to achieve this function, a dedicated circuit board must be designed to reflect multiple keys, and the wires connected to the motherboard must be designed. Corresponding circuits must also be designed on the motherboard to cope with corruption. The invention can save the design of the dedicated circuit board reflecting multiple keys, and the wires connected to the motherboard, which can reduce the cost of materials, components, and assembly, and reduce the volume and weight of the entire product. In the present invention, the keys, light source, and image sensor are the main constituent elements. Before and after the "button" is touched, a subsequent "light intensity change" is generated as a "trigger" mechanism, thereby generating a Specific signals, in order to trigger pre-designed operating functions, and to perform specific functions of specific keys. Available "image sensors" include at least "contact image sensor" [CIS] and "charge coupled device image sensor, charge coupled device image sensor, CCD image sensor". Paper size applies Chinese National Standard (CNS) A4 specification (X 297 public attack>

Page-T 510115 A7 B7 Consumption Cooperation of Employees of the Central Bureau of the Ministry of Economic Affairs Printed 5. Description of the invention (2 /) 4. Brief illustration of the diagram Figure 1A · The state of the key mechanism of the prior art is broken. Figure 1B. Button mechanism path state FIG. 2A The first embodiment of the present invention is open circuit state FIG. 2B The first embodiment of the present invention is open circuit state FIG. 3A The second embodiment of the present invention is open circuit state FIG. 3B The second embodiment of the present invention road state is illustrated 4A The system control flowchart of the present invention Figure 4B The key control flowchart of the present invention Figure 4C The application circuit design block diagram of the present invention Figure 5A The key design of the present invention and a CIS sensor Figure 5B The key design of the present invention and a CCD Sensor Figure 6A Key Design 2 of the present invention and CIS sensor Figure 6B Key Design 2 of the present invention and CCD sensor Figure 7A Key Design 3 of the present invention and CIS sensor Figure 7B Key Design 3 of the present invention And CCD sensor FIG. 8A four-open state of the key design of the present invention and CIS sensor FIG. 8B four-way state of the key design of the present invention and CIS sensor FIG. 9 is a schematic diagram of multiple key designs of the present invention 5. Detailed description Referring to FIG. 1, the prior art of the key mechanism usually uses a mechanical action as a circuit break, as shown in FIG. 1A. The state of the key B140 mechanism of the prior art is open circuit; and the circuit path, as shown in FIG. 1B. State switching. Referring to FIG. 2A, the first embodiment of the present invention is in a disconnected state, which is designed as a key-blocking type. The light source 22 generates light L, and the key 24A blocks the light source. Only the background light B240 reaches the image sensor 26. In the state of the first embodiment of the invention, after the button 24A is moved to the 24B position, the light L at least partially passes through and reaches the image sensor 26 in a manner of triggering the light B242. Due to the change in the light intensity between the background light B240 and the trigger light B242, the image sensor 26 can generate a mirrored signal and activate a specific function that has been set in advance. Therefore, the specific function of the button 24 can be exerted. Referring to FIG. 3A, the second embodiment of the present invention is in a disconnected state. This is a key reflection design. The light source 32 generates light L. When the key 34A is inactive, only the background light B340 reaches the image sensor 36. ------------ (Please read the notes on the back before filling this page) -Order-丨 Meal

National Standard (CNS) A4 (210X297 mm)

Pag household 9 510115 A7 B7 V. Description of the invention (: 3) Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs See Figure 3B for the state of the second embodiment of the present invention. After the button 34A is moved to the position 34B, the light L is at least partially Reflect and reach the image sensor 36 in the manner of trigger light B342. Due to the change in the light intensity between the background light B340 and the trigger light B342, the image sensor 36 can generate a mirrored signal and activate a specific function set in advance, so that it can perform the specific function of the button 34. Refer to Figure 4A for the system control flowchart of the present invention; Figure 4B for the key control flowchart of the present invention. Referring to FIG. 4C, a block diagram of an application circuit design of the present invention, an image sensor transmits an image signal to an analog-to-digital converter, and converts the image signal into a digital signal. The digital signal can be sent to a buffer memory through the control of a microprocessor. Or perform key functions, or send information to a computer platform. When multiple keys are designed, the microprocessor executes different functions set in advance according to the signals in different areas; when it detects that the signal is a scanning finger, it will notify the drive circuit and cooperate with the drive of the motor to change the image sense. The tester is driven to perform the scanning function. In this way, the design of the "image sensor key pad" with the "image sensor" as the sensing element can be completed. See Figure 5A. The key design of the present invention and the CIS sensor, arc When the key 54 is jumped between the first position 54A and the second position 54B, the light and soil generated by the light source 52 will change the intensity of the CIS image sensor 56A, so a counter-signal will be generated. The specific function, therefore, can perform the specific function of the button 54. Referring to FIG. 5B, a key design of the present invention and a CCD sensor, the arc-shaped key 54, when the first position 54A and the second position 54B bounce, the light L generated by the light source 52 will be generated for the CCD image sensor 56B. The intensity changes, thus generating an anti-reflective signal, and activating a specific function set in advance, so that a specific function of the button 54 can be exerted. Referring to FIG. 6A, the key design two-off state and the CCD sensor of the present invention, and FIG. 6B, the key design two-way state and the CCD sensor of the present invention; the sliding button 64 has two sections of different degrees of reflection of light. When the one position 64A and the second position 64B slide, the light L generated by the light source 62 will cause an intensity change to the CCD image sensor 66B, thereby generating a reflected signal and activating a specific function set in advance. A specific function of the button 64 can be exerted. Referring to FIG. 7A, the key design 3 of the present invention and the CIS sensor, the rotary key 74, when the rotation changes, the light L generated by the light source 72 will cause an intensity change to the CIS image sensor 76A, thereby generating an antipodal Signal, and activate a specific function set in advance, so that a specific function of the button 74 can be exerted. (Please read the notes on the back before filling this page) ^ Installation ·

、 1T This paper size applies to China National Standard (CNS) A4 specification (210 × 297 mm) 3 510115 ________ A7

V. Description of the invention (彳) Refer to FIG. 7B. The key design of the present invention 3 and the CCD sensor, the rotary key 74, when the rotation changes, the light L generated by the light source 72 will change the intensity of the CCD image sensor 76B. Therefore, a mapped signal is generated and a specific function set in advance is activated, so that a specific function of the button 74 can be exerted. Referring to FIG. 8A, the four-open state of the key design of the present invention and the CIS sensor 'and FIG. 8B, the four-way state of the key design of the present invention and the CIS sensor slide key 84, when the first position 84A and the second position 84B slide and change The light L generated by the light source 82 will cause an intensity change to the CIS image sensor 86, thus generating a reflected signal, and starting a specific function set in advance, so that a specific function of the button 84 can be exerted. Referring to FIG. 9, a schematic diagram of multiple key designs of the present invention. Five keys 941, 942, 943, 944, 945, etc. are designed on the scanner 90, and include all the functions of the traditional keys. This means that when the present invention is applied, at least one key can be designed and used. This is in conjunction with the segmented sensing of the imaging area of the image sensor. In theory, more than one button can be designed to perform different functions respectively. If more than two rows of image sensors are used in parallel, a rectangular keyboard design with the same appearance as the traditional one can be formed, and a group of light sources can be shared between the two rows of image sensors. (Please read the precautions on the back before filling out this page) r device-Although the present invention uses the scanner key system as an example, the above-mentioned preferred embodiments are only used to illustrate the spirit of the present invention, not To limit the scope of the right of the present invention to these specific embodiments, those skilled in the art will understand that appropriate and equal changes and adjustments will be made to apply the design of the present invention to the equivalent design in other key systems. It is the spirit of the present invention and does not depart from the scope of the present invention.

、 1T Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs e ag This paper size applies to the Chinese National Standard (CNS) Α4 specification (210X297 mm)

Claims (1)

δ7ΐ 19 — ·., patent application scope A8 B8 C8 D8 L — a type of image sensor button mechanism, including a light source to generate sampling light; ^ image sensing unit to sense the aforementioned light changes; button When the touch, the light generated by the aforementioned light source is changed in intensity at a specific position, so that the aforementioned light sensing unit generates a trigger signal of reflection, and triggers a specific function set in advance. 2. The key mechanism of an image sensor as described in item 1 of the scope of patent application, wherein the image sensing unit refers to a contact type image sensor. '3. An image sensor key mechanism according to item 1 of the scope of patent application, wherein the image sensing unit refers to a charge-coupled element image sensor. ‘4. The image sensor key mechanism according to item 1 of the scope of the patent application, wherein the key is an arc-shaped reed key. 5. An image sensor key mechanism according to item 1 in the scope of patent application, wherein the keys are sliding keys °, 6. An image sensor according to item 1 in the scope of patent application The button described in the "button mechanism" refers to a rotary button. 7 · — an image sensor; (Please read the precautions on the back before filling this page), tx. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs to prepare the light source; Prepare the image sensor element; Prepare the button so that the button generates a light source before and after the action. Light-degree change; the aforementioned image sensing element generates a reflection signal for the aforementioned light intensity change, and then triggers a preset function to achieve a specific function of the button. The paper size is in accordance with the Chinese National Standard (CNS) Α4 specification (21〇 > < 297)