OPTICAL MOUSE SOC WITH 8-PINS
First Claim
1. An optical mouse SOC with 8-pins applied to an optical mouse which comprises a plurality of switches for receiving touch control, the optical mouse SOC comprising:
- a micro-controller subsystem;
an optical locating subsystem providing an optical location signal to the micro-controller subsystem;
a first power pin coupled to a first power voltage, for supplying the optical locating subsystem and the micro-controller subsystem;
a second power pin coupled to a second power voltage supplying the optical locating subsystem and the micro-controller subsystem;
a driving pin coupled to the optical locating subsystem for controlling a light source;
two signal pins coupled to the micro-controller subsystem for providing a differential signal, with an amplitude of the second power voltage, to a host; and
a first IO pin coupled to a predetermined number of the plurality of switches such that the micro-controller subsystem detects statuses of the predetermined number of the plurality of switches.
1 Assignment
0 Petitions
Accused Products
Abstract
SOC (System On Chip) for optical mouse with 8-pins is provided. The SOC of the invention has three power pins for coupling a first power voltage, a second power voltage and ground voltage, a driving pin for controlling a light source, an optical sensing array for receiving reflected light, two signal pins for data exchange with a host and two IO pins. For at least five different switches of the optical mouse that receive touch controls of users, each IO pin receives and distinguishes statuses of multiple switches, such that a total pin count of the IO pins is less than a total number of switches.
9 Citations
22 Claims
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1. An optical mouse SOC with 8-pins applied to an optical mouse which comprises a plurality of switches for receiving touch control, the optical mouse SOC comprising:
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a micro-controller subsystem; an optical locating subsystem providing an optical location signal to the micro-controller subsystem; a first power pin coupled to a first power voltage, for supplying the optical locating subsystem and the micro-controller subsystem; a second power pin coupled to a second power voltage supplying the optical locating subsystem and the micro-controller subsystem; a driving pin coupled to the optical locating subsystem for controlling a light source; two signal pins coupled to the micro-controller subsystem for providing a differential signal, with an amplitude of the second power voltage, to a host; and a first IO pin coupled to a predetermined number of the plurality of switches such that the micro-controller subsystem detects statuses of the predetermined number of the plurality of switches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An optical mouse SOC with 8-pins applied to an optical mouse which comprises a left button switch, a middle button switch, a right button switch, a first wheel switch and a second wheel switch for receiving touch control, the optical mouse SOC comprising:
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a micro-controller subsystem; an optical locating subsystem providing an optical location signal to the micro-controller subsystem; a first power pin coupled to a first power voltage supplying the optical locating subsystem and the micro-controller subsystem; a second power pin coupled to a second power voltage supplying the micro-controller subsystem; a driving pin coupled to the optical locating subsystem for controlling a light source; two signal pins coupled to the micro-controller subsystem for providing a differential signal, with an amplitude swinging between the first power voltage and the second power voltage, to a host; and a first IO pin with a first parallel circuit connected between the first IO pin and the first power voltage; and wherein the first parallel circuit comprises a first resistor serial to the left button switch, a second resistor serial to the middle button switch, and a third resistor serial to the right button switch;
the first resistor, the second resistor and the third resistor have different resistances. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An optical mouse SOC with 8-pins, applied to an optical mouse which comprises a left button switch, a middle button switch, a right button switch, a first wheel switch and a second wheel switch for receiving touch control, the optical mouse SOC comprising:
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a micro-controller subsystem; an optical locating subsystem providing an optical location signal to the micro-controller subsystem; a first power pin coupled to a first power voltage supplying the optical locating subsystem and the micro-controller subsystem; a second power pin coupled to a second power voltage supplying the micro-controller subsystem; a third power pin coupled to a ground voltage supplying the optical locating subsystem and the micro-controller subsystem; a driving pin coupled to the optical locating subsystem for controlling a light source; two signal pins coupled to the micro-controller subsystem for providing a differential signal, with an amplitude of the second power voltage, to a host; a first IO pin with a parallel circuit connected between the first IO pin and the first power voltage; and a second IO pin with a common resistor connected between the second IO pin and the first IO pin, and with a common capacitor connected between the second IO pin and the ground voltage; wherein the parallel circuit comprises a first resistor serial to the left button switch, a second resistor serial to the middle button switch, a third resistor serial to the right button switch, a fourth resistor serial to the first wheel switch and a fifth resistor serial to the second wheel switch;
the first resistor, the second resistor, the third resistor, the fourth and the fifth resistors have different resistances. - View Dependent Claims (21, 22)
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Specification