Dual-mode optical input device

An input device comprising:

• an imaging sensor configured to generate tracking data including one or more images of an underlying surface to the input device;
• one or more processors coupled to the imaging sensor, the one or more processors configured to track a movement of the input device relative to the underlying surface based on the tracking data, wherein the movement is characterized by a frame rate;
• a power storage component coupled to a housing of the input device, wherein the imaging sensor and the one or more processors are powered via the power storage component;
• wherein the input device is configured to selectively operate in either of two modes of operation including:
• a first mode of operation wherein the tracked movement is performed at a first frame rate operating over a first range of frequencies;
• and
• a second mode of operation where the movement tracking is performed at a second frame rate operating over a second range of frequencies different than the first range of frequencies,
• wherein the second mode of operation is characterized in that less power is consumed by the input device from the power storage component as compared to the first mode of operation for the tracking of the movement of the input device, and
• wherein the input device further comprises an input element configured to be actuated by a user of the input device and wherein the input device is configured to selectively operate in the first mode or the second mode in response to actuation of the input element.

A method for operating an input device, the method comprising:

• controlling, by one or more processors, an image sensor to generate tracking data that includes one or more images of an underlying surface of the input device, wherein the tracking data operates at a frame rate;
• tracking a movement of the input device relative to the underlying surface based on the tracking data;
• receiving an input signal to place the input device in one of a first mode of operation or a second mode of operation;
• when the input device is placed in the first mode of operation:
• the movement tracking operates at a first frame rate operating over a first range of frequencies;
• and
• when the input device is placed in the second mode of operation:
• the movement tracking operates at a second frame rate operating over a second range of frequencies,
• wherein the second range of frequencies has a narrower bandwidth than the first range of frequencies,
• wherein when in the first mode of operation, the one or more processors cause the first frame rate to either dynamically increase or decrease over the first range of frequencies based on a speed that the input device is moving, and
• wherein when in the second mode of operation, the one or more processors cause the second frame rate to either dynamically increase or decrease over the second range of frequencies based on the speed that the input device is moving.