Abstract: The invention provides an improved multi-part adapter for use with an input apparatus such as a game controller. The input apparatus is shaped to be held in both hands of a user and comprises an outer case having a front face, a top face and a rear face opposing the front face. A control is located on the top face in a position to be operated by a user's index finger. A thumb stick is located on the front face and positioned to be operated by a thumb of the use. The adapter comprises a first part configured to removably couple to a top of the thumb stick, and a second part configured to removably attach to the first part in a manner that applies force to the first part and secures the first part to the thumb stick.

Abstract: The invention provides an input apparatus, a games controller for a games console and an analogue control stick. The analogue control stick comprises a shaft pivotally mounted for movement about at least two orthogonal axes and a target surface disposed at a proximal end of the shaft. The analogue control stick comprises at least one light source and a sensor, for capturing images of the target surface illuminated by the light source at a polling interval. A processing unit compares a current image of the target surface with the immediately preceding image of the target surface captured by the sensor to determine magnitude and direction of any incremental movement of the target surface relative to the sensor between capturing the compared images. The processing unit accumulates data, in a memory cache, indicative of the incremental movements to calculate an absolute position of the target surface relative to a predefined or origin position.

Abstract: The invention provides an input apparatus, a games controller for a games console and an analogue control stick. The analogue control stick comprises a shaft pivotally mounted for movement about at least two orthogonal axes and a target surface disposed at a proximal end of the shaft. The analogue control stick comprises at least one light source and a sensor, for capturing images of the target surface illuminated by the light source at a polling interval. A processing unit compares a current image of the target surface with the immediately preceding image of the target surface captured by the sensor to determine magnitude and direction of any incremental movement of the target surface relative to the sensor between capturing the compared images. The processing unit accumulates data, in a memory cache, indicative of the incremental movements to calculate an absolute position of the target surface relative to a predefined or origin position.