Abstract: In one aspect, a movable barrier operator includes a housing and a motor. The movable barrier operator further includes a camera mount that is connected to the housing and that supports a camera. The camera mount is configured to facilitate movement of the camera between a storage position wherein at least a portion of the camera is inside the housing and an operative position wherein the at least a portion of the camera is outside of the housing.

Abstract: In one aspect, a movable barrier operator includes a housing and a motor. The movable barrier operator further includes a camera mount that is connected to the housing and that supports a camera. The camera mount is configured to facilitate movement of the camera between a storage position wherein at least a portion of the camera is inside the housing and an operative position wherein the at least a portion of the camera is outside of the housing.

Abstract: Techniques for system recovery using a failover processor are disclosed. A first processor, with a first instruction set, is configured to execute operations of a first type; and a second processor, with a second instruction set different from the first instruction set, is configured to execute operations of a second type. A determination is made that the second processor has failed to execute at least one operation of the second type within a particular period of time. Responsive to determining that the second processor has failed to execute at least one operation of the second type within the particular period of time, the first processor is configured to execute both the operations of the first type and the operations of the second type.

Abstract: In one aspect, a movable barrier operator includes a housing and a motor. The movable barrier operator further includes a camera mount that is connected to the housing and that supports a camera. The camera mount is configured to facilitate movement of the camera between a storage position wherein at least a portion of the camera is inside the housing and an operative position wherein the at least a portion of the camera is outside of the housing.

Abstract: Techniques for system recovery using a failover processor are disclosed. A first processor, with a first instruction set, is configured to execute operations of a first type; and a second processor, with a second instruction set different from the first instruction set, is configured to execute operations of a second type. A determination is made that the second processor has failed to execute at least one operation of the second type within a particular period of time. Responsive to determining that the second processor has failed to execute at least one operation of the second type within the particular period of time, the first processor is configured to execute both the operations of the first type and the operations of the second type.

Abstract: Techniques for system recovery using a failover processor are disclosed. A first processor, with a first instruction set, is configured to execute operations of a first type; and a second processor, with a second instruction set different from the first instruction set, is configured to execute operations of a second type. A determination is made that the second processor has failed to execute at least one operation of the second type within a particular period of time. Responsive to determining that the second processor has failed to execute at least one operation of the second type within the particular period of time, the first processor is configured to execute both the operations of the first type and the operations of the second type.

Abstract: In one aspect, a movable barrier operator includes a housing and a motor. The movable barrier operator further includes a camera mount that is connected to the housing and that supports a camera. The camera mount is configured to facilitate movement of the camera between a storage position wherein at least a portion of the camera is inside the housing and an operative position wherein the at least a portion of the camera is outside of the housing.

Abstract: Techniques for error handling by a servomechanism are disclosed. The servomechanism determines, based on a first set of values assigned to servomechanism variables, electrical signals for controlling a component during a particular time interval, and applies the electrical signals to move the component. Subsequently, the servomechanism measures values for attributes associated with the component. Based on the measured attribute values, the servomechanism computes a second set of values for the servomechanism variables. Responsive to determining that the measured attribute values are erroneous, the servomechanism refrains from modifying the electrical signals based on the second set of values for the servomechanism variables.

Abstract: In one aspect, a movable barrier operator includes a housing and a motor. The movable barrier operator further includes a camera mount that is connected to the housing and that supports a camera. The camera mount is configured to facilitate movement of the camera between a storage position wherein at least a portion of the camera is inside the housing and an operative position wherein the at least a portion of the camera is outside of the housing.

Abstract: Techniques for system recovery using a failover processor are disclosed. A first processor, with a first instruction set, is configured to execute operations of a first type; and a second processor, with a second instruction set different from the first instruction set, is configured to execute operations of a second type. A determination is made that the second processor has failed to execute at least one operation of the second type within a particular period of time. Responsive to determining that the second processor has failed to execute at least one operation of the second type within the particular period of time, the first processor is configured to execute both the operations of the first type and the operations of the second type.

Abstract: Techniques for system recovery using a failover processor are disclosed. A first processor, with a first instruction set, is configured to execute operations of a first type; and a second processor, with a second instruction set different from the first instruction set, is configured to execute operations of a second type. A determination is made that the second processor has failed to execute at least one operation of the second type within a particular period of time. Responsive to determining that the second processor has failed to execute at least one operation of the second type within the particular period of time, the first processor is configured to execute both the operations of the first type and the operations of the second type.

Abstract: Techniques for error handling by a servomechanism are disclosed. The servomechanism determines, based on a first set of values assigned to servomechanism variables, electrical signals for controlling a component during a particular time interval, and applies the electrical signals to move the component. Subsequently, the servomechanism measures values for attributes associated with the component. Based on the measured attribute values, the servomechanism computes a second set of values for the servomechanism variables. Responsive to determining that the measured attribute values are erroneous, the servomechanism refrains from modifying the electrical signals based on the second set of values for the servomechanism variables.