Abstract: A video camera, having a body which supports a Depth of Field adapter and contains an image recording device comprises imaging optics having a disk shaped ground glass for rendering visible a real image; a rotatable post having a first end coupled to the ground glass at its center and a second end coupled to the body of the Depth of Field adapter; and a motor coupled to rotate the rotatable post to urge the ground glass to rotate, and where the Depth of Field adapter comprises first and second tubes which, when aligned, form a front tube of the Depth of Field adapter; a coupling ring coupled to align and join the first tube with the second tube; and a support member coupled to the first and second tubes to position the first and second tubes to be at the front of the optical path of the camera.

Abstract: A distributed energy conversion system may include one or more DC power sources and two or more inverters to convert DC power from the power sources to AC power. The AC power from the two or more inverters may be combined to provide a single AC output. A module may include one or more photovoltaic cells and two or more inverters. An integrated circuit may include power electronics to convert DC input power to AC output power and processing circuitry to control the power electronics. The AC output power may be synchronized with an AC power distribution system.

Abstract: A voltage doubler rectifier RF power harvesting system is provided having at least one power harvesting module with a voltage doubler rectifier that includes a DC voltage input and output, signal input, first and second floating gate transistors that are connected in series between the DC voltage input and output, and a gate control of the floating gate is connected to a drain of the transistor. The voltage double rectifier includes a first capacitor disposed between the input signal and the drain of the first floating gate transistor, and a second capacitor disposed between a ground and the drain of the second floating gate transistor. The system includes an input antenna and a transmitter with a transmitter antenna, where a full-wave peak-to-peak voltage of an incoming RF signal is rectified. The system also includes a powered device connected to the DC voltage output to utilize the rectified signal.

Abstract: A method for preventing unauthorized use of a software program on a computing device includes updating a state of a software program on a computing device to an updated state. Transmitting an update signal from the software program to a hardware token coupled to the computing device and updating a state of the hardware token to an updated state in response to the received update signal. Performing a first cryptographic check using the updated state of the software program and the updated state of the hardware token with the hardware token. Transmitting the first cryptographic check from the hardware token to the software program and performing a second cryptographic check using the state of the hardware token and the state of the software program with the computing device.

Abstract: A system and method for the issuance of software licenses through a tiered structure, whereby a software license is issued from a software developer to an end user through one or more intermediate layers of distribution. The system and method for doing so enforces a predefined security policy. In an embodiment of the invention, the security policy is defined by the security developer. The security policy may, for example, address who may use the software package, how many users there may be, an expiration date for use of the software, and/or specific features that may or may not be used by a particular user. The software developer first issues a license template to the next intermediate layer of distribution. This may be a software distributor, who then specifies one or more restrictions on the use of the software. This is done be articulating these restrictions in the license template, effectively “filling in” some or all of the template.

Abstract: A method and/or system for providing grace licensing to disconnected network license users provides a server with a grace enabled license having a grace criteria, provides a client computer with an application operable with the grace enabled license, provides the grace enabled license from the server to the client computer when the client computer is communicatively connected to the server, and operates the application on the client computer according to the grace criteria when the client computer is disconnected from the server. The grace criteria can include a parameter(s) including a number of times the application is operable on a client computer when the client computer is disconnected from the server, a total number of hours the application is operable on a client computer when the client computer is disconnected, and/or a maximum number of days the application is operable on a client computer when the client computer is disconnected.