System for recording and reproducing pulse code modulated data Patent

System for recording and reproducing PCM data from data stored on magnetic tap

NTP v. RIM: The Diverging Law Between System and Method Claim Infringement

[Excerpt] “Almost thirty years after the landmark decision of Decca Ltd. v. United States, the Federal Circuit had an opportunity to reevaluate the extraterritorial limits of U.S. patent law in NTP, Inc. v. Research in Motion, Ltd. After withdrawing its initial opinion (“NTP I”) and issuing a second opinion (“NTP II”), the court held that a system having a component located outside U.S. jurisdiction could be subject to U.S. patent law. The court held as a matter of law, however, that a process in which a step is performed outside U.S. jurisdiction could not be subject to U.S. patent law. In NTP I and NTP II, the infringing system included a component located in Canada. Ironically, that infringing system was the platform on which the non-infringing process operated. The court’s justification for this result was based on the “collective” nature of systems compared to the “individual” nature of processes. This article analyzes the court’s decision and recommends an alternative holding in order to unify “system” and process infringement law. Additionally, this article examines the history of “system” claims to determine whether their current use as “machine” claims is consistent with their historical use. Given its historical context, this article then evaluates whether a preamble including a “system” should limit a claim’s scope under the current law. Finally, this article evaluates the effect of the court’s decision on communications and secondary-use patents.

PCM magnetic tape system efficiently records and reproduces data

Split-phase PCM technique consists of data and clock signal recording and reproduction systems. This PCM magnetic tape system achieves a high packing density on the tape and provides a symmetrical reproduction of the recorded signal

Wind tunnel real-time data acquisition system

The hardware configuration is described for the data acquisition system (DAS) which consists of an analog front end that can process up to 260 channels of data, a multichannel analog-to-digital subsystem that can process up to 50,000 samples of data per second, and a digital computer with standard and nonstandard devices, including graphics capability. Also described are the software configuration of the DAS and complex hardware/software interfaces providing, for example, automatic amplifier gain and offset adjustment for each data channel. Specific DAS applications are summarized, including the real time processing of dynamic deflection data, unsteady pressure measurements, and flutter and buffet data

Ego balloon experiment data processor

Ego balloon experiment data processo

Friction measuring apparatus Patent

Kinetic and static friction force measurement between magnetic tape and magnetic head surface