Thomson Licensing

Thomson Licensing S.a.

Philippe Mace

Angelo Mazzante

Jean-Marie Steyer

Xavier Guitton

Luc Roux

Philippe Benezeth

Gérard Corda

Jean-Michel Amouriaux

After a first start-up, a first appliance performs a self-learning step for generating usage parameters. These parameters are elaborated on subsequent start-ups. When these parameters are optimized, the first appliance transmits them to another appliance which requests them. This second appliance uses the parameters of the first as optimized parameters. In this way, the second appliance limits the duration of the self-learning step and the use of non-optimal parameters. According to a refinement, the optimal parameters are centralized on a server which transmits them to a plurality of second appliances using a transmission network. The present invention also relates to an appliance and a server implementing the method.

Method of downloading usage parameters into an apparatus, and apparatus for implementing the invention

A generation method of an analogue signal generated by a PWM signal whose cyclic ratio and period are parametrizable is discussed. It is thus possible choose the pair formed from the cyclic ratio and the period producing an analogue value that is the closest to the value corresponding to the programmed command value. But the differences between the analogue values can be very great and generate zones of imprecision of variable width. Outside of these zones, the generated analogue signal is very precise. Therefore, when the command value associated with a pair is imprecise, a digital shift is applied to the command value at the same time as the application of an analogue shift means. Both shifts have the same amplitude and of opposite directions such that the cancel each other out, producing a precise analogue value. A device for generating an analogue signal implementing the method is also discussed.

Method for generating an analog signal generated by PWM signal, and system generating such signal

The present invention relates to a generation method of a variation form of an analogue signal generated by a PWM signal whose cyclic ratio and period are programmable. A signal can thus be generated whose evolution is linear over time. A succession of generation steps of a PWM signal during which different period and cyclic ratio values are applied, as well as pairs have different periods with the same cyclic ratio, thus enabling the analogue signal to be varied with great precision. According to an improvement, each generation step of a new PWM signal with different period and cyclic ratio values is applied over time slots of equal time. The present invention also relates to a generation system of a variable analogue signal implementing the method.

Generation method of a variable analogue signal generated by a PWM signal and system generating such a signal

The present invention discloses a method of servo controlling an electric motor during its start-up, comprising at least one step of measuring the speed after a determined duration counting from the commencement of start-up. During a first start-up, the servo control system determines the deviation between the value of the measured speed and a preset value. During a second start-up, the servo control system modifies at least one duration parameter of the commands applied to the motor as a function of the deviation determined during the first start-up, so as to reduce this deviation in the course of this second step. Advantageously, the start-up comprises three phases making it possible to start the motor while avoiding making it too noisy. The invention also relates to an apparatus implementing the method.

Method of servo controlling the speed of an electric motor on start-up, and apparatus implementing the system

The invention relates to a process and a device for time-managing the utilization of data detected in a data flow and constituting a data set. The device comprises a circuit (MP) for calculating a minimum duration of utilization of the detected data, which is proportional to the amount (L) of data contained in the data set. The invention applies more particularly to the case in which the detected data are digital data representing subtitles detected in a flow of data conveyed according to the MPEGSystem transport standard. The utilization of the data then corresponds to the displaying of the subtitles.

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Rennes, France

Philippe Mace