220 results about "Free run" patented technology

Embodiments of the invention enable the synchronization of clocks across packet switched networks, such as the Internet, sufficient to drive a jitter buffer and other quality-of-service related buffering. Packet time stamps referenced to a local clock create a phase offset signal. A shortest-delay offset generator uses a moving-window filter to select the samples of the phase offset signal having the shortest network propagation delay within the window. This shortest network propagation delay filter minimizes the effect of network jitter under the assumption that queuing delays account for most of the network jitter. The addition of this filtered phase offset signal to a free-running local clock creates a time reference that is synchronized to the remote clock at the source thus allowing for the transport of audio, video, and other time-sensitive real-time signals with minimal latency.

Embodiments of the invention include on-chip characterization of transistor degradation. In one embodiment, includes one or more functional blocks to perform one or more functions and an integrated on-chip characterization circuit to perform on-chip characterization of transistor degradation. The integrated on-chip characterization circuit includes a selectively enabled ring oscillator to generate a reference oscillating signal, a free-running ring oscillator to generate a free-running oscillating signal, and a comparison circuit coupled to the selectively enabled ring oscillator and the free-running ring oscillator. From the reference oscillating signal and the free-running oscillating signal, the comparison circuit determine a measure of transistor degradation.

The invention relates to a method for generating random numbers in which oscillating digital output signals (A₁, A₂, . . . , A_L) of unequal or equal periodicity are generated by at least two ring oscillators (32, 33, 34), an external parity signal (PS) representing a logical state (“0,”“1”) being generated when an odd number of the output signals (A₁, A₂, . . . , A_L) take on a specified logical state (“1”). According to the invention, the external parity signal (PS) is fed back to an external parity input (36, 37, 38) of each of the respective ring oscillators (32, 33, 34). The invention further relates to a random number generator having at least two ring oscillators (32, 33, 34), made up in particular of independently free-running inverter chains with feedback having an odd number (K) of series-connected inverters (inv_1,2, inv_2,1, inv_3,1, . . . , inv_i,j, . . . , inv_L,KL) that generate oscillating digital output signals (A₁, A₂, . . . , A_L) of unequal or equal periodicity, and having first parity signal generating means (XOR) that generate an external parity signal (PS) representing a logical state (“0,”“1”) when an odd number of the output signals (A₁, A₂, . . . , A_L) take on a specified logical state (“1”). According to the invention, there are feedback means (xor₁, xor₂, xor₃, xor₄, . . . , xor_L) that feed back the external parity signal (PS) to an external parity input (36, 37, 38) of each of the respective ring oscillators (32, 33, 34). In this invention the cooperation of chaotic dynamics (feedback of the parity signal) and true randomness (jitter due to thermal noise) in digital circuits, a novel theoretical principle for generating random numbers, has been made into an efficient practical solution.

Provided are a time synchronizing method and apparatus based on a time stamp. The time synchronizing method includes: transmitting a local time stamp based on a free-running local clock to a master node; receiving a response time stamp from the master node; calculating a delta time value based on the response time stamp; filtering the delta-time using a digital low pass filter running at the free-running local clock rate; and adjusting a local clock time based on the filtered delta time value.

An RF electronic identification system 10 is disclosed and claimed. The system includes a reader 12 and a plurality of transponders 14.1 to 14.n. When energized by an interrogation signal from the reader, each transponder automatically responds by repeatedly retransmitting a signal burst including identification code data associated with the relevant transponder. Each transponder includes circuitry 34 for generating random inter-transmission intervals for separating any two consecutive signal bursts and a controller 42 for the generation circuitry, to cause an average value of the inter-transmission intervals over a period of time to vary, preferably to increase. This feature enhances the probability and speed of reading a transponder population of almost any size.

The present invention relates to a feeding acidifier prepared by emulsifying technology and a preparing method thereof. The invention belongs to the technical field of animal feed additive preparing. The feeding acidifier comprises the following components according to content: 8-20 parts of lemon acid; 5-20 parts of fumaric acid; 10-15 parts of phosphoric acid; 5-20 parts of malic acid; 15-25 parts of lactic acid; 6-15 parts of formic acid; 2-10 parts of acetic acid; 2-5 parts of mouthfeel modifying agent; and 3-5 parts of silicon dioxide. The invention provides a novel preparation form of acidifier and combines the physical and chemical properties of shaping material for developing the novel producing technique of acidifier according to the sustained-release control principle. The feeding acidifier prepared according to the emulsifying technique of the invention effectively settles the problem of stomach digesting of acidifier and the effect directly gets to the intestinal canal. The feeding acidifier prepared by emulsifying technology according to the invention has the advantages of reliable safety, excellent free-running property, strong moisture absorption resistance, convenient processing, growth promotion, diarrhea prevention, etc.

Embodiments of the invention relate to the use of a melatonin agonist in the treatment of free running circadian rhythms in patients, including light perception impaired patients, e.g., blind patients, and to methods of measuring circadian rhythm.

A mobile device includes frequency synthesizer circuitry for generating a channel frequency at a multiple of a reference frequency. The reference frequency is generated by a free-running crystal oscillator, without frequency stabilization circuitry. Variations in the output of the crystal oscillator are compensated by adjusting the multiplication factor of the frequency synthesizer.

A transmitter (500) is provided for transmitting host data over a wireless channel. The transmitter (500) includes a free-running timer (560) that provides a series of increasing free-running timing values; a host interface circuit (510) that receives host data from a local host circuit and a first free-running timing value from the series of increasing free-running timing values; a detection circuit (530) for detecting a global synchronizing event and receiving a second free-running timing value from the series of increasing free-running timing values, and for placing the host data and the first free-running timing value into a host interface packet; and a wireless transceiver (530) for adding the second free-running timing value and an identifier for the global synchronizing event to the host interface packet to form an air link frame, and transmitting the air link frame over a wireless channel to a remote wireless device.