| Patent Number |
Title Of Patent |
Date Issued |
| 7092540 |
Automation of signal processing apparatus |
August 15, 2006 |
| Process for accurately timed automatic alteration of electrical signals stored on a signal carrier (1) during the transmission of the original signal to a signal receiver (8, 10) in which process, for the exact dynamic alteration of the original signals, the original signals are firs |
| 7031479 |
Automation of signal processing apparatus |
April 18, 2006 |
| Signal processing apparatus is described in which at least two sets of automated signal processing functions are controlled by stored automation commands, at times dependent upon at least two respective timecode signals which may each be associated with a respective source signal sup |
| 6970753 |
Storage and transmission of one-bit data |
November 29, 2005 |
| Apparatus for storing or transmitting a one-bit digital signal comprises an input inverter for inverting a subset of the data bits of an input one-bit digital signal, to generate a bit-inverted signal; a storage or transmission medium for storing or transmitting the bit-inverted signal; |
| 6604009 |
Signal processors |
August 5, 2003 |
| A signal processor for 1-bit signals comprises a fifth order Delta-Sigma Modulator (DSM) having an input for receiving a 1-bit signal and an output at which a processed 1-bit signal is produced by a quantizer. The quantizer receives a p-bit signal from a series of five signal integration |
| 6583801 |
Data processing apparatus utilizing proximity sensing to determine whether user's hand is within |
June 24, 2003 |
| An array of user-operable controls and a proximity sensing apparatus are contained in an apparatus wherein the proximity sensing apparatus detects whether a user's hand is within a predetermined distance from the controls. Once the user's hand is a predetermined distance from the con |
| 6327631 |
Signal processing apparatus |
December 4, 2001 |
| A processing apparatus includes a network of interconnected processors comprising a plurality of signal processors for digitally processing input signals in real time to generate output signals and one or more control processors, each control processor controlling the operation of a |
| 6286020 |
Signal processor delta-sigma modulator stage |
September 4, 2001 |
| A 1-bit nth order Delta Sigma Modulator where n is at least one comprises a linear signal processing section (50) which processes the 1-bit signal and produces a p bit output, a filter (52) which filters the p bit signal, an adder (53) a quantizer Q coupled to the output of the adder (53 |
| 6188344 |
Signal processors |
February 13, 2001 |
| A 1-bit signal processor receives a 1-bit signal having a first sampling rate eg 64 fs. An upconverter (41) increases the sampling rate to eg 128 fs. A series of Delta Sigma Modulators (42, 43) processes the signal. The processed signal is down-converted by a converter (44) to 64 fs. As |
| 6167100 |
Digital signal processing |
December 26, 2000 |
| One-bit digital signal processing apparatus for generating an output one-bit signal by switching from a first to a second one-bit signal in response to a detection that m consecutive bits of the first and second signal are identical, the apparatus comprising means for varying m in de |
| 6108286 |
Method and apparatus for buffering variable-rate data |
August 22, 2000 |
| Data (such as digital audio data) is reproduced from a disk medium at a variable data rate and is then converted to a constant data rate by storing the reproduced data in a buffer memory and reading out the stored data at the constant data rate. Overload of the memory is detected and the |
| 6061007 |
1-bit signal processing system |
May 9, 2000 |
| A 1-bit signal (44) is compressed (40, 41) by dividing it into a series of n-bit words and encoding the words according to the probability of their occurrence. |
| 6057792 |
Signal processors |
May 2, 2000 |
| An nth order Delta Sigma Modulator (DSM) where n.gtoreq.1, comprising an input (4) for receiving a 1-bit input signal having a signal component and a noise component,a quantifier (Q) for re-quantizing a p-bit signal (where p>1) to 1-bit form, the re-quantised 1-bit signal being the ou |
| 6044223 |
Object code allocation in multiple systems |
March 28, 2000 |
| This invention relates to the allocation of object code in multi-processor systems. In particular, techniques are disclosed for efficiently allocating signal processing instructions to a large array of parallel signal processing units. |
| 6021204 |
Analysis of audio signals |
February 1, 2000 |
| Apparatus for analyzing audio signals from a stereo pair of audio channels, comprises: means for detecting the magnitudes of the audio signals of the two audio channels; first detector for detecting a degree of phase correlation between the audio signals of the two audio channels; and |
| 6002353 |
One-bit digital signal processing |
December 14, 1999 |
| An input stage for receiving an input signal having a signal level varying to represent successive states of a one-bit digital signal, comprises: a thresholder for detecting whether the input signal level is above or below a threshold signal level; in which: the input of the thresholder |
| 5983258 |
Apparatus and method for summing 1-bit signals |
November 9, 1999 |
| An arithmetic stage calculates the sum AX+BY where A and B are 1-bit signals and X and Y p bit coefficients X=7 and Y=3 and the corresponding bits b.sub.1 to b.sub.5 are represented together with the corresponding logical states of A and B. It will be seen that for example column b.sub.3 |
| 5964865 |
Object code allocation in multiple processor systems |
October 12, 1999 |
| This invention relates to the allocation of object code in multi-processor systems. In particular, techniques are disclosed for efficiently allocating signal processing instructions to a large array of parallel signal processing units. |
| 5944814 |
Parallel processing digital audio processing apparatus |
August 31, 1999 |
| This invention relates to the allocation of object code in multi-processor systems. In particular, techniques are disclosed for efficiently allocating signal processing instructions to a large array of parallel signal processing units. |
| 5923768 |
Digital audio processing |
July 13, 1999 |
| Digital audio processing apparatus for applying a time-varying gain to an input digital audio signal over contiguous first, second and third time periods, in which: the applied gain changes at no more than a first maximum rate of change during the first time period; the applied gain |
| 5923767 |
Digital audio processing |
July 13, 1999 |
| Digital audio processing apparatus comprises: device for detecting the magnitude of an input digital audio signal; and a variable gain element for applying a gain to the input digital audio signal dependent on the detected magnitude of the input digital audio signal, in which:(i) the app |
| 5912978 |
Loudspeaker |
June 15, 1999 |
| A loudspeaker comprises a yoke; one or more vibration driving coils disposed so as to interact magnetically with the yoke when an electrical current flows through the coils; and one or more signal amplifying devices mounted on or near the yoke, the amplifying devices being operable to |
| 5898878 |
Data processing system having capability to interpolate processing coefficients |
April 27, 1999 |
| A method and apparatus is provided for generating an interrupt signal in a data processing system, the interrupt signal being supplied to a control processor of the system to indicate the occurrence of any of a plurality of predetermined events in the system. The method and apparatus ope |
| 5881077 |
Data processing system |
March 9, 1999 |
| A method and apparatus is provided for generating an interrupt signal in a data processing system, the interrupt signal being supplied to a control processor of the system to indicate the occurrence of any of a plurality of predetermined events in the system. The method and apparatus ope |
| 5877971 |
Digital signal processing |
March 2, 1999 |
| Digital signal processing (e.g. filtering) apparatus comprises pipelined digital signal processing means for generating each output sample of an output digital signal from input samples of an input digital signal by combining the input samples with a plurality of subsets of a set of filt |
| 5802385 |
Array processing system with each processor including router and which selectively delays input/ |
September 1, 1998 |
| In one aspect, the invention provides parallel processing apparatus comprising an array of data processors 4. arranged to operate synchronously, and a plurality of data buses. Each data processor 4 has first and second I/O means 16H, 16V for transfer of data between the processor 4 a |
| 5765219 |
Apparatus and method for incrementally accessing a system memory |
June 9, 1998 |
| Data storage apparatus comprises: a memory having a plurality of addressable memory locations for storage of data items and memory address input means for receiving addresses of locations to be accessed; main input means for receiving an input address corresponding to a memory locati |
| 5740449 |
Method and apparatus for managing interrupts in a data processing system |
April 14, 1998 |
| A method and apparatus is provided for generating an interrupt signal in a data processing system, the interrupt signal being supplied to a control processor of the system to indicate the occurrence of any of a plurality of predetermined events in the system. The method and apparatus ope |
| 5712808 |
Digital signal processing |
January 27, 1998 |
| Digital signal processing (e.g. filtering) apparatus comprises pipelined digital signal processing means for generating each output sample of an output digital signal from input samples of an input digital signal by combining the input samples with a plurality of subsets of a set of filt |
