Abstract: In accordance with an embodiment of the present invention a microprocessor in the horizontal phased lock loop reads the horizontal timing with respect to the sync input and provides an increment inch to the horizontal discrete time oscillator to make corrections in its timing to maintain lock to the sync input. The horizontal discrete time oscillator output is used to produce a pixel clock which drives the color discrete time oscillator in a color phased locked loop. A microprocessor reads a phase error between the color burst input and the color local oscillator frequency and writes an increment incsc to the color discrete time oscillator to maintain lock to the color burst. The horizontal phase locked loop adjusts inch that varies about nominal increment (nom_inch) by ?h. The feed forward error correction for the adjustment to the color discrete time oscillator is the nomimal increment (nom_incsc) and a feed forwarded scaled version of ?h.

Abstract: The described techniques automatically change the notification mode used by a mobile communications device to alert a user of an incoming communication to the mobile communications device. The notification mode is changed in response to a detected environmental condition. The mobile communications device monitors one or more environmental conditions, such as motion, light, sound, and heat, and compares the detected level of each environmental condition to a predetermined threshold. In response to the comparison result, the mobile communications device automatically adjusts the notification mode used to alert a user to an incoming communication. In some implementations, the notification mode change may be triggered only after the environmental condition persists for a predetermined interval of time. In some implementations, the types of automatic notification mode changes used may be based on a preference of a user and may be set through the use of an Internet protocol interface.

Abstract: Caller Select allows the user to select incoming telephone numbers in the Caller ID that he wishes to receive and will ring the telephone 34; all other numbers will be rejected and not allowed to ring the telephone 34. Numbers may programmed either by pressing an enter switch 24 during a review controlled by a switch 26 or by going into the program mode by pressing a mode switch 22 and pressing buttons on a touch tone phone 34. The operation is controlled by software running in a low power microprocessor 16. The Caller Select mode may be turned off by a switch 28 which in display of the Caller ID only and ringing by all calls.

Abstract: A phase-locked loop is provided which is operable to lock the sampling clock (pixel clock) to the incoming horizontal sync pulse contained within composite video information. Given the input signal is a VCR signal or a normal noise-free signal, there exists two modes of operation, coarse lock mode and fine lock mode, which are used in controlling the phase-locked loop. In the coarse lock mode, coarse corrections are made to a horizontal discrete time oscillator so that a fast lock may be achieve using the fine lock mode. Coarse corrections are based on a normalized sum of weighted pixels collected within a narrow gate window. Lock is achieved when the falling edge is centered within the window. Given the input signal is a television signal having noise, there exists one mode of operation where the flat window phase detector is used instead of coarse lock mode to bring the sync edge to fall within the window, where the flat window normalization constant is tuned.

Abstract: A SECAM decoder and an FM modulator therefor are disclosed, in which a demodulated color signal is provided to indicate deviations in the frequency of modulated color information from a nominal subcarrier frequency. The demodulator comprises numerator and denominator filters operating on the modulated color information, and a divider providing a ratio result by dividing the numerator filter output by the denominator filter output. The demodulator may include two sets of numerator and denominator filters offset in phase from one another, where one of the two sets is selectively employed in order to mitigate divide-by-zero problems. Also disclosed are methods for demodulating digitized FM color signals in a SECAM decoder.

Abstract: Caller Select allows the user to select incoming telephone numbers in the Caller ID that he wishes to receive and will ring the telephone 34; all other numbers will be rejected and not allowed to ring the telephone 34. Numbers may programmed either by pressing an enter switch 24 during a review controlled by a switch 26 or by going into the program mode by pressing a mode switch 22 and pressing buttons on a touch tone phone 34. The operation is controlled by software running in a low power microprocessor 16. The Caller Select mode may be turned off by a switch 28 which in display of the Caller ID only and ringing by all calls.

Abstract: A color comb filter (46), video decoder (40) and method for separating chroma (U,V) and luma (Y) signals from a composite video signal (41). The comb filter (46) includes circuitry (48) for generating color filter selections for filtering a chroma video signal (41) and control logic (62) for determining the filter selections based on color boundary properties of the chroma video signal (U,V). The video decoder (40) includes a comb filter (46), a demodulator (42), low pass filter (44), a remodulator (48) and a subtractor (50). The filtered, remodulated chroma signal (Uout,Vout) is subtracted from the composite video signal (41) to produce a luma signal absent hanging dots and false colors.

Abstract: A microprocessor controlled color phase locked loop is provided which provides flexibility and adaptability for different television standards and sampling rates. Color burst phase error and color burst amplitude information are stored in data registers located at the output of the phase locked loop's low pass filter rather than at the output of the color demodulator.

Abstract: In accordance with an embodiment of the present invention a microprocessor in the horizontal phased lock loop reads the horizontal timing with respect to the sync input and provides an increment inc h to the horizontal discrete time oscillator to make corrections in its timing to maintain lock to the sync input. The horizontal discrete time oscillator output is used to produce a pixel clock which drives the color discrete time oscillator in a color phased locked loop. A microprocessor reads a phase error between the color burst input and the color local oscillator frequency and writes an increment inc sc to the color discrete time oscillator to maintain lock to the color burst. The horizontal phase locked loop adjusts inch that varies about nominal increment (nom_inch) by &Dgr;h. The feed forward error correction for the adjustment to the color discrete time oscillator is the nonimal increment (nom_incsc) and a feed forwarded scaled version of &Dgr;h.

Abstract: A phase-locked loop is provided which is operable to lock the sampling clock (pixel clock) to the incoming horizontal sync pulse contained within composite video information. Two modes of operation, coarse lock mode and fine lock mode, are used in controlling the phase-locked loop. In the coarse lock mode, coarse corrections are made to a horizontal discrete time oscillator so that a fast lock may be achieve using the fine lock mode. Coarse corrections are based on a normalized sum of weighted pixels collected within a narrow gate window. Lock is achieved when the falling edge is centered within the window.

Abstract: A method for automatic color gain control utilizes a plurality of process blocks which compare the measured burst amplitude with an ideal burst amplitude, and then generate necessary scaling factors to automatically control the gain. Each of the process blocks utilizes recursive relationships for accumulating values, which recursive relationships require no multiplications but, rather, require only additions and/or subtractions, which additions and/or subtractions require merely an adder with a change of sign. A scale value is generated which represents the ratio of the measure to ideal burst amplitude value, which is then utilized to generate Cr and Cb in a YCrCb digitized format. This is utilized to scale the U and the V values in a YUV digitized format.

Abstract: An array processor includes a master array controller and sequencer (12) and a plurality of slave processors (20a)-(20n). The master generates sequencing commands for sequencing instruction flow in each of the slave processors. The slave processors generate addresses for associated memories (34a)-(34n). The data outputs of the memories are interfaced through a cross point switch (22) to a slave data processor (24). The master (12) is operable to initialize all of the slave devices to a starting address for an internal routine and sequence the instruction flow therein in a synchronous and parallel manner to execute a particular task.

Abstract: An array processor operating in the forced I/O mode includes a master controller (12) for generating sequenced commands for output to slave address generators (52) (54) and (62). The slave (52) and (54) operate in a data processing and a forced I/O mode. Each of the slaves have a set of data instructions and a set of I/O instructions therein. The data instructions are sequenced through in accordance with the sequenced commands generated by the master controller (12) synchronously and in parallel with the other slaves to generate addresses for memories (76) and (80). The master controller (12) initiates the I/O mode with runs independent and asychronously with respect to the sequenced commands to interface with an external I/O device (98). This data is transferred to the associated data memory and, when full, the operation alternates such that the other slave is in the I/O mode and the other data memory is utilized for storing I/O data.