摘要:
Image data is accurately resized in real time by downscaling. An image signal generating apparatus includes a parameter generator that dynamically generates a parameter PM and an image signal generator that repeats processing of generating an output image signal Q in response to each sampling signal B. Each parameter includes a division ratio parameter DP. The division ratio parameter DP corresponds to a ratio of a second time period Tb and a third time period Tc other than the second time period Tb. The second time period Tb is a time interval until the generation of a sampling signal B n in a first time period Ta until input of an immediate timing signal A k+1 since input of a last timing signal A k . The image signal generator repeatedly generates a first weighted signal Wa and a second weighted signal Wb of the image signal in response to each sampling signal B n .
摘要:
A method and an apparatus for sending and receiving audio data, so as to solve the problem that in the prior art, a simulating audio and video transmission system is complex in cable connection structure. The audio data is overlaid at a preset position of a video blanking interval of video data, sending and receiving of audio signals are carried out, and co-cable transmission of the audio and video data can be achieved.
摘要:
The present invention relates to a main electronic device (1) for communicating within a network (7) comprising an interface (6) for enabling communication within the network (7) and a controller (4) for sending polling messages via the network (7) to logical addresses via said interface (6) in order to request information from at least one further electronic device (1a, 1b ... If). The present invention further relates to a method for operating a main electronic device (1) for communicating within a network (7).
摘要:
The present invention relates to a main electronic device (1) for communicating within a network (7) comprising an interface (6) for enabling communication within the network (7) and a controller (4) for sending polling messages via the network (7) to logical addresses via said interface (6) in order to request information from at least one further electronic device (1a, 1b ... 1f). The present invention further relates to a method for operating a main electronic device (1) for communicating within a network (7).
摘要:
An analog TV receiver implementation on DSP allows mobile platforms to view analog TV broadcasting on LCD displays. The analog television receiver includes a demodulator for demodulating a received analog television signal, an analog to digital converter for digitizing the demodulated television signal and a digital signal processor for producing display signals from the digitized television signals. The digital signal processor being programmed to search for a horizontal synchronization signal in the television signal, track the horizontal synchronization signal and search for a vertical synchronization signal in the television signal. Next the processor separates a luminance and a pair of chrominance components of the television signal and demodulates the pair of chrominance components. Red, green and blue values are constructed from the demodulated chrominance components and the luminance components. Display signals are produced from the red, green and blue values.
摘要:
A system (400) such as an audio and/or video system includes a multiplexed analog-to-digital converter ('ADC') arrangement (500). The arrangement (500) includes an ADC (530) for converting first and second analog signals to first and second digital signals, respectively, and for outputting the first digital signal during a first time interval and outputting the second digital signal during a second time interval. A digital filter (550) is provided for filtering the first and second digital signals to generate first and second filtered signals, respectively, and for outputting the first and second filtered signals in a time-aligned manner during a third time interval.
摘要:
Die Erfindung betrifft eine Schaltungsanordnung zur Steuerung eines Oszillators. In einer ersten Phasenvergleichsschaltung (25) wird ein Synchronisiersignal mit in vorgegebener Folge wechselnder Phase und ein erstes Oszillatorsignal verglichen. Das von der ersten Phasenvergleichsschaltung erzeugte Ausgangssignal wird mit einem in einer Korrekturschaltung (40) gebildeten Korrektursignal überlagert, so daß die durch die Phasenwechsel des Synchronisiersignals bedingten Schwankungen eliminiert sind. Die Korrekturschaltung (40) wird abgeschaltet, wenn der Betrag der Phasenabweichung einen bestimmten Grenzwert überschreitet.
摘要:
Bei einer Farbartregelschaltung eines digitalen Fernsehempfängers liegt der Systemtakt (cl) im Bereich der vierfachen Farbträgerfrequenz. Das ursprünglich empfangene Farbsynchronsignal (cyʹ) wird mittels einer rein digitalen Phasen-Regelschleife an den Systemtakt (cl) in Frequenz und Phase angekoppelt. Der Phasendifferenzwinkel zwischen dem Farbsynchronsignal (cy) und dem Systemtakt (cl) erscheint als Sinus- oder Kosinuswert in den beiden Standard-Farbdifferenzsignalen (d1, d2) des Farbdemodulators (cd) während des Empfangs des Farbsynchronsignals (cy). Eines der Standard-Farbdifferenzsignale, das (B-Y)-Farbdifferenzsignal (d1), speist über ein Schleifenfilter (sf), das die Zeilenfrequenz unterdrückt einen digitalen Oszillator (do). Dieser bestimmt die Umlauffrequenz eines etwa mit konstanter Winkelgeschwindigkeit umlaufenden Farbtoneinstellwinkel (w). Dessen jeweiliger Sinus- bzw. Kosinuswert wird als Datenwert aus einem ersten bzw. zweiten Festwertspeicher (rs, rc) ausgelesen und speist den Sinus- bzw. Kosinus-Eingang (5, 6) des Farbtoneinstellers (t) in der Rechenstufe (g), welche das Farbsynchronsignal (cy) und das Farbartsignal (cr) erzeugt.
摘要:
Receiving apparatus for receiving multiplexed analogue component signals each of which represents a line of a television picture and includes a burst of digital signals, at least one of the multiplexed analogue component signals including at a predetermined location within its digital burst an indication of further information, the apparatus comprising a demodulating device for demodulating received multiplexed analogue component signals, means responsive to the output of the demodulating device for synchronising the receiving apparatus to the received multiplexed analogue component signals, and a data extraction circuit responsive to the synchronising means for extracting from the demodulated signals the indication of further information and for controlling the operation of the demodulating device in accordance with the further information.