Abstract: A video signal receiving device comprises signal processing units which separate video components and audio components from received signals conforming to HDMI standard, and carry out a decoding process on the components, respectively, to thereby restore analog video signals and audio signals, a detecting unit which detects a change in received signals to generate a first detection signal, and a detecting unit which detects a change in a received connection recognition signal to generate a second detection signal, and a mute control unit which carries out a mute process for the signal processing units not to output audio signals.

Abstract: According to one embodiment, a reception-side electronic device outputs reception specification data for receiving a signal suitable for the reception-side electronic device to a transmission-side device which selectively sends signals of the same contents in a plurality of signal forms. The reception-side electronic device includes transmitting/receiving and signal-processing units, a memory, a system setting unit, and a display processing unit which judges whether the first receiving specification data or the second receiving specification data is to be adopted as a signal to be transmitted to the transmission-side device.

Abstract: Data indicating a plurality of receiving specifications are stored in a memory unit. When an electronic device is set with its corresponding receiving specifications, data indicating the corresponding receiving specifications is read out from the memory unit and temporarily memorizes the same into a memory. When a demand for acquiring the data indicating the receiving specifications is received from the outside, the data saved in the memory unit is outputted.

Abstract: A video signal receiving device comprises signal processing units which separate video components and audio components from received signals conforming to HDMI standard, and carry out a decoding process on the components, respectively, to thereby restore analog video signals and audio signals, a detecting unit which detects a change in received signals to generate a first detection signal, and a detecting unit which detects a change in a received connection recognition signal to generate a second detection signal, and a mute control unit which carries out a mute process for the signal processing units not to output audio signals.

Abstract: A projection display device comprises a plurality of light sources which produce different primary colors of light, a plurality of display units each of which is driven by a video signal corresponding to one of the primary colors, receives light from one of the light sources which produces light corresponding to the one of the primary colors, and outputs video image light modulated by the video signal, a projection unit which projects video image light output from the display units, and a light source control unit configured to control the amount of light produced by each of the light sources independently.

Abstract: A signal selection apparatus according to one aspect of this invention comprises a plurality of digital signal input terminals, a signal processing unit having a video display unit and configured to process signals input from the plurality of digital signal input terminals and to output the processed signals to the video display unit, an input state detection unit configured to detect input states of signals to the plurality of digital signal input terminals, and a selection/supply unit configured to select, when the input state detection unit detects that signals are input to the plurality of digital signal input terminals, an input signal input to the digital signal input terminal, which is designated in advance, and supply the selected input signal to the signal processing unit.

Abstract: A projection display device comprises a plurality of light sources which produce different primary colors of light, a plurality of display units each of which is driven by a video signal corresponding to one of the primary colors, receives light from one of the light sources which produces light corresponding to the one of the primary colors, and outputs video image light modulated by the video signal, a projection unit which projects video image light output from the display units, and a light source control unit configured to control the amount of light produced by each of the light sources independently.

Abstract: Teletext data stored in a video RAM is developed in a work RAM. A CPU selectively deletes picture elements from the developed teletext data, to thereby compress the teletext data into data adapted for display in an auxiliary screen which is e.g., 1/4 of the display screen of a CRT. The compressed teletext data is written into the video RAM. A display controller supplies the compressed teletext data stored in the video RAM to a synthesizing circuit, together with an appropriate display switching signal representing a timing for switching between the compressed teletext data and a TV broadcast video signal. In accordance with the display switching signal, the synthesizing circuit selectively supplies the TV broadcast video signal and the compressed teletext data to a video output circuit. Accordingly, the teletext picture compressed to a 1/4 size is displayed on the display screen of the CRT as an auxiliary screen image, while being superimposed on the TV picture.

Abstract: A transmission signal includes a framing code and a data signal following the framing code. The framing code has a predetermined pattern which can be identified even if a bit error occurs therein. A signal fetcher fetches the transmission signal upon detecting the framing code which is included therein, on the basis of a reference signal. A framing code detector compares an output from the fetcher with pattern data corresponding to a predetermined pattern of the framing code. If the output has a bit error with respect to the pattern data, the detector generates a first framing code-detection output, for supply to the fetcher, as a signal for providing the timing. However, if the output coincides with the pattern data, the detector generates a second framing code-detection output. A reference signal generator generates the reference signal for the fetcher, in correspondence with the second framing code-detection output.