An image processing device includes an interface and a control circuit. The interface is configured to receive input line signals in synchronization with input horizontal synchronization signals, respectively. The control circuit is configured to store line image data contained in each of input line signals in the order of reception, generate internal horizontal synchronization signals, and output internal line signals containing the line image data in the input line signals, in synchronization with the internal horizontal synchronization signals, respectively. The input line signals include a first input line signal containing first line image data, and the internal line signals include a first internal line signal containing the first line image data. A horizontal cycle of the internal horizontal synchronization signal corresponding to the first internal line signal is less than a horizontal cycle of the input horizontal synchronization signal corresponding to the first input line signal.

Disclosure herein includes descriptions of a method for transmission of digital audio over analog video data with a single cable. The method comprising receiving, by a video transmitter, a digital video signal and one of a digital or an analog audio signal. Sampling, by an audio analog-to-digital converter (ADC), the audio signal if it is an analog audio signal. Storing, in a First-in-First-Out (FIFO) buffer, digital audio data corresponding to the sampled analog audio signal; reading, by an arbiter, the digitized audio samples, in response detecting an availability of data in the FIFO buffer and formatting the serialized audio bits with a digital start code; inserting the serialized audio bits and the digital start code into a blanking period of the digital video signal, thereby generating a combined digital audio and video signal and converting, by a digital-to-analog converter (DAC), the combined digital audio and video signal to analog, thereby generating a combined analog audio and video stream including audio data in a native form; and transmitting the combined analog audio and video stream to a receiver in one direction. In another embodiment, an analog signal is transmitted in the opposite direction.

An image processing device includes an interface and a control circuit. The interface is configured to receive input line signals in synchronization with input horizontal synchronization signals, respectively. The control circuit is configured to store line image data contained in each of input line signals in the order of reception, generate internal horizontal synchronization signals, and output internal line signals containing the line image data in the input line signals, in synchronization with the internal horizontal synchronization signals, respectively. The input line signals include a first input line signal containing first line image data, and the internal line signals include a first internal line signal containing the first line image data. A horizontal cycle of the internal horizontal synchronization signal corresponding to the first internal line signal is less than a horizontal cycle of the input horizontal synchronization signal corresponding to the first input line signal.

A dual-aperture camera comprising a first camera having a first sensor and a first image signal processor (ISP), the first camera operative to output a first stream of frames, a second camera having a second sensor and a second ISP, the second camera operative to output a second stream of frames, and a synchronization and operation control module configurable to control operation of one camera in a fully operational mode and operation of the other camera in a partially operational mode and to output an output of the fully operational camera as a dual-aperture camera output, whereby the partially operational mode of the other camera reduces a dual-aperture camera the power consumption in comparison with a full operational mode of the other camera.

An image capturing apparatus comprises an input terminal for synchronization with another image capturing apparatus; a generating unit that generates a video signal using an image capturing unit; a first detecting unit that detects an input of a first synchronization signal; a second detecting unit that detects an input of a second synchronization signal; a first synchronization unit that carries out a first synchronization process for synchronizing the video signal on the basis of the first synchronization signal; a second synchronization unit that carries out a second synchronization process for synchronizing the video signal on the basis of the second synchronization signal; and a control unit that carries out control so that when the first synchronization signal has been detected while the second synchronization process is being executed, the second synchronization process is stopped and the first synchronization process is executed.

An image capturing apparatus comprises an input terminal for synchronization with another image capturing apparatus; a generating unit that generates a video signal using an image capturing unit; a first detecting unit that detects an input of a first synchronization signal; a second detecting unit that detects an input of a second synchronization signal; a first synchronization unit that carries out a first synchronization process for synchronizing the video signal on the basis of the first synchronization signal; a second synchronization unit that carries out a second synchronization process for synchronizing the video signal on the basis of the second synchronization signal; and a control unit that carries out control so that when the first synchronization signal has been detected while the second synchronization process is being executed, the second synchronization process is stopped and the first synchronization process is executed.

An electronic device for displaying an image includes: a display; a communicator configured to transmit, to an image-capturing device connected to the electronic device, synchronization information for synchronization and receive, from the image-capturing device, a first image, image-capturing time information of the first image generated based on the synchronization information, and position information on which the first image was captured; a memory configured to store one or more instructions; and a processor configured to execute the one or more instructions stored in the memory, wherein the processor is further configured to control, by executing the one or more instructions, one or more images to be obtained, a second image corresponding to the first image to be determined from among the one or more images based on the image-capturing time information of the first image and the position information on which the first image was captured, and a third image obtained by synthesizing the first image and the second image to be displayed on the display.

A method, apparatus and terminal device for synchronous exposure applicable to a primary camera in a multi-camera system is provided. The method includes: after receiving an instruction for synchronous exposure, obtaining a plurality of initial hardware time codes by acquiring an initial hardware time code of each camera in the multi-camera system, determining a synchronization reference value according to the plurality of initial hardware time codes and, based on the synchronization reference value and the initial hardware time code of each camera, determining a frame compensation value corresponding to each camera in the multi-camera system, and transmitting the frame compensation value of each secondary camera to the corresponding secondary camera, such that when the primary camera adjusts an image length according to the frame compensation value of the primary camera, each secondary camera adjusts an image length of the image according to the corresponding frame compensation value, to synchronize exposure time of all cameras in the multi-camera system. The provided method may improve the accuracy of synchronous exposure of multiple cameras in the multi-camera system under complex applications.

A video processing method includes determining a first time point corresponding to a frame header of a video frame, determining a time period for processing at least a portion of the video frame, determining a second time point based on the first time point and the time period, adjusting a third time point corresponding to a frame header of a physical layer frame to synchronize the third time point with the second time point, and starting to transmit the video frame at the second time point.

A synchronization signal output apparatus obtains time from a time server to synchronize an internal clock with the time of the time server, obtains an error between the time of the time server and time of the internal clock, and generate and output a synchronization signal. The apparatus sets, based on a magnitude of the error, an operation mode for generating and outputting the synchronization signal, and generates and outputs the synchronization signal at the timing that is based on the operation mode.