Abstract: A camera system includes: a camera device which outputs a picked-up image signal in synchronization with an input synchronization signal; a camera controller which is input with the image signal of the camera device; and a relay device which is connected between the camera device and the camera controller and relays the image signal to be transmitted from the camera device to the camera controller, wherein the relay device transmits at least an externally input synchronization signal to the camera device and outputs the image signal to the camera device in synchronization with the externally input synchronization signal.

Abstract: The present invention relates to an information processing device and method, program, and communication system, whereby encoded data can be transmitted with low delay. A data control unit 137 causes encoded data supplied in order from lowband component to be temporarily accumulated in a memory unit 301 and counts the code amount of the encoded data accumulated, cuts off obtaining of encoded data at the stage where the encoded data reaches a predetermined amount, reads out part or all of encoded data accumulated in the memory unit 301, and supplies to a packetizing unit 302 as return encoded data. The present invention can be applied to, for example, a digital triax system.