JP2013218582A5 - - Google Patents

Description

  A configuration when the signal processing apparatus 100 of FIG. 1 is applied to an imaging apparatus will be described with reference to FIG. In FIG. 6, an imaging unit 401 captures an image of a subject and outputs a moving image signal. The camera signal processing unit 402 performs processing such as image quality correction or screen size change on the moving image signal output from the imaging unit 401, and outputs the processed video signal to the correction unit 403 and the output processing unit 406. The correction unit 403 corrects the deterioration due to the flaw of the image pickup element in the image pickup unit 401 for the moving image signal from the camera signal processing unit 402. The image processing unit 404 performs further necessary camera signal processing on the moving image signal from the correction unit 403 and outputs the processed signal to the recording processing unit 405. The recording processing unit 405 performs processing necessary for recording, such as compression encoding processing, on the moving image signal from the image processing unit 404, and records it on a recording medium. The output processing unit 406 performs processing necessary for outputting the moving image signal from the camera signal processing unit 402 to the outside, and outputs it to the outside of the apparatus.

  In FIG. 6, an image processing unit 404 corresponds to the master device 101 of FIG. Further, the correction unit 403 and the camera signal processing unit 402 correspond to the slave devices 102 and 103 in FIG. The output processing unit 406 corresponds to the slave device 104 in FIG. In this embodiment, since a control command is transmitted between the camera signal processing unit 402 and the output processing unit 406 via the serial bus 106, the LSI constituting the output processing unit 406 is replaced with the camera signal processing unit 402. It can be arranged at a position relatively distant from the LSI to be configured. For example, the output processing unit 406 is desirably arranged in the vicinity of an external connection terminal. However, in this embodiment, the degree of freedom in design is improved in such a case.

Claims (9)

A first device connected to the parallel bus;
A second device connected to the parallel bus;
A third device connected to the second device via a serial bus,
The first device transmits a first command to the second device and a second command to the third device to the second device via the parallel bus;
The second device performs processing according to the first command received from the first device via the parallel bus, and also performs the second command from the first device via the parallel bus. When a command is received, the signal processing apparatus transmits the second command to the third device via the serial bus.   The first device transmits a command together with an address signal, and the second device sends the first command and the second command based on the value of the address signal received from the first device. The signal processing apparatus according to claim 1, wherein the signal processing apparatus detects the signal processing apparatus.   The second device has a memory for storing a command received from the first device, and the address signal is a signal for designating an address of the memory. A signal processing device according to 1.   The second device converts the second command received from the first device via the parallel bus into a format for transmission via the serial bus and transmits the second command to the third device. The signal processing apparatus according to claim 1.   When the second command received from the first device via the parallel bus is a command requesting a response from the third device, the second device is the third device. The signal processing apparatus according to claim 1, wherein the right to use the parallel bus is occupied until a response from is received.   6. The second device according to claim 5, wherein the second device transmits the response received from the third device via the serial bus to the first device via the parallel bus. Signal processing device.   The signal processing apparatus according to claim 1, wherein the first device includes a CPU that generates the control command.   The signal processing according to claim 1, wherein each of the first device, the second device, and the third device is configured as one integrated circuit. apparatus.   The second device includes a circuit that performs image processing including a process of changing a screen size of an image signal output from the imaging unit, and the first device is an image signal processed by the second device. And a circuit for performing a process for outputting the image signal processed by the second device to the outside. 9. The signal processing device according to any one of 1 to 8.