1. An image processing apparatus comprising: an image processor configured to process an image signal and display the processed image; an audio input configured to input a user's speech; a storage configured to store a list of simple voice commands and an operation corresponding to each of the simple voice commands; a communication device configured to communicate with a server that analyzes a descriptive voice command and determine an operation corresponding to the descriptive voice command; an audio processor configured to process a voice command corresponding to the user's speech to conduct the operation corresponding to a simple voice command in the list if the first voice command is the simple voice command in the list, and to transmit the voice command to the server through the communication device if the voice command is not the simple voice command in the list; and a controller configured to, if an operation for the voice command determined by the server corresponds to the simple voice command in the list, display a guide image which recommends the corresponding simple voice command in the list, wherein the simple voice command is shorter than the descriptive voice command.
1. An image processing apparatus comprising: an image processor configured to process an image signal and display the processed image; an audio input configured to input a user's speech; a storage configured to store a list of simple voice commands and an operation corresponding to each of the simple voice commands; a communication device configured to communicate with a server that analyzes a descriptive voice command and determine an operation corresponding to the descriptive voice command; an audio processor configured to process a voice command corresponding to the user's speech to conduct the operation corresponding to a simple voice command in the list if the first voice command is the simple voice command in the list, and to transmit the voice command to the server through the communication device if the voice command is not the simple voice command in the list; and a controller configured to, if an operation for the voice command determined by the server corresponds to the simple voice command in the list, display a guide image which recommends the corresponding simple voice command in the list, wherein the simple voice command is shorter than the descriptive voice command. 4. The image processing apparatus of claim 1 , wherein the controller displays a second guide image which recommends a preset second voice command when a plurality of voice commands respectively corresponding to a plurality of user speeches are sequentially input in a state that a preset corresponding operation is set to be performed depending on when the plurality of voice commands are sequentially input or when the second voice command is input.