Hybrid phone and method of acquiring channel in the hybrid phone
View Patent ↗Disclosed are a hybrid phone and a method of acquiring channels in the hybrid phone. The hybrid phone having a first communication mode supporting voice/low-rate data communications and a second communication mode supporting high-rate data communication includes a phone control unit having a communication processor controlling voice/data communications according to programs stored in a memory. The communication processor includes a channel acquisition processor attempting to acquire channels for the first and second communication modes. If the channel acquisition processor cannot acquire a channel for the second communication mode within a predetermined time, the channel acquisition processor stops attempting to acquire the channel for the second communication mode and reattempts to acquire channel for the first communication mode. If the channel acquisition processor acquires the channel for the first communication mode, the channel acquisition processor reattempts to acquire the channel for the second communication mode.
1. A hybrid phone having a first communication mode supporting voice and low-rate data communications and a second communication mode supporting high-rate data communication, the hybrid phone comprising:
a key input unit;
a display unit displaying menus and operation states;
a wireless communication unit extracting voice and data signals from a wireless signal transmitted and received via an antenna;
a voice processor inputting and outputting the voice signal from the wireless communication unit through a microphone and a speaker;
a memory storing execution programs and related data; and
a phone control unit having a communication processor which controls voice and data communications according to the execution program stored in the memory,
wherein the communication processor further comprises a channel acquisition processor which attempts to acquire channels for the first and second communication modes, and wherein if the channel acquisition processor does not acquire a channel for the second communication mode within a predetermined time interval, the channel acquisition processor stops attempting to acquire the channel for the second communication mode and reattempts to acquire a channel for the first communication mode, and, if the channel acquisition processor acquires the channel for the first communication mode, the channel acquisition processor reattempts to acquire the channel for the second communication mode.
2. The hybrid phone of claim 1 , wherein the channel acquisition processor attempts to acquire at least one of the channel for the first communication mode and the channel for the second communication mode according to a channel list of each communication mode contained in a Preferred Roaming List (PRL) file stored in the memory.
3. A method of acquiring a channel in a hybrid phone having a first communication mode supporting voice and low-rate data communications and a second communication mode supporting high-rate data communication, the method comprising:
attempting to acquire a channel for the first communication mode;
switching the first communication mode to an idle state after the channel for the first communication mode is acquired;
attempting to acquire a channel for the second communication mode;
switching the second communication mode to an idle state after the channel for the second communication mode is acquired, and, if the channel for the second communication mode has not been acquired, determining whether or not a time set for the channel acquisition has been elapsed; and
reattempting to acquire the channel for the second communication mode if the time set for the channel acquisition is not determined to have been elapsed, and stopping attempting to acquire the channel for the second communication mode if the time set for the channel acquisition is determined to have been elapsed.
4. The method of claim 3 , wherein at least one of the attempting to acquire the channel for the first communication mode and the attempting to acquire the channel for the second communication mode includes attempting to acquire at least one of the channel for the first communicating mode and the channel for the second communicating mode, respectively, according to a channel list of each communication mode contained in a PRL file stored in a memory of the hybrid phone.