A wireless telephone has a function of monitor-outputting an operation sound as an operation key is pressed. The wireless telephone can be operated in one of three modes, namely, none push-tone output mode, normal push-tone output mode and prolonged push-tone output mode. The operation sound is generated as an user selects a certain output mode by pressing the operation key. Monitor outputs from a speaker of tile wireless telephone vary with tile output mode. Specifically, a single sound is output from the speaker if the none push-tone output mode is selected. The push-tone is output from the speaker if the normal or prolonged push-tone output mode is selected. In the normal push-tone output mode, tile push-tone is output for a constant predetermined period of time (for example, 100 msec). In the prolonged push-tone output mode, the push-tone is output for a period of time as the operation key is kept pressed. However, if the key pressing period of time is 150 msec or less, for example, the push-tone generating period is prolonged to 150 msec.
A communication device (100) operates in first and second modes of operation including a dispatch mode of operation and a telephone mode of operation. The device (100) includes a main body (124) having a top surface (126) and a cover (102). The cover 102 selectively moves between at least a first position wherein at least a portion of the top surface (126) is covered to provide for selective operation in the dispatch mode and at least a second position wherein the top surface (126) is exposed to provide for selective operation is the telephone mode of operation. The cover (102) includes a see through section (108) covering at least a portion of the display section (114) when the cover (102) is in the first position in order to protect the display section (114) and simultaneously provide access thereto. The cover (102) also include through access keys (106) which provide access to the keypad (116) even when the cover (102) is closed.
A communication device (100) operates in first and second modes of operation including a dispatch mode of operation and a telephone mode of operation. The device (100) includes a main body (124) having a top surface (126) and a cover (102). The cover 102 selectively moves between at least a first position wherein at least a portion of the top surface (126) is covered to provide for selective operation in the dispatch mode and at least a second position wherein the top surface (126) is exposed to provide for selective operation is the telephone mode of operation. The cover (102) includes a see through section (108) covering at least a portion of the display section (114) when the cover (102) is in the first position in order to protect the display section (114) and simultaneously provide access thereto. The cover (102) also include through access keys (106) which provide access to the keypad (116) even when the cover (102) is closed.
The present invention discusses fractional compensation timing circuitry (15) to track a VCO output frequency, f.sub.O, and provide highly effective error cancellation in a fractional-N PLL synthesizer. This output frequency tracking is used to suppress spurious sidebands, commonly known as spurs, in both fixed-band and multi-band wireless transceiver applications which use fractional-N PLL synthesizers. Some of the critical parameters which benefit from this type of PLL include switching time, phase noise, and reference feed-through.
A wireless communication device (101) having intuitive audio keypad navigation features is provided. Each of the keys (140-151) of a keypad (132) of the wireless communication device (101) is assigned a different audible signal (FIGS. 3-4). When a user of the wireless communication device (101) presses one of the keys (140-151), a processor (112) responds by triggering an output driver (124). The output driver (124) generates a unique output signal corresponding to the pressed key (140-151). A speaker (122) or alert circuit (126) is responsive to the triggering of the output driver (124) to generate a unique audible signal (FIGS. 3-4) associated with the unique output signal of the pressed key (140-151). In this manner, an audio feedback is provided to the user that uniquely identifies each of the keys (140-151) as they are pressed.
