Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2001-09-28
2003-09-16
Vo, Nguyen T. (Department: 2685)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C379S433070
Reexamination Certificate
active
06622025
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to portable communication devices, and in particular, relates to a user input for entering information or commands into a portable communication device.
BACKGROUND OF THE INVENTION
Portable communication devices have keypads that the user employs for various purposes such as to enter alphanumeric characters or commands. Portable communication devices include: radiotelephones, pagers, personal digital assistants (PDA), two-way radios, accessories for use therewith, and the like. Radiotelephones, for example, typically have a matrix keypad with three columns and four rows for entering the numbers 0-9, the letters a through z (some without q and z), and the “#” and “*” symbol. Cellular radiotelephones also include function keys, for example SND, END, and CLR for entering commands. Pushing a key enters the desired data into the radiotelephone device. The radiotelephone device interprets the data, for example a phone number when the numbers on the standard keypad are actuated, or executes a function, for example dialing a phone number when the SND key is actuated. Although users are very familiar with standard keypads, they are relatively large, require two-hands to hold the phone and dial the number, and most users must look at the keys during dialing.
Some radiotelephone devices have a hands-free voice dialing function, or voice recognition mode, to facilitate hands free operation. In voice recognition mode, the user's speech, such as a name, phone number or a phone command, is converted to data and compared to individual pre-stored data sets. The pre-stored data sets correspond to pre-recorded speech provided during a registration process. The input speech is matched to a data set, whereby a positive speech recognition result is obtained. When a match occurs, an automatic dialing operation is executed. Although voice recognition systems provide a means for inputting alphanumeric information and controlling device operation without using a full keypad, they are not provided on all portable communication devices. Additionally, voice control operation can be adversely impacted by environmental noise or a change of user.
What is needed is a method of inputting data and controlling radiotelephone device operation that is easy to use, reliable and can be operated using fewer keys.
REFERENCES:
patent: 5754645 (1998-05-01), Metroka et al.
patent: 6226534 (2001-05-01), Aizawa
Furukawa Shigeharu
Motorola Inc.
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