KR970063992A - Wireless pager capable of transmitting and receiving letters and numbers - Google Patents

Abstract

The present invention relates to a pager capable of transmitting and receiving letters and numbers, and more particularly, to a pager having a RAM 10 for temporarily storing contents received through a conventional pager and contents created through a key input unit; A ROM 11 in which a code value for KS5601 data is stored; An encoder 41 for converting the generated contents so as to be recognized by the DTMF generator; A DTMF generator 12 for generating an output of the encoder as a DTMF tone; An amplifier (13) for amplifying the output of the DTMF generator; A speaker 14 for transmitting a tone corresponding to the output signal of the amplifying unit to the telephone transmitter unit is opened and the existing key input unit 9 is used to store the sentence stored in the key together with the keys necessary for preparing the sentence and to recall the stored sentence By adding various necessary keys, a sentence to be transmitted to the other party can be directly created through the pager and transmitted to the public telephone network. Thus, if the user knows only the call number of the partner bar, the user can directly write a free sentence It is a very useful invention such that it is possible to receive the contents of a sentence transmitted from the other party anywhere in an area where a radio call can be received.

Description

Wireless pager capable of transmitting and receiving letters and numbers

Since this is a trivial issue, I did not include the contents of the text.

FIG. 1 is a block diagram of a pager of the present invention; FIG.

FIG. 2 is a detailed view of a key input unit in the present invention. FIG.

FIG. 3 is a flow chart for explaining the operation state of the pager of the present invention;

Claims (2)

An RF receiving unit 2 for receiving a radio paging signal of a predetermined frequency band transmitted from a radio paging business entity and received via an antenna 1; A decoder (3) for detecting only desired data from a carrier signal in a radio paging signal output from the RF receiver; A microcomputer 4 for performing a general control function of the pager via a predetermined program; A load driving unit 5 for selectively driving the buzzer 6 or the diaphragm 7 under the control of the microcomputer when there is a wireless call; A display unit (8) for selectively displaying current time, call number, received contents or stored contents under the control of the microcomputer; And a key input unit (9) having a menu key and a paging number search key and selectively operated by a user. The pager stores contents temporarily stored therein and content created through the key input unit (9) A RAM 10 read by the CPU 4; A ROM 11 in which a code value for Korean Standard Completion Standard (KS5601) data is stored; An encoder 41 built in the microcomputer 4 to convert the contents created by the key input unit 9 so that the DTMF generator 12 can recognize the contents; A DTMF generator 12 for generating a digital signal output from the encoder 41 in the microcomputer 4 as a DTMF tone, which is an analog signal; An amplifier 13 for amplifying the output signal of the DRMF generator 12 to a predetermined level to drive the speaker 14; A speaker 14 for transmitting a tone corresponding to an output signal of the amplifier 13 to the transmitter of the telephone is provided. The key input unit 9 is provided with keys necessary for creating a sentence, And a plurality of keys necessary for calling up a sentence. The pager is capable of transmitting and receiving letters and numbers. The method according to claim 1, wherein the keys added to the key input unit (9) are selected from the group consisting of Hangul, a vowel key and an English key, a numeric key, an on / off key, A key, a memory content search key, a function key, and an execution key. ※ Note: It is disclosed by the contents of the first application.