Pocketable wireless transmitter and receiver

• US 4,696,054 A
• Filed: 06/23/1986
• Issued: 09/22/1987
• Est. Priority Date: 12/16/1982
• Status: Expired due to Term

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Inoue, Tomohiro, Tsugei, Shinji
• Primary Examiner(s): Griffin, Robert L.
• Assistant Examiner(s): Kuntz, Curtis
• Application Number:
  US06/876,670
• Time in Patent Office: 456 Days
• Field of Search: 455/89, 455/90, 455/38, 455/228, 455/351, 455/344, 340/825-844, 358/263, 179/2 C, 379/37
• US Class Current: 455/78
• CPC Class Codes: H04B 1/40 Circuits

Abstract

A wireless communicating device comprises a receiving circuit for wirelessly receiving message serial number information and a display for displaying the message serial number information. Preferably and additionally, the device may comprise a transmission circuit for wirelessly transmitting the message serial number, preferably, repetitively.

Claims

1. A wireless communicating device for wirelessly communicating message codes representative of specific messages with one of a plurality of additional communicating devices, comprising:

an antenna;

demodulator means, connected to said antenna, for detecting and demodulating a transmission received by said antenna on a predetermined frequency band, said demodulator means converting said transmission into a bit pulse train;

said bit pulse train comprising a start bit, a binary user code specifying a particular said communicating device selected to recognize said transmission, a binary message code, and a stop bit;

means for selecting a desired user code for said wireless communicating device;

means for displaying a decimal representatio of a detected message code;

processor means, operatively connected to said demodulator means, said means for selecting and said means for displaying, for receiving said bit pulse train, for detecting a coincidence between said binary user code of said bit pulse train and said desired user code selected by said means for selecting, and for supplying said message code of said bit pulse train to said means for displaying in response to the detected coincidence;

keyboard means for introducing a desired message code to be transmitted;

said processor means being responsive to said keyboard and developing a said bit pulse train for transmission to a selected additional communicating device, said bit pulse train including a binary user code of the selected additional communicating device to receive said bit pulse train;

bit modulator means responsive to said processor means for modulating said bit pulse train into a tone burst waveform; and

oscillator means, operatively connected to said bit modulator means, for converting said tone burst waveform into a transmission, said oscillator means supplying said transmission to said antenna;

said processor means repeatedly supplying said bit pulse train to said bit modulator means and oscillator means to repetitively transmit said transmission when said device is in a transmitting mode, said processor means supplying said message code to said means for displaying only after detecting said bit pulse train received by said device a predetermined repeated number of times when in a receiving mode.

2. The device of claim 1 wherein said means for selecting may further select a binary user code of a said additional communicating device to which a desired message is to be transmitted.

3. The device of claim 1 further comprising means for selecting between the transmitting mode and the receiving mode, said means for selecting operatively connecting said demodulator means to said antenna in said receiving mode and operatively connecting said oscillator means to said antenna in said transmitting mode.

4. The device of claim 3 further comprising sound generation means, operatively connected to said processor means for control thereby, for developing an audible call sound upon detection of a coincidence between said binary user code of said bit pulse train and said desired user code.

5. The device of claim 1 further comprising:

calculator means operatively connected to said keyboard means and means for displaying, for performing mathematical calculations when in a calculation mode;

said keyboard means further introducing information to be calculated into said calculator means and said means for displaying displaying results of said mathematical calculations when said device is in a calculation mode and;

means for selecting between the calculation mode and a communication mode wherein said device transmits or receives said bit pulse trains.