Radio modem

• US 5,754,588 A
• Filed: 08/15/1995
• Issued: 05/19/1998
• Est. Priority Date: 08/15/1994
• Status: Expired due to Term

• Current Assignee: Lenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
• Original Assignee: NEC Corporation
• Inventors: Tanaka, Masahiko
• Primary Examiner(s): Vo, Don N.
• Application Number:
  US08/515,464
• Time in Patent Office: 1,008 Days
• Field of Search: 375/222, 375/377, 340/825.22, 340/825.44, 340/825.72, 364/130, 364/138, 371/68.2, 371/71, 379/58, 379/59, 455/33.1, 455/54.1, 455/89, 455/90, 455/93, 455/95, 455/128, 455/129
• US Class Current: 375/222
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations
• CPC Class Codes: H04B 1/38 Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving

Abstract

An infra-interface section 15 in a radio modem has a function of radio interfacing with a plurality of radio lines. An interface section 16, conforming to the PCMCIA standard, connects with a data terminal unit to which this radio modem is to be connected. A memory section 17 stores information transmitted or received by the infra-interface section 15. A display section 14 displays the stored transmit/receive information. A control section 18 controls all these sections. By having transmit/receive information, when data are transmitted or received via radio lines, stored into the memory section 17 and then displayed in the display section 14, the user of the terminal is enabled to recognize, by locking at the display section, the plurality of conditions of transmission/reception on a real time basis without confusing them with one another.

Claims

1. A radio modem, connected to a data terminal unit, for performing data communication with other terminal units over radio lines, said radio modem comprising:

an infra-interface means for interfacing with a plurality of radio lines;

an interface means, conforming to a PCMCIA standard, for connecting with said data terminal unit;

a memory means for storing information transmitted or received by said infra-interface means; and

a control means for controlling said infra-interface means, said interface means and said memory means, said control means comprising;

a clock function;

an internal storage means for temporarily storing transmit/receive information which has been transmitted or received and the time at which it was transmitted or received, said transmit/receive information being stored in said internal storage means at the time of transmission/reception and said transmit/receive information being stored into said memory means after the completion of transmission/reception.

2. A radio modem, as claimed in claim 1, wherein said memory means stores transmission/reception time information, called/calling party information, radio line information, the condition of transmission/reception, and data build-up information regarding the presence or absence of received data.

3. A radio modem, as claimed in claim 2, further comprising a display means for displaying the transmit/receive information stored in said memory means.

4. A radio modem, as claimed in claim 3, wherein said display means displays various information in a set on a call-by-call basis.