<ARTICLE>                     5
<LEGEND>
                                   EXHIBIT 27
            INTERDIGITAL COMMUNICATIONS CORPORATION AND SUBSIDIARIES
                             Financial Data Schedule
                                   (Unaudited)
</LEGEND>
<MULTIPLIER>                  1,000
       
                           

<PERIOD-TYPE>                 6-MOS
<FISCAL-YEAR-END>                                                DEC-31-1998
<PERIOD-END>                                                     JUN-30-1998
<CASH>                                                                 3,739
<SECURITIES>                                                          47,805
<RECEIVABLES>                                                          2,953
<ALLOWANCES>                                                             933
<INVENTORY>                                                           12,094
<CURRENT-ASSETS>                                                      73,137
<PP&E>                                                                23,528
<DEPRECIATION>                                                        13,227
<TOTAL-ASSETS>                                                        94,988
<CURRENT-LIABILITIES>                                                 25,761
<BONDS>                                                                    0
<PREFERRED-MANDATORY>                                                      0
<PREFERRED>                                                                0
<COMMON>                                                                 484
<OTHER-SE>                                                            63,981
<TOTAL-LIABILITY-AND-EQUITY>                                          94,988
<SALES>                                                                3,762
<TOTAL-REVENUES>                                                      56,518
<CGS>                                                                  7,639
<TOTAL-COSTS>                                                          7,639
<OTHER-EXPENSES>                                                       7,703
<LOSS-PROVISION>                                                          42
<INTEREST-EXPENSE>                                                       199
<INCOME-PRETAX>                                                       30,310
<INCOME-TAX>                                                           4,906
<INCOME-CONTINUING>                                                   25,404
<DISCONTINUED>                                                             0
<EXTRAORDINARY>                                                            0
<CHANGES>                                                                  0
<NET-INCOME>                                                          25,404
<EPS-PRIMARY>                                                            .52
<EPS-DILUTED>                                                            .52