초록 ▼

An electronic mail system adapted to provide a client terminal device side with a nonread-read executive function for checking whether or not a receiving side has read an electronic mail. The out-going side client terminal device adds request information for read information notice to the electronic

An electronic mail system adapted to provide a client terminal device side with a nonread-read executive function for checking whether or not a receiving side has read an electronic mail. The out-going side client terminal device adds request information for read information notice to the electronic mail and transmits the electronic mail to the in-coming side client terminal device. After the in-coming side client terminal device reads the electronic mail, it then sends the read information to the out-going side client terminal device.

대표청구항 ▼

An electronic mail system adapted to provide a client terminal device side with a nonread-read executive function for checking whether or not a receiving side has read an electronic mail. The out-going side client terminal device adds request information for read information notice to the electronic

An electronic mail system adapted to provide a client terminal device side with a nonread-read executive function for checking whether or not a receiving side has read an electronic mail. The out-going side client terminal device adds request information for read information notice to the electronic mail and transmits the electronic mail to the in-coming side client terminal device. After the in-coming side client terminal device reads the electronic mail, it then sends the read information to the out-going side client terminal device. e, IEEE Transactions on Communications, vol. 41, No. 6, pp. 998-1008 (Jun. 1993). Fischer, Signal Mapping for PCM Modems, V-pcm Rapporteur Meeting, Sunriver, Oregon, USA, 5 pgs. (Sep. 4-12, 1997). Gardner, Interpolation in Digital Modems--Part I: Fundamentals, IEEE Transactions on Communications, vol. 41, No. 3, pp. 501-507 (Mar. 1993). Humblet et al., The Information Driveway, IEEE Communications Magazine, pp. 64-68 (Dec. 1996). Kalet et al., The Capacity of PCM Voiceband Channels, IEEE International Conference on Communications '93, pp. 507-511 (Geneva, Switzerland, May 23-26, 1993). Mueller et al., Timing Recovery in Digital Synchronous Data Receiver, IEEE Transactions on Communications, vol. Com-24, No. 5, pp. 516-531 (May 1976). Pahlavan et al., Nonlinear Quantization and the Design of Coded and Uncoded Signal Constellations, IEEE Transactions on Communications, vol. 39, No. 8, pp. 1207-1215 (Aug. 1991). Proakis, Digital Signaling Over a Channel with Intersymbol Interference, Digital Communications, pp. 373, 381 (McGraw-Hill Book Company, 1983). A Digital Modem and Analogue Modem Pair for Use on the Public Switched Telephone Network (PSTN) at Data Signalling Rates of Up to 56 000 Bit/s Downstream and 33 600 Bit/s Upstream, ITU-T V.90 (Sep. 1998). Series V: Data Communication Over the Telephone Network; Interfaces and voiceband modems; A modem operating at data signalling rates of up to 33 600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone type circuits, ITU-T V.34 (10/96). Bell, R.A., et al., Automatic Speed Reduction and Switched Network Back-up, IBM Technical Disclosure Bulletin, vol. 32, No. 1, pp. 154-157 (Jun. 1989). Abbiate, J.C., et al., Variable-Data Transmission Modem, IBM Technical Disclosure Bulletin, vol. 17, No. 11, pp. 3301-3302 (Apr. 1975). Data Communication Over the Telephone Network; Procedures for Starting Sessions of Data Transmission Over the General Switched Telephone Network, ITU-T V.8 (09/94). Line Quality Monitoring Method, IBM Technical Disclosure Bulletin, vol. 18, No. 8, pp. 2726-2726 (Jan. 1976). Loopback Tests for V.54 Data Communication Equipment, IBM Technical Disclosure Bulletin, vol. 32, No. 3A, pp. 295-299 (Aug. 1989). On-Line Real Time Modem Testing, IBM Technical Disclosure Bulletin, vol. 20, No. 6, pp. 2252-2254 (Nov. 1977). Pierobon, Gianfranco L., Codes of Zero Spectral Density at Zero Frequency, IEEE Transactions on Information Theory, vol. IT-30, No. 2, pp. 435-439 (Mar., 1984). Marcus, Brian H, et al., On Codes with Spectral Nulls at Rational Submultiples of the Symbol Frequency, IEEE Transactions on Information Theory, vol. IT-33, No. 4, pp. 557-568 (Jul. 1987). Fischer, Robert, et al., Signal Mapping for PCM Modems, ITU-Telecommunications Standardization Sector PCM '97-120, V.pcm Rapporteur Meeting, (Sunriver, Oregon; Sep. 4-12, 1997). Pulse Code Modulation (PCM) of Voice Frequencies, ITU-T, Recommendation G.711 (Geneva, 1972). Series G: Digital Transmission Systems; Terminal equipments--Coding of analogue signals by pulse code modulation; Pulse code modulation (PCM) of voice frequencies, ITU-T, Recommendation G.711 (Geneva, 1996). Data Communication Over the Telephone Network; Error-Correcting Procedures for DCEs Using Asynchronous-to-Synchronous Conversion, ITU-T V.42 (03/93). Improvement to Spectral Shaping Technique, Research Disclosure, V. 41, n415,415111, pp. 1550-1551 (Nov. 1998). TIA Standard Draft: North American Telephone Network Transmission Model for Evaluating Analog Client to Digitally Connected Server Modems, Telecommunications Industry Association, PN3857,Draft 10 (Feb. 1999). Davis, Gordon T., DSP and MATLAB implementation of model-based constellation generation (Sep. 18, 1998). Woodruff, K.R., et al, Automatic and Adaptive System and Efficient Communication in Noisy Communication Line Environments, IBM Technical Disclosure Bulletin, vol. 24, No. 9, pp. 4627-4629 (Feb. 1982). Godar d, D., et al., Decision Feedback Equalizer Stabilization in Adaptive Mode, IBM Technical Disclosure Bulletin, vol. 24, No. 11A, pp. 5691-5692 (Apr. 1982). Borgnis-Desbordes, P., et al., Variable-Speed Data Transmission, IBM Techincal Disclosure Bulletin, vol. 27, No. 4A, pp. 2269-2270 (Sep. 1984). Couland, G., et al., Analog Wrap Self-Test in Modems During Retrain Operations, IBM Technical Disclosure Bulletin, vol. 28, No. 6, pp. 2457 (Nov. 1985). Maddens, F., Sixteen-State Forward Convolutional Encoder, IBM Technical Disclosure Bulletin, vol. 28, No. 6, pp. 2466-2468 (Nov. 1985). Remote Modem-Type Self-Learning, IBM Technical Disclosure Bulletin, vol. 28, No. 6, pp. 2398-2399 (Nov. 1985). Maddens, F., Sixteen-State Feedback Convolutional Encoder, IBM Technical Disclosure Bulletin, vol. 28, No. 10, pp. 4212-4213 (Mar. 1986). Bell, R. A., et al., Automatic Speed Reduction and Switched Network Back-up, IBM Technical Disclosure Bulletin, vol. 32, No. 1, pp. 154-157 (Jun. 1989). Nobakht, R.A., Trellis-Coded Modulation Coding Scheme for a 19/2 Kbps Modem, IBM Technical Disclosure Bulletin, vol. 36, No. 11, pp. 167-170 (Nov. 1993). Nobakht, R.A., Unified Table Based Subset Decoder for the Viterbi Algorithm, IBM Technical Disclosure Bulletin, vol. 37, No. 09, pp. 581-587 (Sep. 1994). Nobakht, R.A., Trellis Subset Decoder Algorithm Based on a Pattern Recognition Scheme, IBM Technical Disclosure Bulletin, vol. 37, No. 10, pp. 693-697 (Oct. 1994). Abbiate, J.C., et al, Variable-Data Transmission Modem, IBM Technical Disclosure Bulletin, vol. 17, No. 11, pp. 3301-3302 (Apr. 1975). Barlet, J., et al., Full Speed Recovery in High Speed Modems, IBM Technical Disclosure Bulletin, vol. 23, No. 2, pp. 641-643 (Jul. 1980). Dialog Abstract, Sample rate converter for duplex modem, European Patent No. 285413 10/88. Dialog Abstract, Two-speed full-duplex modem for telephone network, PCT No. WO 8501407 03/85. Dialog Abstract, Digital data transmission system, European Patent No. 124674 11/84. Dialog Abstract, Facsimile communication controller, Japanese Publication No. 04-175060 (Jun. 23, 1992). Dialog Abstract, Picture communication equipment, Japanese Publication No. 03-120954 (May 23, 1991). Dialog Abstract, Radio date transmission system, Japanese Publication No. 01-179535 (Jul. 17, 1989). Dialog Abstract, Facsimile device, Japanese Publication No. 57-164654 (Oct. 9, 1982). Dialog Abstract, Data repeater, Japanese Publication No. 57-087255 (May 31, 1982). Dialog Abstract, Blinding training method for decision feedback equaliser having feed-forward and feedback filters, European Patent No. 880253 11/98. Dialog Abstract, Processing method for distorted signal received by qam receiver, European Patent No. 465851 01/92. Dialog Abstract, Establishing wireless communication channel, PCT No. WO 9905820 02/99. Dialog Abstract, High-speed rate adaptive subscriber line digital data modem, PCT No. WO 9830001 07/98. Dialog Abstract, Digital modem in digital modulation system, Japanese Patent No. 8116341 05/96. Dialog Abstract, Communication equipment and radio communication adapter, Japanese Publication No. 08-340289 (Dec. 24, 1996). Dialog Abstract, Data recording method, Japanese Publication No. 05-089597 (Apr. 9, 1993). Dialog Abstract, Transmission control system for data communication and its modem equipment, Japanese Publication No. 02-228853 (Sep. 11, 1990). Naguib, A.F., et al., Dialog Abstract, A space-time coding modem for high-data-rate wireless communications, IEEE Journal of Selected Areas in Communications, vol. 16, No. 8, pp. 1459-1478 (Oct. 1998). Denno, S., et al., Dialog Abstract, Mbit/s burst modem with an adaptive equalizer for TDMA mobile radio communications, IEICE Transactions on Communications, vol. E81-B, No. 7, pp. 1453-1461 (Jul. 1998). Naguib, A.F., et al., Dialog Abstract, A space-time coding modem for high-data-rate wireless communications, GLOBECOM 97, IEEE Global Telecommunications Conference, vo l. 1, pp. 102-109 (1997). Kobayashi, K., et al., Dialog Abstract, Fully digital burst modem for satellite multimedia communication systems, IEICE Transactions on Communications, vol. E80-B, No. 1, pp. 8-15 (Jan. 1997). Skellern, D.J., et al., Dialog Abstract, A high speed wireless LAN, IEEE Micro, vol. 17, No. 1, pp. 40-47 (Jan.-Feb. 1997). Enomoto, K., et al., Dialog Abstract, A mode switching type burst demodulator AFC, Transactions of the Institute of Electronics, Information and Communication Engineers, vol. J76B-II, No. 5, pp. 415-421 (May 1993). Betts, W., Dialog Abstract, Nonlinear encoding by surface projection, International Conference on Data Transmission--Advances in Modem and ISDN Technology and Applications (Sep. 23-25, 1992). Schilling, D.L., et al., Dialog Abstract, The FAVR meteor burst communication experiment, Military Communications in a Changing World MILCOM '91 (Nov. 4-7, 1991). Jacobsmeyer, J.M., Dialog Abstract, Adaptive trellis-coded modulation for bandlimited meteor burst channels, IEEE Journal on Selected Areas in Communications, vol. 10, No. 3, pp. 550-561 (Apr. 1992). Sato, T., et al., Dialog Abstract, Protocol configuration and verification of an adaptive error control scheme over analog cellular networks, IEEE Transactions on Vehicular Technology, vol. 41, No. 1, pp. 69-76 (Feb. 1992). Lee, L.-N., et al., Dialog Abstract, Digital signal processor-based programmable BPSK/QPSK/offset-QPSK modems, COMSAT Technical Review, pp. 195-234 (Fall 1989). Sato, T., et al., Dialog Abstract, Error-free high-speed data modem, Oki Technical Review, vol. 56, No. 133, pp. 20-26 (Apr. 1989). Seo, J.-S, et al., Dialog Abstract, Performance of convolutional coded SQAM in hardlimited satellite channels, IEEE International Conference on Communications BOSTONICC/89, vol. 2, pp. 787-791 (Jun. 11-14, 1989). Murakama, K., et al., Dialog Abstract, FEC combined burst-modem for business satellite communications use, IEEE/IECE Global Telecommunications Conference 1987, vol. 1, pp. 274-280 (Japan, Nov. 15-18, 1987). McVerry, F., Dialog Abstract, Performance of a fast carrier recovery scheme for burst-format DQPSK transmission over satellite channels, International Conference on Digital Processing of Signals in Communications, pp. 165-172 (United Kingdom, 1985). Filter, J.H.J., Dialog Abstract, An algorithm for detecting loss of synchronisation in data transmission test sets (modems), Transactions of the South African Institute of Electrical Engineers, vol. 76, No. 1, pp. 39-43 (Jan. 1985). Gersho, A., Dialog Abstract, Reduced complexity implementation of passband adaptive equilizers, IEEE Journal on Selected Areas in Communications, vol. SAC-2, No. 5, pp. 778-779 (Sep. 1984). Dialog Abstract, High-speed full-duplex modem reduces telephone connect time, EDN, vol. 27, No. 18, p. 77 (Sep. 15, 1982). Chadwick, H., et al., Dialog Abstract, Performance of a TDMA burst modem through a dual nonlinear satellite channel, Fifth International Conference on Digital Satellite Communications, pp. 63-67 (Italy, Mar. 23-26, 1981). Nussbaumer, H., Dialog Abstract, Reducing the acquisition time in an automatic equalizer, IBM Technical Disclosure Bulletin, vol. 18, No. 5, pp. 1465-1479 (Oct. 1975). Uzunoglu, V., et al., Dialog Abstract, Synchronous and the coherent phase-locked synchronous oscillators: new techniques in synchronization and tracking, IEEE Transactions on Circuits and Systems, vol. 36, No. 7, pp. 997-1004 (Jul. 1989). Minei, I., et al., Dialog Abstract, High-speed Internet access through unidirectional geostationary satellite channels, IEEE Journal on Selected Areas in Communications, vol. 17, No. 2, pp. 345-59 (Feb. 1999). Ovadia, S., Dialog Abstract, The effect of interleaver depth and QAM channel frequency offset on the performance of multichannel AM-VSB/256-QAM video lightwave transmission systems, International Conference on Telecommunications: Bridging East and West Through Communications, vol. 1, pp. 339-34