Apparatus and method for dividedly transmitting and receiving message data using connection codes appended as part of the transmission packets data field

• US 5,708,781 A
• Filed: 12/23/1994
• Issued: 01/13/1998
• Est. Priority Date: 12/29/1993
• Status: Expired due to Fees

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: Shimura, Kazuhiro, Chiashi, Eiji
• Primary Examiner(s): DINH, DUNG C
• Application Number:
  US08/363,758
• Time in Patent Office: 1,117 Days
• Field of Search: 395/200.17, 395/850, 395/849, 395/898, 395/793, 379/142, 340/286.01, 340/311.1, 340/825.44, 370/313, 370/314, 345/157, 345/168
• US Class Current: 370/313
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 88/023 with message or information receiving capability

Abstract

When one message data is transmitted dividedly at plural times to the same reception terminal, in the first transmission, a code specifying the terminal is transmitted, and then message data in a head portion of the message and a code indicating that succeeding data is present are transmitted, in the second transmission and thereafter, the code specifying the terminal is transmitted, and then data succeeding to the transmitted message data and a code indicating that the previously transmitted message data is continued from message data received at this time, and, unless the second transmission and thereafter is the last transmission, the message data having a code indicating that succeeding data is present are transmitted. The reception terminal receives transmitted data, and connects message data transmitted dividedly at plural times as one message data based on the code attached to the received message data.

Claims

1. A method of dividedly transmitting a message data, which message data is sent in a plurality of message packets, each message packet having a predetermined format, and each message packet having a predetermined data field amount, said method comprising the steps of:

transmitting a first portion of said message data and a first code indicating that a succeeding portion of said message data is present in a first message packet, wherein the first portion and the first code are transmitted within the predetermined data field amount of the first message packet; and

transmitting a subsequent portion of said message data and a second code indicating that a preceding portion is present, and also transmitting the first code if a succeeding portion is present, in a subsequent message packet;

wherein the subsequent portion, the first code, and the second code are transmitted within the predetermined data field amount of the subsequent message packet.

2. A method according to claim 1, wherein said message data includes identification information for identifying the message data.

3. A method of dividedly transmitting a message data, which message data is sent in a plurality of message packets, each message packet having a predetermined format, and each message packet having a predetermined data field amount, even if a data amount of message data exceeds an allowable amount of data, said method comprising the steps of:

displaying input message data and an indicator for indicating a range of input message data exceeding the allowable amount;

sequentially transmitting blocks of said message data, to each of which connection information indicating a connection relation between the blocks is attached, as a part of the message packet data field amount, when said input message data is in excess of said allowable amount; and

sequentially displaying the blocks of said message data.

4. A method according to claim 3, wherein said connection information includes identification information for indicating a sender of the message data.

5. A method according to claim 4, wherein said connection information includes identification information which is input by the sender.

6. A method according to claim 3, wherein said connection information includes identification information for identifying the message data.

7. A method of receiving dividedly transmitted message data, which message data is sent in a plurality of message packets, each message packet having a predetermined format, and each message packet having a predetermined data field amount, comprising the steps of:

receiving blocks of the dividedly transmitted message data;

detecting connection information which is attached to each of the blocks as part of the packet data field amount and which indicates a connection relation between the blocks;

connecting the received blocks of the message data based on said connection information to reproduce the whole message data; and

generating a sound indicating a completion of reception of the whole message data when a last block of the message data is received.

8. A method according to claim 7, wherein said connection information includes identification information for indicating a sender of the message data.

9. A method according to claim 7, wherein said connection information includes identification information for identifying the message data.

10. A message data transmitting apparatus for dividedly transmitting message data, which message data is sent in a plurality of message packets, each message packet having a predetermined format, and each message packet having a predetermined data field amount, even if a data amount of said message data exceeds an allowable predetermined data field amount, the apparatus comprising:

means for inputting the message data;

means for displaying the message data input by said inputting means;

means for transmitting the message data displayed on said displaying means;

display controlling means for displaying an indicator for indicating a range of displayed message data exceeding the allowable predetermined data field amount, and for controlling said displaying means so as to display sequentially blocks of the message data when the input message data exceeds said allowable predetermined data field amount; and

information attaching means for attaching connection information as part of the packet data field amount, indicating a connection relation between the blocks of the message data, to the blocks of the message data as a part of the message data.

11. An apparatus according to claim 10, wherein said connection information includes identification information for indicating a sender of the message data.

12. An apparatus according to claim 11, wherein said identification information is input by the sender.

13. An apparatus according to claim 10, wherein said connection information includes identification information for identifying the message data.

14. A message data receiving apparatus for receiving dividedly transmitted message data, which message data is sent in a plurality of message packets, each messages packet having a predetermined format, and each message packet having a predetermined data field amount, the receiving apparatus comprising:

means for detecting connection information which is attached to each of blocks of the message data as part of the packet data field amount and which indicates a connection relation between the blocks, and for detecting a completion of reception of the whole message data based on said connection information;

means for generating a sound indicating a completion of reception of the whole message data based on a detection result by said detecting means;

means for connecting the blocks of the message data based on said connection information to reproduce the whole message data; and

means for displaying the whole message data.

15. An apparatus according to claim 14, wherein said connection information includes identification information for identifying a sender.

16. An apparatus according to claim 14, wherein said connection information includes identification information for identifying the message data.

17. An apparatus for dividedly transmitting message data, which message data is sent in a plurality of message packets, each message packet having a predetermined format, and each message packet having a predetermined data field amount, the apparatus comprising:

means for transmitting a first portion of said message data and a first code indicating that a succeeding portion of said message data is present in a first message packet, wherein the first portion and the first code are transmitted within the predetermined data field amount of the first message packet; and

means for transmitting a subsequent portion of said message data and a second code indicating that a preceding portion is present, and also transmitting the first code if a succeeding portion is present, in a subsequent message packet and wherein the subsequent portion, the first code, and the second code are transmitted within the predetermined data field amount of the subsequent message packet.

18. An apparatus according to claim 17, wherein said message data includes identification information for identifying the message data.