Showing papers on "Handshake published in 1986"
Patent•
25 Nov 1986
TL;DR: In this paper, a method and system for generating a synchronized handshake between communicating parts of a digital system operating from a common clock is described, where a request signal is sent from an initiating station (10) to a responding station (12). The responding station acknowledges receipt of the request by sending an acknowledge signal back to the initiating station, thereby completing a so-called handshake.
Abstract: A method and system are provided for generating a synchronized handshake between communicating parts of a digital system operating from a common clock. A request signal is sent from an initiating station (10) to a responding station (12). The responding station acknowledges receipt of the request by sending an acknowledge signal back to the initiating station, thereby completing a so-called handshake. In accordance with the invention both the request and acknowledge signal are pulses of a fixed duration greater than one but less than two clock cycles. A new request signal may be transmitted concurrently with the reception of an acknowledge signal, resulting in a maximum handshake rate of one half of the common clock rate.
25 citations
Patent•
28 Aug 1986
TL;DR: The preferred embodiment (11) of the modem comprises a control unit (13), a memory (27), a switch (14), and a modem engine (17), which establishes communications with a modem (30) using conventional handshake methods.
Abstract: The preferred embodiment (11) of the modem comprises a control unit (13), a memory (27), a switch (14), and a modem engine (17). The modem engine (17) establishes communications with a modem (30) using conventional handshake methods. The control unit (13) then initiates a special handshake sequence composed of nonprintable, opposing characters to the modem (30) via the switch (14) and the modem engine (17). If the modem (30) completes the special handshake sequence then the control unit (13) and the modem (30) exchange the desired information. If the modem (30) does not complete the special handshake sequence then the preferred embodiment (11) functions as a conventional modem. The use of nonprinting, opposing characters for the special handshake sequence prevents the special handshake sequence from adversely affecting the external devices (10) (34).
22 citations
Patent•
26 Jun 1986
TL;DR: In this article, the authors proposed a handshake transmission protocol to make handshake transmission possible with easy procedures by using one handshake line and pulling up always this line to the high level, where the transmission end 1 releases driving of the handshake line after a preliminarily determined time so that the reception end 2 can detect the fall of a handshake line 12.
Abstract: PURPOSE:To make a handshake transmission possible with easy procedures by using one handshake line and pulling up always this line to the high level. CONSTITUTION:When a handshake line 12 is in the high level, a data line 11 is driven by a driver 3 in a transmission end 1. Next, the handshake line 12 is driven to the low level by the first open collector driver 15 in the transmission end 1. Meanwhile, the fall of the handshake line 12 is detected in the reception end 2, and the handshake line 12 is driven to the low level by the second open collector driver 6. The transmission end 1 releases driving of the handshake line 12 after a preliminarily determined time so that the reception end 2 can detect the fall of the handshake line 12. The reception end 2 releases driving of the handshake line 12 after receiving data through a data receiver 4. The transmission end 1 releases driving of a data line 11 after detecting that the handshake line 12 goes to the high level.
1 citations