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The replay operation of key input

IP.com Disclosure Number: IPCOM000014874D
Original Publication Date: 2001-Jun-26
Included in the Prior Art Database: 2003-Jun-20
Document File: 1 page(s) / 49K

Publishing Venue

IBM

Abstract

This article describes the automatic key replay operation. A HUB box loaded with MPU and Non Volatile Memory is requried for perfoming it. The HUB box is connected between some keyboards and PC keyboard port and intercepts all key scan codes. The scan codes are recorded with the timer interval on the Non Volatile Memory and reprodued without intervention at any time.The user can load the key mapping table in the HUB Box and assign any key to the RECORD START KEY,RECORD STOP KEY or REPEAT KEY. And any operation from the RECORD START KEY to the RECRD STOP KEY will be replayed repeatedly by pressing the REPEAT KEY . If the user try to reproduce the operation,it may be mistaken in the long term and the interval will be not correct. So this fucntion can reduce much time and cost.

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The replay operation of key input

    This article describes the automatic key replay operation. A HUB box loaded with MPU and Non
Volatile Memory is requried for perfoming it. The HUB box is connected between some keyboards and PC
keyboard port and intercepts all key scan codes. The scan codes are recorded with the timer interval
on the Non Volatile Memory and reprodued without intervention at any time.The user can load the key
mapping table in the HUB Box and assign any key to the RECORD START KEY,RECORD STOP KEY or REPEAT
KEY. And any operation from the RECORD START KEY to the RECRD STOP KEY will be replayed repeatedly
by pressing the REPEAT KEY . If the user try to reproduce the operation,it may be mistaken in the
long term and the interval will be not correct. So this fucntion can reduce much time and cost.

The main two uses are as follows.

1. A re-production test for a field problem

2. A longr run test for a system verification

This structure of this HUB Box is shown in the Figure-1.

PC

K ybd

P o rt

Scan Code

HUB Box

NVRAMMPU

Key Table

ERMTIK e y T rac e

Scan Code

Scan Code

Keyboard

Keyboard

Figure-1

1

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