Electrical computers and digital data processing systems: input/ – Input/output data processing – Peripheral configuration
Reexamination Certificate
1998-10-13
2001-07-10
Lee, Thomas (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Peripheral configuration
C710S029000, C710S052000, C710S125000, C712S248000
Reexamination Certificate
active
06260080
ABSTRACT:
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from an application for NOTEBOOK COMPUTER HAVING FLOPPY DISK DRIVE earlier filed in the Korean Industrial Property Office on Oct. 14, 1997 and there duly assigned Ser. No. 52637/1997.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a notebook computer having a floppy disk drive for writing and reading information to and from a floppy disk according to a control signal, and more particularly, to a notebook computer for stably operating a floppy disk driver.
2. Description of the Related Art
In general, a notebook computer includes a latch, a touch pad mouse, a power supply indicator, a Num Lock key indicator, a Caps Lock key indicator, a Scroll Lock key indicator, an indicator for indicating the operation of a hard disk drive or a floppy disk drive, a battery charge indicator, and a slot in which a floppy disk is inserted.
The structure of the inner body of a notebook computer includes a floppy disk drive a motherboard on which a processor and a memory are mounted. The floppy disk drive and the motherboard are connected via connector to communicate signals between the drive and the controller.
The floppy disk drive for reading and writing information to and from the diskette is necessarily or selectively required for the notebook computer. In the case that the floppy disk drive is mounted within the notebook computer, the floppy disk drive is a relatively large distance away from the controller, thereby causing inaccurate communication of the signals therebetween due to interference or external noise. The inaccurate signals may cause a malfunction of the floppy disk drive or may corrupt data recorded on the diskette.
The following patents each discloses features in common with the present invention: U.S. Pat. No. 5,781,028 to Decuir, entitled System And Method For A Switched Data Bus Termination, U.S. Pat. No. 5,781,029 to Baran, entitled Broadband Matching Technique For High Speed Logic And High Resolution Video Signals, U.S. Pat. No. 5,802,390 to Kashiwagi et al., entitled Data Bus Circuit And Method Of Charging Over Termination Resistor Of The Data Bus Circuit, U.S. Pat. No. 5,578,940 to Dillon et al., entitled Modular Bus With Signal Or Double Parallel Termination, U.S. Pat. No. 5,594,370 to Nguyen et al., entitled High Performance Backplane Driver Circuit, U.S. Pat. No. 5,528,167 to Samela et al., entitled Combination Of Terminator Apparatus Enhancements, U.S. Pat. No. 5,553,250 to Miyagawa et al., entitled Bus Terminating Circuit, U.S. Pat. No. 5,313,595 to Lewis et al., entitled Automatic Signal Termination System For A Computer Bus, U.S. Pat. No. 5,422,580 to Mandel et al., entitled Switchable Active Termination For SCSI Peripheral Devices, U.S. Pat. No. 5,399,926 to Adams et al., entitled Connected Processing Systems Including Mutual Power Off And Signal Path Disconnect Detection, and U.S. Pat. No. 5,239,559 to Brach et al., entitled Terminator Method And Apparatus.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a notebook computer for exactly transmitting signals between a controller and a floppy disk drive to stably operate the floppy disk drive.
Accordingly, to achieve the above object of the present invention, a notebook computer having a floppy disk drive for writing or reading information to or from a floppy disk according to predetermined control signals, comprises: a motherboard having a controller for generating control signals for controlling reading and writing data from and to the floppy disk drive, the controller being mounted on the motherboard; the floppy disk drive driving the floppy disk according to the control signals transmitted from the controller; and a connection unit for transmitting the control signals and power supply potentials from the controller to the floppy disk drive, the connection unit being physically and electrically disposed between the motherboard and the floppy disk drive; and the connection unit comprising a pull-up device disposed between terminals connected to the control signals and the power supply potentials.
The control signals connected to the pull-up device include at least one signal selected from the group consisting of a signal for turning on/off the floppy disk drive, a signal for selecting a kind of the floppy disk operating in the floppy disk drive, a signal for operating a motor of the floppy disk drive, a signal for selecting a floppy disk track, a signal for storing data in the floppy disk and a signal for selecting a side of a record medium of the floppy disk to be used with a read/write head.
REFERENCES:
patent: 5239559 (1993-08-01), Brach et al.
patent: 5313595 (1994-05-01), Lewis et al.
patent: 5399926 (1995-03-01), Adams et al.
patent: 5422580 (1995-06-01), Mandel et al.
patent: 5454080 (1995-09-01), Fasig et al.
patent: 5528167 (1996-06-01), Samela et al.
patent: 5553250 (1996-09-01), Miyagawa et al.
patent: 5578940 (1996-11-01), Dillon et al.
patent: 5594370 (1997-01-01), Nguyen et al.
patent: 5594873 (1997-01-01), Garrett
patent: 5650910 (1997-07-01), Winick et al.
patent: 5781028 (1998-07-01), Decuir
patent: 5781029 (1998-07-01), Baran
patent: 5802390 (1998-09-01), Kashiwagi et al.
patent: 5877634 (1999-03-01), Hunley
patent: 93-15880 (1993-07-01), None
Bushnell , Esq. Robert E.
Lee Thomas
Penveen Rehana
Samsung Electronics Co,. Ltd.
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