1. A driver device to drive light emission elements arranged in a branch connection to a common terminal, comprising:
a scan-circuit portion including scan circuits that are connected to one another in a cascade manner and include output terminals connected to the light emission elements on a one-to-one basis, wherein a first-clock terminal, from which to output a first clock signal, is connected to odd-numbered scan circuits, and a second-clock terminal, from which to output a second clock signal, is connected to even-numbered scan circuits, and wherein the scan circuit portion is configured to scan and drive the light emission elements sequentially from a first scan circuit to a last scan circuit once the second-clock signal is applied to the first scan circuit;
a data-drive portion configured to drive the common terminal;
a clock-driver circuit including a first output terminal from which to output a first-clock pulse, a second output terminal from which to output a second-clock pulse that is different in phase from the first-clock pulse, and a third output terminal from which to output a third-clock pulse synchronized with the first-clock pulse and the second-clock pulse; and
a waveform-shaper circuit including a first resister connected between a node and a point between the first output terminal and the first-clock terminal, a second resistor connected between the node and a point between the second output terminal and the second-clock terminal, a capacitor connected between the third output terminal and the node, the waveform-shaper circuit configured to re-shape a waveform of the first clock signal to be outputted to the first-clock terminal and a waveform of the second clock signal to be outputted to the second-clock terminal.
2. The driver device according to claim 1, wherein in the scan-circuit portion,
each of the odd-numbered scan circuits includes a three-terminal switch element having a first terminal connected to a first power source, a second terminal connected to the first-clock terminal, and a control terminal connected to a corresponding one of the odd-numbered light emission elements and configured to control an ONOFF state between the first terminal and the second terminal in the odd-numbered scan circuit, and
each of the even-numbered scan circuits includes a three-terminal switch element having a first terminal connected to the first power source, a second terminal connected to the second-clock terminal, and a control terminal connected to a corresponding one of the even-numbered light emission elements and configured to control an ONOFF state between the first terminal and the second terminal in the even-numbered scan circuit.
3. The driver device according to claim 2, wherein
the control terminal of the three-terminal switch element in the first scan circuit is connected to the second-clock terminal via an opposite-direction diode, and
the control terminal of the three-terminal switch element of each scan circuit is connected respectively to the control terminal of the three-terminal switch element of a sequentially next scan circuit via a forward-direction diode.
4. The driver device according to claim 3, wherein the control terminal of the three-terminal switch element in each scan circuit is connected, via a resister, to a second power source with a potential different from a potential of the first power source.
5. The driver device according to claim 4, wherein
the first power source is configured to supply a source voltage,
the second power source is at a ground potential, and
the clock-driver circuit includes
a first three-state-type output buffer configured to output the first-clock pulse through the first output terminal,
a second three-state-type output buffer configured to output the second-clock pulse through the second output terminal, and
a third three-state-type output buffer configured to output the third-clock pulse through the third output terminal.
6. The driver device according to claim 2, wherein the three-terminal switch element includes a thyristor.
7. The driver device according to claim 1, wherein the light emission elements include three-terminal light emission elements.
8. The driver device according to claim 7 wherein the three-terminal light emission elements are light emission thyristors.
9. A print head comprising:
the light emission elements according to claim 1; and
the driver device according to claim 1.
10. An image formation apparatus comprising the print head according to claim 9 configured to emit light to form a letent image on an image carrier.
11. A driver device to drive main light emission portions each including light emission elements arranged in a branching connection to a common terminal, comprising:
scan-circuit portions each including scan circuits that are connected to one another in a cascade manner and include output terminals connected to the light emission elements on a one-to-one basis, wherein a first-clock terminal, from which to output a first clock signal, is connected to odd-numbered scan circuits in each scan portion, and a second-clock terminal, from which to output a second clock signal, connected to even-numbered scan circuits in each scan portion, wherein each scan-circuit portion is configured to scan and drive the light emission elements sequentially from a first scan circuit to a last scan circuit once the second-clock signal is applied to the first scan circuit; and
data-drive portions wherein each data-drive portion is configured to drive the common terminal of a corresponding scan-circuit portion;
a clock-driver circuit including first output terminals from which to output first-clock pulses, second output terminals from which to output second-clock pulses that are different in phase from the first-clock pulses, and a third output terminal from which to output a third-clock pulse synchronized with the first-clock pulses and the second-clock pulses; and
a waveform-shaper circuit including first resisters each connected between a corresponding node and a point between the corresponding first output terminal and the corresponding first-clock terminal, second resisters each connected between the corresponding node and a point between the corresponding second output terminal and the corresponding second-clock terminal, capacitors each connected between the corresponding third output terminal and the corresponding node, wherein the waveform-shaper circuit is configured to re-shape waveforms of the first clock signals to be outputted to the first-clock terminals and waveforms of the second clock signals to be outputted to the second-clock terminals.
12. The driver device according to claim 11, wherein in the scan-circuit portion,
each of the odd-numbered scan circuits includes a three-terminal switch element having a first terminal connected to a first power source, a second terminal connected to the first-clock terminal, and a control terminal connected to a corresponding one of the odd-numbered light emission elements and configured to control an ONOFF state between the first terminal and the second terminal in the odd-numbered scan circuit, and
each of the even-numbered scan circuits includes a three-terminal switch element having a first terminal connected to the first power source, a second terminal connected to the second-clock terminal, and a control terminal connected to a corresponding one of the even-numbered light emission elements and configured to control an ONOFF state between the first terminal and the second terminal in the even-numbered scan circuit.
13. The driver device according to claim 12, wherein
the control terminal of the three-terminal switch element in the first scan circuit is connected to the second-clock terminal via an opposite-direction diode, and
the control terminal of the three-terminal switch element of each scan circuit is connected to the control terminal of the three-terminal switch element of a sequentially next scan circuit via a forward-direction diode.
14. The driver device according to claim 13, wherein the control terminal of the three-terminal switch element in each scan circuit is connected, via a resister, to a second power source with a potential different from a potential of the first power source.
15. The driver device according to claim 14 wherein
the first power source is configured to supply a source voltage,
the second power source is at a ground potential, and
the clock-driver circuit includes
a first three-state-type output buffer configured to output the first-clock pulse through the first output terminal,
a second three-state-type output buffer configured to output the second-clock pulse through the second output terminal, and
a third three-state-type output buffer configured to output the third-clock pulse through the third output terminal.
16. The driver device according to claim 12, wherein the three-terminal switch element includes a thyristor.
17. The driver device according to claim 11, wherein the light emission elements include three-terminal light emission elements.
18. The driver device according to claim 17 wherein the three-terminal light emission elements are light emission thyristors.
19. A print head comprising:
the main light emission portions according to claim 11; and
the driver device according to claim 11.
20. An image formation apparatus comprising the print head according to claim 19 configured to emit light to form a letent image on an image carrier.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for implementing a graphic user interface for an electronic device, comprising the steps of:
a) rendering an image of a graphical user interface on a display screen, said graphical user interface comprising a first display for displaying an application and a second display for displaying a status bar, wherein said first display region and said second display region are displayed concurrently;
b) receiving input comprising information relating to an event, wherein said event is unrelated to said application in operation in said first display of said graphical user interface;
c) displaying an indication of said information in said status bar of said graphic user interface and also in response to said event displaying a graphical interface tool in said status bar that provides to a user a selection with respect to said event; and,
d) taking an action with respect to said event, wherein said action is responsive to said selection from said user, said selection comprising a command related to the disposition of said event;
wherein steps a)-d) are performed while said application is operating and without interfering with said other application.
2. A method as described in claim 1 wherein said portable electronic device is enabled as a portable telephone device.
3. A method as described in claim 1 wherein said event is an incoming telephone call.
4. A method as described in claim 1 wherein said information related to said event is caller identification information.
5. A method as described in claim 1 wherein said input from said user, comprising a command, is an instruction to answer an incoming telephone call.
6. A method as described in claim 1 wherein said input from said user, comprising a command, is an instruction to reject an incoming telephone call.
7. A method as described in claim 1 wherein said input from said user, comprising a command, is entered by selection of a graphic selection tool in said graphic user interface.
8. A method as described in claim 1 wherein said action responsive to said event is capable of execution without disturbing said application, wherein said application is displaying information on said portable computer system.
9. A method as described in claim 1 wherein said graphic user interface is implemented in a touch-screen display.
10. A method for implementing a graphic user interface for a portable telephone device, comprising the steps of:
a) rendering an image of a graphical user interface on a display screen, said graphical user interface comprising a first display region for displaying an application in operation and a second display region for displaying a status bar, wherein said first display region and said second display region are displayed concurrently;
b) receiving input comprising information relating to an incoming telephone call;
c) displaying an indication of said information in said status bar of said graphic user interface and also in response to said incoming telephone call displaying a graphical interface tool in said status bar that provides to a user a selection with respect to said call;
d) responsive to a selection from said user, said selection comprising a command related to the disposition of said incoming telephone call, taking an action with respect to said telephone call; and,
wherein steps a)-d) are performed while said application is operating and without interfering with said other application.
11. A method as described in claim 10 wherein said information related to said incoming telephone call is caller identification information.
12. A method as described in claim 10 wherein said input from said user, comprising a command, is an instruction to answer said incoming telephone call.
13. A method as described in claim 10 wherein said input from said user, comprising a command, is an instruction to reject said incoming telephone call.
14. A method as described in claim 10 wherein said input from said user, comprising a command, is entered by selection of a graphic selection tool in said graphic user interface.
15. A method as described in claim 10 wherein said action responsive to said incoming telephone call is capable of execution without disturbing said application, wherein said application is displaying information on said portable computer system.
16. A method as described in claim 10 wherein said graphic user interface is implemented in a touch-screen display.