Pioneer Corporation

Tsuyoshi Sakamoto

Shinichi Ishizuka

Hideo Ochi

Masami Tsuchida

Seiichi Hasebe

Katsunori Arakawa

Mineki Miyasaka

Ryuichiro Matsumoto

Tomoya Oishi

Jun Oosugi

Shota Satou

Provided is a display information generation apparatus that displays information in a manner so that it becomes possible to immediately and intuitively recognize the information, which is for guiding a mobile body. A navigation apparatus provided with a display that moves together with a vehicle is provided with a display data generation unit that acquires position information indicating the position of the vehicle, acquires, on the basis of the acquired position information, distance information indicating the distance from the position of the vehicle of facilities positioned along the road along which the vehicle is moving, and, on the basis of the acquired position information and distance information, displays an icon indicating the facilities at both sides of the road at the display arranged in order of the order of appearance accompanying the motion of the vehicle.

Display information generating apparatus, display information generating method, a program for display information generating, and information recording medium

A display panel driving device and driving method for providing high quality images without irregular luminance even after long-time use. The value of the light-emission drive current flowing when causing each light-emission elements bearing each pixel to independently emit light in succession is measured, then the luminance is corrected for each input pixel data based on the above light-emission drive current values, associated with the pixels corresponding to the input pixel data. According to another aspect, the voltage value of the drive voltage is adjusted in such a manner that one value among each measured light-emission drive current value becomes equal to a predetermined reference current value. According to a further aspect, the current value is measured while an off-set current component corresponding to a leak current of the display panel is added to the current outputted from the drive voltage generator circuit and the resultant current is supplied to each of the pixel portions.

Panel display driving device and driving method

A drive unit which can prevent the decrease of the luminance of a self-luminous device due to degradation or a change is electric characteristic thereof. The drive unit has a semiconductor device having an electric characteristic almost the same as the that of the self-luminous device, and drives the semiconductor device in accordance with the frequency of light emission of the self-luminous device. The device generates a characteristic change detection signal indicating the degree of a change in an electric characteristic of the semiconductor device, and supplies the self-luminous device with a drive signal having a current level or a voltage level based on the characteristic change detection signal.

Drive unit of self-luminous device with degradation detection function

An apparatus for driving a display panel having drive lines and capacitive light emitting elements. The apparatus sequentially selects one scanning line from the scanning lines every scanning period of input video data including a gradation level to specify a drive line corresponding to at least one capacitive light emitting element driven to emit light on the one scanning line in accordance with the input video data, generates a driving signal having a pulse width in accordance with the gradation level every scanning period, and applies the one capacitive light emitting element with a voltage equal to or higher than a light emission threshold voltage in a forward direction for a duration in which the driving signal is generated, through the one scanning line and the specified drive line, and applies the specified drive line with a predetermined potential in response to elimination of the driving signal to decrease the voltage applied to the one capacitive light emitting element in the forward direction to a voltage lower than the light emission threshold voltage.

Apparatus and method for driving display panel

A method for producing a fixed display panel using a matrix display panel. In the method, the holding state of memory elements of a plurality of pixels of the matrix display panel is changed to one of two values, in accordance with the predetermined fixed pattern, m driving lines are jointly connected as a first electrode and n scanning lines are jointly connected as a second electrode.

Fixed pattern display panel and method for producing fixed pattern display panel

A driving apparatus for a multi-color light-emitting display panel including drive lines and scanning lines intersecting with each other, and capacitive light-emitting elements which have polarities connected to the scanning lines and the drive lines at the intersections and which are divided into a plurality of types by a color of light emission, the capacitive light-emitting elements of the same type being arranged on each drive line. The drive apparatus comprises a scanning circuit for selectively supplying a first potential and a second potential higher than the first potential to each of the scanning lines, and a drive circuit for selectively supplying a drive current from a current source and a third potential for an offset voltage not higher than a light emission threshold voltage of the element to each of the drive lines, the drive current and the third potential are variable.

Apparatus and method for driving multi-color light emitting display panel

A display apparatus and a driving circuit of a display panel, in which even when an anode line driving circuit is made of a plurality of IC chips, light emission luminance values on the display panel can be uniformed. The display apparatus is made of a plurality of driving circuits having a plurality of light-emission drive current sources each for generating a light-emission drive current to allow a light emitting element of the display panel to emit the light and supplying the light-emission drive current to first electrode lines of the display panel. At least one of the driving circuits is provided with a drive current control circuit for adjusting a current amount of the light-emission drive current to be generated by the driving circuit on the basis of the light-emission drive current generated from the other driving circuit.

Display apparatus and driving circuit of display panel

A driving apparatus for a multi-color light-emitting display panel including drive lines and scanning lines intersecting with each other, and capacitive light-emitting elements which have polarities connected to the scanning lines and the drive lines at the intersections and which are divided into a plurality of types by a color of light emission, the capacitive light-emitting elements of the same type being arranged on each drive line. The drive apparatus comprises a scanning circuit for selectively supplying a first potential and a second potential higher than the first potential to each of the scanning lines, and a drive circuit for selectively supplying a drive current from a current source and a third a potential for an offset voltage not higher than a light emission threshold voltage of the element to each of the drive lines, the drive current and the third potential are variable.

In a luminous display method according to a simple matrix drive system and its driving method in which luminous elements are connected at the intersections of a plurality of anode lines and a plurality of cathode lines which are arranged in matrix form, the cathode lines or the anode lines are employed as scanning lines, while the others are employed as drive lines, and while the scanning lines are scanned with a predetermined period, in synchronization with the scanning operation drive sources are connected to desired drive lines thereby to cause luminous elements to emit lights which are connected at the intersections of the scanning lines and the drive lines; in which, during a period of time before, after the scanning of an optional scanning line is accomplished, the scanning is switched over to the scanning of the next scanning line, an offset voltage is applied to charge the luminous elements.

Growing community of inventors

Tsurugashima, Japan

Tsuyoshi Sakamoto