Advanced Technological Research

TOP > Advanced Technological Research: Research Themes

As professional software testing specialists, we at VALTES are bringing
our sense of mission and love of challenge to advanced technologies
that have yet to find market application.

ISDB-Tmm Test Streaming

With the end of analog broadcasting in sight, we at VALTES are aggressively conducting groundbreaking research and development in the creation of testing systems for newly launched "multimedia broadcasts." In addition to creating test cases from our research into the functionality and requisites emanating from ISDB-Tmm guidelines, we are also looking at creating test streams that take advantage of our accumulated experience in TS development. Because we are dealing with a lot of specifications that have yet to go into operation and, as such, present many unknown variables, our R&D efforts don't stop simply at proposals that demonstrate functional understanding, but are trained on offerings from both the TS and testing standpoints.

ISDB-Tmm Test Streaming

What is Multimedia Broadcasting?

Multimedia broadcasting refers to a host of conjoined, next-generation media services that maximize each particular medium's distinctive traits whether "broadcast" or "telecommunication" services. The following are some of the major services being realized through multimedia broadcasting. Note that internet connections, too, also further expand the possibilities.
streaming and filecasting

Research Results

Classifying the new challenges of the multimedia broadcast framework into "how receivers should look" and "what the shape of content delivery should be," we are creating test cases and test viewpoint lists extracted from each single or combined functionality. In conjunction with this, we are singling out differences with conventional ISDB-T and conducting research into transmission patterns that will enable us to create TS for either real-time or storage type broadcasting. We are also pushing ahead with development to enable creation of specialized and customized TS that address different maker specifications and test worthy functions.

Related Performance

At VALTES, we have a strong record of performance in TS for ISDB-T and ISDB-Tb receivers. We create and own specialized TS developed from our own vantage point outside of Dpa, and as a result, have been fielding many orders for receiver assessment. We retain and operate various TS creation and delivery equipment.
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Latin America ISDB-T Test Streams

Even when adopting the same ISDB-T format as in Japan, there can be considerable difference in the details when it comes to the ISDB-Tb method, such as in audio/visual or PSI/SI formatting. At VALTES, we are building on our practical experience in assessing receivers for Latin American markets to further drive our R&D efforts. Since local TS capture alone is not sufficient, we are taking advantage of strengths in TS creation to support tests that have grown inefficient.

Latin America ISDB-T Test Streams

Research Results

We create TS that conform to ABNT compliant visual formats and audio modes. We create test cases and TS to confirm time elapsed switching to different visual formats or viewer age restrictions. In addition to creating ABNT compliant data, we are expanding TS and test cases to respond to future needs such as TS creation for changes that occur in general event scheduling in Japan.

Related Performance

At VALTES, we have a strong record of performance in TS for ISDB-T and ISDB-Tb receivers. We create and own specialized TS developed from our own vantage point outside of Dpa, and as a result, have been fielding many orders for receiver assessment. We retain and operate various TS creation and delivery equipment.

HDMI-CEC linked operation verification

DLNA enables multiple devices to be linked together over networks, while HDMI-CEC controls multiple devices according to HDMI standards. Questions that emerge are: "How deep should verification go?" "What kind of test patterns are needed?" "Do we take into consideration effects of different devices or environments such weak or strong connectivity?" All of these questions represent research themes at VALTES and sticky assessment issues to be addressed and resolved going forward.

HDMI-CEC linked operation verification
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